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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

|x                                | QUARTERLY   REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 
|-------------------------------- | ------------------------------------------------------------------------------------------
|                                 | For   the quarterly period ended March 31, 2007                                           
|                                 |                                                                                           
|or                              
|                                 |                                                                                           
|o                                | TRANSITION   REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|                                 | For   the transition period from   _______________________to____________________________  
|                                 |                                                                                           
|Commission File Number 000-51924

|RIDGEWOOD   ENERGY O FUND, LLC                          
|--------------------------------------------------------
|(Exact name of registrant as   specified in its charter)

|Delaware                                                           |  | 76-0774429                              
|------------------------------------------------------------------ |  | ----------------------------------------
|(State   or other jurisdiction of   incorporation or organization) |  | (I.R.S.   Employer   Identification No.)

|                                                      
|------------------------------------------------------
|1314 King Street, Wilmington,   Delaware 19801        
|(Address   of principal executive offices) (Zip code) 
|                                                      
|(302) 888-7444                                        
|(Registrants   telephone number, including area code)

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.

|Yes
x | No
o
|----- | ----

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or non-accelerated filer.  See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act.  (Check one) :

|                            |                       |                          
|--------------------------- | --------------------- | -------------------------
|Large   accelerated filer
o | Accelerated   filer
o | Non-accelerated   filer
x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

|Yes
o | No
x
|----- | ----

As of May 9, 2007 there were 870.6486 shares of membership interest of the registrant outstanding.

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Table of Contents

|                               |                                                                                                                                                                                                        | Page
|------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----
|                               |                                                                                                                                                                                                        |     
|Part I - FINANCIAL INFORMATION |                                                                                                                                                                                                       
|                               |                                                                                                                                                                                                       
|Item 1.                        | Financial   Statements:                                                                                                                                                                                |     
|                               | Unaudited   Condensed Balance Sheets as of March 31, 2007 and December 31, 2006                                                                                                                        | 3   
|                               | Unaudited   Condensed Statements of Operations and Other Comprehensive Loss for the three   months ended March 31, 2007 and 2006 and the period December 21, 2004   (Inception) through March 31, 2007 | 4   
|                               | Unaudited   Condensed Statements of Cash Flows for the three months ended March 31, 2007   and 2006 and the period December 21, 2004 (Inception) through March 31, 2007                                | 5   
|                               | Notes to   Unaudited Condensed Financial Statements                                                                                                                                                    | 6   
|                               |                                                                                                                                                                                                        |     
|Item 2.                        | Managements   Discussion and Analysis of Financial Condition and Results of Operations                                                                                                                | 12  
|Item 3.                        | Quantitative   and Qualitative Disclosures About Market Risk                                                                                                                                           | 18  
|Item 4.                        | Controls   and Procedures                                                                                                                                                                              | 18  
|                               |                                                                                                                                                                                                        |     
|Part II - OTHER INFORMATION    |                                                                                                                                                                                                       
|                               |                                                                                                                                                                                                        |     
|Item 1.                        | Legal   Proceedings                                                                                                                                                                                    | 19  
|Item 1A.                       | Risk Factors                                                                                                                                                                                           | 19  
|Item 2.                        | Unregistered   Sales of Equity Securities and Use of Proceeds                                                                                                                                          | 19  
|Item 3.                        | Defaults   Upon Senior Securities                                                                                                                                                                      | 19  
|Item 4.                        | Submissions   of Matters to a Vote of Security Holders                                                                                                                                                 | 19  
|Item 5.                        | Other   Information                                                                                                                                                                                    | 19  
|Item 6.                        | Exhibits                                                                                                                                                                                               | 20  
|                               |                                                                                                                                                                                                        |     
|                               | SIGNATURES                                                                                                                                                                                             | 21  

2



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##### 

Part I - Financial InformationItem 1.  Financial Statements

RIDