----

| Delaware                                       |   | 75-2220097               |
|------------------------------------------------|--------|--------------------------|
| (State      or other jurisdiction              |   | (I.R.S.      Employer    |
| of      incorporation or organization)         |   | Identification      No.) |
|                                           |   |                     |
| 6 Desta Drive, Suite 6500, Midland,      Texas |   | 79705                    |
| (Address      of principal executive office)   |   | (Zip      Code)          |

| Indicate      by check mark if the registrant is a well-known seasoned issuer, as      defined in Rule 405 of the Securities Act.                                                                                                                                                                                                                                                 | ¨    Yes | x  No      |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|------------|
|                                                                                                                                                                                                                                                                                                                                                                              |          |       |
| Indicate      by check mark if the registrant is not required to file reports pursuant      to Section 13 or Section 15(d) of the Act.                                                                                                                                                                                                                                            | ¨    Yes | x  No      |
|                                                                                                                                                                                                                                                                                                                                                                              |          |       |
| Indicate      by check mark whether the registrant (1) has filed all reports required to      be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934      during the preceding 12 months (or for such shorter period that the      registrant was required to file such reports), and (2) has been subject to      such filing requirements for the past 90 days. | x    Yes      | ¨  No |

| Indicate      by check mark if disclosure of delinquent filers pursuant to Item 405 of      Regulation S-K is not contained herein, and will not be contained, to the      best of registrant's knowledge, in definitive proxy or information      statements incorporated by reference in Part III of this Form 10-K or any      amendment to this Form 10-K.x |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Indicate      by check mark whether the registrant is a large accelerated filer, an      accelerated filer, or a non-accelerated filer.  See definition      of “accelerated filer and large accelerated filer” in Rule 12b-2 of the      Exchange Act. |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Large      accelerated filer ¨                                                                                                                                                                                                                                           |   | Accelerated      filer ¨ |   | Non-accelerated      filer  x |   | Smaller      reporting company¨ |   |

| Indicate      by check mark whether the registrant is a shell company (as defined in      Rule 12b-2 of the Act). | ¨    Yes | x  No |
|-------------------------------------------------------------------------------------------------------------------|---------------|-------|

----

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Page   |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|
| Part I                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      1.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Business                                                                                                                                                     | 3      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      1A.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Risk      Factors                                                                                                                                            | 7      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      1B.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Unresolved Staff      Comments                                                                                                                               | 8      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      2.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Properties                                                                                                                                                   | 9      |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      3.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Legal      Proceedings                                                                                                                                       | 10     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      4.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Submission of Matters to a Vote of Security      Holders                                                                                                     | 10     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Part II                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      5.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Market for Registrant's Common Equity,      Related                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Stockholder      Matters and Issuer Purchases of Equity Securities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | 11     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      6.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Selected Financial      Data                                                                                                                                 | 12     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      7.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Management's Discussion and Analysis of                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Financial      Condition and Results of      Operations                                                                                                                          | 13     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      7A.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Quantitative and Qualitative Disclosures About Market      Risk                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 15     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      8.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Financial Statements and Supplementary      Data                                                                                                             | 16     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      9.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Changes in and Disagreements with      Accountants                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | on Accounting      and Financial      Disclosure                                                                                                                                 | 29     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      9A.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Controls and      Procedures                                                                                                                                 | 29     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      9B.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Other      Information                                                                                                                                       | 30     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Part III                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      10.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Directors, Executive Officers and Corporate      Governance                                                                                                  | 31     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      11.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Executive      Compensation                                                                                                                                  | 31     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      12.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Security Ownership of Certain Beneficial Owners and      Management and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Related      Stockholder      Matters                                                                                                                                            | 32     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      13.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Certain Relationships and Related Transactions, and      Director Independence                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 32     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      14.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Principal Accounting Fees and      Services                                                                                                                  | 32     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Part IV                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Item      15.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Exhibits and Financial Statement      Schedules                                                                                                              | 33     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Glossary of Oil and Gas      Terms                                                                                                                   | 34                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |   |
| Signatures                                                                                                                                           | 36                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |

----

Part

Item

----

----

----

----

Item1A

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tem

----

tem

|                                    |   | Proved      Developed |    |   | Proved       |   |   | Total       |   |
|-----------------------------------------|--------|-----------------------|---------|--------|--------------|--------|--------|-------------|--------|
|                                    |   | Producing             |    |   | Nonproducing |   |   | Undeveloped |   |   | Proved |   |
| Oil      (Bbls)                         |   |                  | 635,000 |   |         |   | -      |        |   |   | 3,000 |   |   |   | 638,000 |   |
| Gas      (Mcf)                          |   |                  | 397,000 |   |         |   | -      |        |   |   | 3,000 |   |   |   | 400,000 |   |
| Total      (BOE)                        |   |                  | 701,000 |   |         |   | -      |        |   |   | 4,000 |   |   |   | 705,000 |   |
|                                    |   |                  |    |   |         |   |   |        |   |   |   |   |   |   |   |   |
| Standardized      measure of discounted |   |                  |    |   |         |   |   |        |   |   |   |   |   |   |   |   |
| future net cash      flows              |   |                  |    |   |         |   |   |        |   |   |   |   |   | $ | 17,159,000 |   |

|     |   | Proved      Reserves |    |   |   |   |
|----------|--------|----------------------|---------|--------|--------|--------|
|     |   |                 |    |   |   |   |   | Total      Oil |   |   | Percent      of |   |
|     |   | Oil                  |    |   | Gas    |   |   | Equivalent |   |   | Total      Oil |   |
|     |   | (Bbls)               |    |   | (Mcf)  |   |   | (BOE) |   |   | Equivalent |   |
| Block D  |   |                 | 324,000 |   |   |   | - |   |   |   | 324,000 |   |   |   | 46.0 | % |
| Hendrick |   |                 | 97,000  |   |   |   | 25,000 |   |   |   | 101,000 |   |   |   | 14.3 | % |
| Collie   |   |                 | 75,000  |   |   |   | 114,000 |   |   |   | 94,000 |   |   |   | 13.3 | % |
| Scott    |   |                 | 70,000  |   |   |   | 142,000 |   |   |   | 94,000 |   |   |   | 13.3 | % |
| Other    |   |                 | 72,000  |   |   |   | 119,000 |   |   |   | 92,000 |   |   |   | 13.1 | % |
| Total    |   |                 | 638,000 |   |   |   | 400,000 |   |   |   | 705,000 |   |   |   | 100.0 | % |

----

Item3

Item

----

Part II

Item

|                |   | Total      Number |   |   |               |   |
|---------------------|--------|-------------------|--------|--------|--------------------|--------|
|                |   | of      Units     |   |   | Average      Price |   |
| Period              |   | Purchased         |   |   | Paid      Per Unit |   |
| January      2007   |   |              | -      |   |               | $      | - |   |
| February      2007  |   |              | -      |   |               |   | - |   |
| March      2007     |   |              | -      |   |               |   | - |   |
| April      2007     |   |              | 179    |   |               |   | 350.42 |   |
| May      2007       |   |              | -      |   |               |   | - |   |
| June      2007      |   |              | -      |   |               |   | - |   |
| July      2007      |   |              | 12     |   |               |   | 330.29 |   |
| August      2007    |   |              | -      |   |               |   | - |   |
| September      2007 |   |              | -      |   |               |   | - |   |
| October      2007   |   |              | -      |   |               |   | - |   |
| November      2007  |   |              | -      |   |               |   | - |   |
| December      2007  |   |              | 20     |   |               |   | 314.75 |   |
| TOTALS              |   |              | 211    |   |               | $      | 345.89 |   |

----

te

|                                       |   | Years      ended December 31, |      |
|--------------------------------------------|--------|-------------------------------|-----------|
|                                       |   | 2007                          |      |   | 2006 |   |   | 2005 |   |   | 2004 |   |   | 2003 |   |
| Revenues                                   |   | $                             | 2,963,475 |   |   | $ | 2,761,552 |   |   | $ | 2,355,901 |   |   | $ | 1,832,578 |   |   | $ | 1,420,356 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Income      from continuing operations     |   |                          | 1,707,720 |   |   |   | 1,605,829 |   |   |   | 1,411,417 |   |   |   | 984,197 |   |   |   | 541,818 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Results      from discontinued operations  |   |                          | -         |   |   |   | - |   |   |   | - |   |   |   | - |   |   |   | 19,951 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Income      before cumulative effect       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| of accounting      change                  |   |                          | 1,707,720 |   |   |   | 1,605,829 |   |   |   | 1,411,417 |   |   |   | 984,197 |   |   |   | 561,769 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net      income                            |   |                          | 1,707,720 |   |   |   | 1,605,829 |   |   |   | 1,411,417 |   |   |   | 984,197 |   |   |   | 402,850 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Partners'      share of net income :       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| General      partner                       |   |                          | 173,545   |   |   |   | 162,196 |   |   |   | 142,295 |   |   |   | 99,580 |   |   |   | 41,985 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Limited      partners                      |   |                          | 1,534,175 |   |   |   | 1,443,633 |   |   |   | 1,269,122 |   |   |   | 884,617 |   |   |   | 360,865 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Limited      partners' income per          |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| unit before discontinued      operations   |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| and cumulative effect of      accounting   |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| change                                     |   |                          | 112.84    |   |   |   | 106.18 |   |   |   | 93.35 |   |   |   | 65.06 |   |   |   | 35.74 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Discontinued      operations per           |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| limited partner      unit                  |   |                          | -         |   |   |   | - |   |   |   | - |   |   |   | - |   |   |   | 1.32 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Limited      partners' net income per unit |   |                          | 112.84    |   |   |   | 106.18 |   |   |   | 93.35 |   |   |   | 65.06 |   |   |   | 26.54 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Limited      partners' cash                |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| distributions per      unit                |   |                          | 109.22    |   |   |   | 114.19 |   |   |   | 89.33 |   |   |   | 56.27 |   |   |   | 43.52 |   |
|                                       |   |                          |      |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      assets                          |   | $                             | 1,069,131 |   |   | $ | 897,695 |   |   | $ | 816,173 |   |   | $ | 674,805 |   |   | $ | 524,180 |   |

----

Item7

----

|                                           |   | Year      Ended December 31, |      |
|------------------------------------------------|--------|------------------------------|-----------|
|                                           |   | 2007                         |      |   | 2006 |   |   | 2005 |   |
| Oil      production in barrels                 |   |                         | 37,663    |   |   |   | 37,825 |   |   |   | 39,319 |   |
| Gas      production in mcf                     |   |                         | 42,507    |   |   |   | 42,071 |   |   |   | 41,636 |   |
| Total      (BOE)                               |   |                         | 44,748    |   |   |   | 44,837 |   |   |   | 46,258 |   |
| Average      price per barrel of oil           |   | $                            | 69.48     |   |   | $ | 61.52 |   |   | $ | 52.01 |   |
| Average      price per mcf of gas              |   | $                            | 8.03      |   |   | $ | 7.27 |   |   | $ | 7.37 |   |
| Partnership      distributions                 |   | $                            | 1,650,000 |   |   | $ | 1,725,000 |   |   | $ | 1,349,470 |   |
| Limited      partner distributions             |   | $                            | 1,485,000 |   |   | $ | 1,552,500 |   |   | $ | 1,214,523 |   |
| Per      unit distribution to limited partners |   | $                            | 109.22    |   |   | $ | 114.19 |   |   | $ | 89.33 |   |
| Number      of limited partner units           |   |                         | 13,596    |   |   |   | 13,596 |   |   |   | 13,596 |   |

----

Item7A

----

Item8

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   | Page   |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|
| Report of Independent Registered Public Accounting      Firm                                                                                                    |   | 17     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |   |
| Balance      Sheets                                                                                                                                             |   | 18     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |   |
| Statements of      Operations                                                                                                                                   |   | 19     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |   |
| Statements of Changes in Partners'      Equity                                                                                                                  |   | 20     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |   |
| Statements of Cash      Flows                                                                                                                                   |   | 21     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |   |   |
| Notes to Financial      Statements                                                                                                                              |   | 22     |

----

INDEP

----

Oil &

|                                          |   | December      31, |      |
|-----------------------------------------------|--------|-------------------|-----------|
|                                          |   | 2007              |      |   | 2006 |   |
| Assets                                        |   |              |      |   |   |   |
| Current      assets:                          |   |              |      |   |   |   |
| Cash and cash      equivalents                |   | $                 | 112,867   |   |   | $ | 85,760 |   |
| Receivable from Managing General      Partner |   |              | 345,275   |   |   |   | 303,696 |   |
| Total current      assets                     |   |              | 458,142   |   |   |   | 389,456 |   |
|                                          |   |              |      |   |   |   |   |   |
| Oil      and gas properties - using the full- |   |              |      |   |   |   |   |   |
| cost method of      accounting                |   |              | 5,733,195 |   |   |   | 5,602,719 |   |
| Less accumulated      depreciation,           |   |              |      |   |   |   |   |   |
| depletion and      amortization               |   |              | 5,122,206 |   |   |   | 5,094,480 |   |
|                                          |   |              |      |   |   |   |   |   |
| Net oil and gas      properties               |   |              | 610,989   |   |   |   | 508,239 |   |
|                                          |   | $                 | 1,069,131 |   |   | $ | 897,695 |   |
|                                          |   |              |      |   |   |   |   |   |
| Liabilities and Partners'      Equity         |   |              |      |   |   |   |   |   |
|                                          |   |              |      |   |   |   |   |   |
| Asset      retirement obligation              |   | $                 | 664,205   |   |   | $ | 550,489 |   |
|                                          |   |              |      |   |   |   |   |   |
| Partners'      equity:                        |   |              |      |   |   |   |   |   |
| General partner                               |   |              | 19,564    |   |   |   | 11,019 |   |
| Limited partners                              |   |              | 385,362   |   |   |   | 336,187 |   |
|                                          |   |              |      |   |   |   |   |   |
| Total partners'      equity                   |   |              | 404,926   |   |   |   | 347,206 |   |
|                                          |   |              |      |   |   |   |   |   |
|                                          |   | $                 | 1,069,131 |   |   | $ | 897,695 |   |

----

 & Gas 

|                                          |   | Years      ended December 31, |      |
|-----------------------------------------------|--------|-------------------------------|-----------|
|                                          |   | 2007                          |      |   | 2006 |   |   | 2005 |   |
| Revenues                                      |   |                          |      |   |   |   |   |   |   |
| Oil and gas    revenue                        |   | $                             | 2,958,115 |   |   | $ | 2,632,857 |   |   | $ | 2,351,713 |   |
| Interest income                               |   |                          | 5,360     |   |   |   | 7,331 |   |   |   | 4,188 |   |
| Other                                         |   |                          | -         |   |   |   | 121,364 |   |   |   | - |   |
|                                          |   |                          | 2,963,475 |   |   |   | 2,761,552 |   |   |   | 2,355,901 |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |
| Expenses                                      |   |                          |      |   |   |   |   |   |   |   |   |   |
| Production                                    |   |                          | 1,049,891 |   |   |   | 989,235 |   |   |   | 804,553 |   |
| Depreciation, depletion and      amortization |   |                          | 27,726    |   |   |   | 16,133 |   |   |   | 11,531 |   |
| Accretionexpense                              |   |                          | 55,111    |   |   |   | 30,032 |   |   |   | 17,394 |   |
| General and      administrative               |   |                          | 123,027   |   |   |   | 120,323 |   |   |   | 111,006 |   |
|                                          |   |                          | 1,255,755 |   |   |   | 1,155,723 |   |   |   | 944,484 |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |
| Net      income                               |   | $                             | 1,707,720 |   |   | $ | 1,605,829 |   |   | $ | 1,411,417 |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |
| Net      income allocated to:                 |   |                          |      |   |   |   |   |   |   |   |   |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |
| Managing General      Partner                 |   | $                             | 173,545   |   |   | $ | 162,196 |   |   | $ | 142,295 |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |
| Limited    partners                           |   | $                             | 1,534,175 |   |   | $ | 1,443,633 |   |   | $ | 1,269,122 |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |
| Per limited partner      unit                 |   | $                             | 112.84    |   |   | $ | 106.18 |   |   | $ | 93.35 |   |
|                                          |   |                          |      |   |   |   |   |   |   |   |   |   |

----

 Gas Income 

|                              |   | General |     |   | Limited  |   |       |   |   |
|-----------------------------------|--------|---------|----------|--------|----------|--------|------------|--------|--------|
|                              |   | Partner |     |   | Partners |   |       | Total  |   |
| Balance      at December 31, 2004 |   | $       | 13,975   |   |     | $      | 390,455    |   |   | $ | 404,430 |   |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Net      income                   |   |    | 142,295  |   |     |   | 1,269,122  |   |   |   | 1,411,417 |   |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Distributions                     |   |    | (134,947 | )      |     |   | (1,214,523 | )      |   |   | (1,349,470 | ) |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Balance      at December 31, 2005 |   |    | 21,323   |   |     |   | 445,054    |   |   |   | 466,377 |   |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Net      income                   |   |    | 162,196  |   |     |   | 1,443,633  |   |   |   | 1,605,829 |   |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Distributions                     |   |    | (172,500 | )      |     |   | (1,552,500 | )      |   |   | (1,725,000 | ) |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Balance      at December 31, 2006 |   |    | 11,019   |   |     |   | 336,187    |   |   |   | 347,206 |   |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Net      income                   |   |    | 173,545  |   |     |   | 1,534,175  |   |   |   | 1,707,720 |   |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Distributions                     |   |    | (165,000 | )      |     |   | (1,485,000 | )      |   |   | (1,650,000 | ) |
|                              |   |    |     |   |     |   |       |   |   |   |   |   |
| Balance      at December 31, 2007 |   | $       | 19,564   |   |     | $      | 385,362    |   |   | $ | 404,926 |   |

----

 Gas Income 

|                                                       |   | Years      ended December 31, |       |
|------------------------------------------------------------|--------|-------------------------------|------------|
|                                                       |   | 2007                          |       |   | 2006 |   |   | 2005 |   |
| Cash      flows from operating activities:                 |   |                          |       |   |   |   |   |   |   |
| Cash received from oil and gas      sales                  |   | $                             | 2,795,172  |   |   | $ | 2,666,701 |   |   | $ | 2,369,318 |   |
| Cash paid for production      expense, administrative      |   |                          |       |   |   |   |   |   |   |   |   |   |
| fees and general and      administrative overhead          |   |                          | (1,172,980 | ) |   |   | (1,113,684 | ) |   |   | (915,559 | ) |
| Interestreceived                                           |   |                          | 5,360      |   |   |   | 7,331 |   |   |   | 4,188 |   |
| Miscellaneous      settlement                              |   |                          | 121,364    |   |   |   | - |   |   |   | - |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Net cash provided by operating      activities             |   |                          | 1,748,916  |   |   |   | 1,560,348 |   |   |   | 1,457,947 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Cash      flows from investing activities:                 |   |                          |       |   |   |   |   |   |   |   |   |   |
| Additions to oil and gas      properties                   |   |                          | (71,809    | ) |   |   | (6,505 | ) |   |   | - |   |
| Sale ofequipment                                           |   |                          | -          |   |   |   | - |   |   |   | 6,800 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Net cash (used in) provided by      investing activities   |   |                          | (71,809    | ) |   |   | (6,505 | ) |   |   | 6,800 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Cash      flows from financing activities:                 |   |                          |       |   |   |   |   |   |   |   |   |   |
| Distributions to      partners                             |   |                          | (1,650,000 | ) |   |   | (1,725,000 | ) |   |   | (1,349,470 | ) |
| Decrease in distributions      payable                     |   |                          | -          |   |   |   | (119 | ) |   |   | (1,186 | ) |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Net cash used in financing      activities                 |   |                          | (1,650,000 | ) |   |   | (1,725,119 | ) |   |   | (1,350,656 | ) |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Net      increase (decrease) in cash and cash equivalents  |   |                          | 27,107     |   |   |   | (171,276 | ) |   |   | 114,091 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Beginning ofyear                                           |   |                          | 85,760     |   |   |   | 257,036 |   |   |   | 142,945 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| End of year                                                |   | $                             | 112,867    |   |   | $ | 85,760 |   |   | $ | 257,036 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Reconciliation      of net income to net                   |   |                          |       |   |   |   |   |   |   |   |   |   |
| cash provided by operating      activities:                |   |                          |       |   |   |   |   |   |   |   |   |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Net      income                                            |   | $                             | 1,707,720  |   |   | $ | 1,605,829 |   |   | $ | 1,411,417 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Adjustments      to reconcile net income to                |   |                          |       |   |   |   |   |   |   |   |   |   |
| net cash provided by operating      activities:            |   |                          |       |   |   |   |   |   |   |   |   |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Depreciation, depletion and      amortization              |   |                          | 27,726     |   |   |   | 16,133 |   |   |   | 11,531 |   |
| Accretionexpense                                           |   |                          | 55,111     |   |   |   | 30,032 |   |   |   | 17,394 |   |
| Settlement of asset retirement      obligations            |   |                          |       |   |   |   |   |   |   |   |   |   |
| for plugged and abandoned      wells                       |   |                          | (62        | ) |   |   | (4,126 | ) |   |   | - |   |
| (Increase) decrease in      receivables                    |   |                          | (41,579    | ) |   |   | (87,520 | ) |   |   | 17,605 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Net      cash provided by operating activities             |   | $                             | 1,748,916  |   |   | $ | 1,560,348 |   |   | $ | 1,457,947 |   |
|                                                       |   |                          |       |   |   |   |   |   |   |   |   |   |
| Noncash      investing and financing activities:           |   |                          |       |   |   |   |   |   |   |   |   |   |
| Increase (decrease) in oil and      gas properties – |   |                          |       |   |   |   |   |   |   |   |   |   |
| SFAS No. 143                                               |   | $                             | 58,667     |   |   | $ | 174,906 |   |   | $ | (63,213 | ) |

----

Southwest Oil & 

| 1. | Organization |
|----|--------------|

|                                          | Limited  |   | General  |
|-----------------------------------------------|----------|--------|----------|
|                                          | Partners |   | Partners |
| Interest      income on capital contributions | 100%     |   | -        |
| Oil      and gas sales                        | 90%      |   | 10%      |
| All      other revenues                       | 90%      |   | 10%      |
| Organization      and offering costs (1)      | 100%     |   | -        |
| Amortization      of organization costs       | 100%     |   | -        |
| Syndication      costs                        | 100%     |   | -        |
| Property      acquisition costs               | 100%     |   | -        |
| Gain/loss      on property disposition        | 90%      |   | 10%      |
| Operating      and administrative costs (2)   | 90%      |   | 10%      |
| Depreciation,      depletion and amortization |     |   |     |
|  of      oil and gas properties          | 100%     |   | -        |
| All      other costs                          | 90%      |   | 10%      |

|   | (1) | All      organization costs in excess of 3% of initial capital contributions will      be paid by the Managing General Partner and will be treated as a capital      contribution.  The Partnership paid the Managing General Partner      an amount equal to 3% of initial capital contributions for such      organization costs. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (2) | Administrative      costs in any year, which exceed 2% of capital contributions shall be paid      by the Managing General Partner and will be treated as a capital      contribution. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 2. | Summary of Significant      Accounting Policies |
|----|-------------------------------------------------|

----

| 2. | Summary of Significant      Accounting Policies -continued |
|----|------------------------------------------------------------|

----

| 2. | Summary of Significant      Accounting Policies -continued |
|----|------------------------------------------------------------|

|                                                             |   | 2007   |    |   | 2006   |   |
|------------------------------------------------------------------|--------|--------|---------|--------|--------|--------|
| Beginning      of year                                           |   | $      | 550,489 |   |   | $      | 349,677 |   |
| Additional      abandonment obligations from new wells           |   |   | 58,667  |   |   |   | - |   |
| Reduction      of obligations due to wells plugged and abandoned |   |   | (62     | )      |   |   | (4,126 | ) |
| Accretion      expense                                           |   |   | 55,111  |   |   |   | 30,032 |   |
| Revisions      of previous estimates                             |   |   | -       |   |   |   | 174,906 |   |
| End      of year                                                 |   | $      | 664,205 |   |   | $      | 550,489 |   |

----

| 4. | Commitments and      Contingent Liabilities |
|----|---------------------------------------------|

| 5. | Related Party      Transactions |
|----|---------------------------------|

----

| 6. | Oil and Gas Reserves      Information (unaudited) |
|----|---------------------------------------------------|

|                                       |   | Oil      (bbls) |    |   | Gas      (mcf) |   |
|--------------------------------------------|--------|-----------------|---------|--------|----------------|--------|
| Total      Proved -                        |   |            |    |   |           |   |
|                                       |   |            |    |   |           |   |
| January      1, 2005                       |   |            | 512,000 |   |           |   | 420,000 |   |
|                                       |   |            |    |   |           |   |   |   |
| Revisions of previous      estimates       |   |            | 96,000  |   |           |   | 50,000 |   |
| Production from continuing      operations |   |            | (39,000 | )      |           |   | (42,000 | ) |
|                                       |   |            |    |   |           |   |   |   |
| December      31, 2005                     |   |            | 569,000 |   |           |   | 428,000 |   |
|                                       |   |            |    |   |           |   |   |   |
| Revisions of previous      estimates       |   |            | (52,000 | )      |           |   | (15,000 | ) |
| Production from continuing      operations |   |            | (38,000 | )      |           |   | (42,000 | ) |
|                                       |   |            |    |   |           |   |   |   |
| December      31, 2006                     |   |            | 479,000 |   |           |   | 371,000 |   |
|                                       |   |            |    |   |           |   |   |   |
| Revisions of previous      estimates       |   |            | 197,000 |   |           |   | 73,000 |   |
| Production from continuing      operations |   |            | (38,000 | )      |           |   | (43,000 | ) |
|                                       |   |            |    |   |           |   |   |   |
| December      31, 2007                     |   |            | 638,000 |   |           |   | 401,000 |   |
|                                       |   |            |    |   |           |   |   |   |
| Proved developed reserves      -           |   |            |    |   |           |   |   |   |
|                                       |   |            |    |   |           |   |   |   |
| December      31, 2005                     |   |            | 566,000 |   |           |   | 425,000 |   |
| December      31, 2006                     |   |            | 476,000 |   |           |   | 367,000 |   |
| December      31, 2007                     |   |            | 635,000 |   |           |   | 398,000 |   |

----

| 6. | Oil and Gas Reserves      Information (unaudited) -continued |
|----|--------------------------------------------------------------|

|                                               |   | 2007   |       |   | 2006   |   |       | 2005   |   |
|----------------------------------------------------|--------|--------|------------|--------|--------|--------|------------|--------|--------|
| Future      cash inflows                           |   | $      | 61,757,000 |   |   | $      | 28,970,000 |   |   | $ | 37,202,000 |   |
| Production,      development and abandonment costs |   |   | 25,096,000 |   |   |   | 14,748,000 |   |   |   | 16,002,000 |   |
| Future      net cash flows                         |   |   | 36,661,000 |   |   |   | 14,222,000 |   |   |   | 21,200,000 |   |
| 10%      annual discount for estimated             |   |   |       |   |   |   |       |   |   |   |   |   |
| timing of cash      flows                          |   |   | 19,502,000 |   |   |   | 6,642,000  |   |   |   | 11,024,000 |   |
| Standardized      measure of discounted            |   |   |       |   |   |   |       |   |   |   |   |   |
| future net cash      flows                         |   | $      | 17,159,000 |   |   | $      | 7,580,000  |   |   | $ | 10,176,000 |   |

|                                                        |   | 2007   |       |   | 2006   |   |       | 2005   |   |
|-------------------------------------------------------------|--------|--------|------------|--------|--------|--------|------------|--------|--------|
| Sales      of oil and gas produced, net of production costs |   | $      | (1,908,000 | )      |   | $      | (1,644,000 | )      |   | $ | (1,547,000 | ) |
| Changes      in prices and production costs                 |   |   | 6,361,000  |   |   |   | (2,056,000 | )      |   |   | 3,908,000 |   |
| Changes      of production rates (timing) and others        |   |   | (724,000   | )      |   |   | 850,000    |   |   |   | (433,000 | ) |
| Revisions      of previous quantities estimates             |   |   | 5,092,000  |   |   |   | (764,000   | )      |   |   | 1,658,000 |   |
| Accretion      of discount                                  |   |   | 758,000    |   |   |   | 1,018,000  |   |   |   | 599,000 |   |
| Discounted      future net cash flows -                     |   |   |       |   |   |   |       |   |   |   |   |   |
| Beginning      of year                                      |   |   | 7,580,000  |   |   |   | 10,176,000 |   |   |   | 5,991,000 |   |
| End      of year                                            |   | $      | 17,159,000 |   |   | $      | 7,580,000  |   |   | $ | 10,176,000 |   |

----

| 7. | Selected Quarterly      Financial Results –(unaudited) |
|----|--------------------------------------------------------------|

|                                      |   | Quarter |    |
|-------------------------------------------|--------|---------|---------|
|                                      |   | First   |    |   | Second |   |   | Third |   |   | Fourth |   |
| 2007:                                     |   |    |    |   |   |   |   |   |   |   |   |   |
| Total revenues                            |   | $       | 522,103 |   |   | $ | 697,057 |   |   | $ | 758,027 |   |   | $ | 986,288 |   |
| Total expenses                            |   |    | 221,496 |   |   |   | 306,282 |   |   |   | 318,551 |   |   |   | 409,426 |   |
| Net income                                |   | $       | 300,607 |   |   | $ | 390,775 |   |   | $ | 439,476 |   |   | $ | 576,862 |   |
|                                      |   |    |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net income per limited partners      unit |   | $       | 19.85   |   |   | $ | 25.82 |   |   | $ | 29.04 |   |   | $ | 38.13 |   |

|                                      |   | Quarter |    |
|-------------------------------------------|--------|---------|---------|
|                                      |   | First   |    |   | Second |   |   | Third |   |   | Fourth |   |
| 2006:                                     |   |    |    |   |   |   |   |   |   |   |   |   |
| Total revenues                            |   | $       | 647,905 |   |   | $ | 731,911 |   |   | $ | 703,929 |   |   | $ | 677,807 |   |
| Total expenses                            |   |    | 202,790 |   |   |   | 310,423 |   |   |   | 299,022 |   |   |   | 343,488 |   |
| Net income                                |   | $       | 445,115 |   |   | $ | 421,488 |   |   | $ | 404,907 |   |   | $ | 334,319 |   |
|                                      |   |    |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net income per limited partners      unit |   | $       | 29.44   |   |   | $ | 27.88 |   |   | $ | 26.78 |   |   | $ | 22.08 |   |

----

Item9

Item9A

----

Item9B

----

Part III

Item10

Item11

----

tem

Item

Item14

| For      the Year Ended December 31, |   | 2007   |   | 2006   |
|--------------------------------------|--------|--------|--------|--------|
|                                 |   |   |   |   |
| Audit      Fees                      | $      | 16,932 | $      | 15,084 |
| Audit      Related Fees              |   | -      |   | -      |
| Tax      Fees                        |   | -      |   | -      |
| All      Other Fees                  |   | -      |   | -      |
|                                 |   |   |   |   |
| TOTAL                                | $      | 16,932 | $      | 15,084 |

----

Part IV

Item15

| (a)    | (1)    | Financial      Statements:                                                                                                                                                                                          |
|--------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   |                                                                                                                                                                                                                |
|   |   | Included in Part II of this      report                                                                                                                                                                             |
|   |   |                                                                                                                                                                                                                |
|   |   | Report of Independent Registered      Public Accounting Firm                                                                                                                                                        |
|   |   | Balance Sheets                                                                                                                                                                                                      |
|   |   | Statements of      Operations                                                                                                                                                                                       |
|   |   | Statements of Changes in      Partners' Equity                                                                                                                                                                      |
|   |   | Statements of Cash      Flows                                                                                                                                                                                       |
|   |   | Notes to Financial      Statements                                                                                                                                                                                  |
|   |   |                                                                                                                                                                                                                |
|   | (2)    | Schedules      required by Article 12 of Regulation S-X are either omitted because they      are not applicable or because the required information is shown in the      financial statements or the notes thereto. |
|   |   |                                                                                                                                                                                                                |
|   | (3)    | Exhibits:                                                                                                                                                                                                           |

| 4      | (a)    | Certificate      of Limited Partnership of Southwest Oil & Gas Income Fund VIII-A,      L.P., dated November 30, 1987. (Incorporated by reference from      Partnership's S-1 Registration Statement File Number 33-18847 effective      March 31, 1988.) |
|--------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   |                                                                                                                                                                                                                                                          |
|   | (b)    | Agreement      of Limited Partnership of Southwest Oil & Gas Income Fund VIII-A, L.P.      dated July 6, 1988.  (Incorporated by reference from      Partnership's Form 10-K for the fiscal year ended December 31,      1988.)                 |
|   |   |                                                                                                                                                                                                                                                          |
|   |   |                                                                                                                                                                                                                                                          |
|   | 31.1   | Rule      13a-14(a)/15d-14(a) Certification                                                                                                                                                                                                                   |
|   | 31.2   | Rule      13a-14(a)/15d-14(a) Certification                                                                                                                                                                                                                   |
|   | 32.1   | Certification      of Chief Executive Officer and Chief Financial Officer Pursuant to 18      U.S.C. Section 1350, as adopted Pursuant to Section 906 of the      Sarbanes-Oxley Act of 2002                                                                  |

----

Glossary of

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|   | Southwest      Oil & Gas Income Fund VIII-A, L.P., |
|--------|--------------------------------------------------------|
|   | a Delaware      limited partnership               |
|   |                                                   |
| By:    | Southwest      Royalties, Inc., Managing               |
|   | General      Partner                                   |
|   |                                                   |
|   |                                                   |
| By:    | /s/      L. Paul Latham                                |
|   | L.      Paul Latham                                    |
|   | President      and Chief Executive Officer             |
|   |                                                   |
| Date:  | March      28, 2008                                    |

|                                                                                       |   |                                                                                       |
|--------------------------------------------------------------------------------------------|--------|--------------------------------------------------------------------------------------------|
| /s/      Clayton W Williams                                                                |   | /s/      L. Paul Latham                                                                    |
| Clayton      W. Williams, Chairman of the Board                                            |   | L.      Paul Latham, President and a Director                                              |
| and      a Director                                                                        |   |                                                                                       |
|                                                                                       |   |                                                                                       |
| Date:           March      28, 2008 |   | Date:           March      28, 2008 |
|                                                                                       |   |                                                                                       |
|                                                                                       |   |                                                                                       |
|                                                                                       |   |                                                                                       |
|                                                                                       |   |                                                                                       |
| /s/      Mel G. Riggs                                                                      |   |                                                                                       |
| Mel      G. Riggs, Vice President – Finance,                                         |   |                                                                                       |
| Treasurer      and a Director                                                              |   |                                                                                       |
|                                                                                       |   |                                                                                       |
| Date:           March      28, 2008 |   |                                                                                       |
|                                                                                       |   |                                                                                       |
|                                                                                       |   |                                                                                       |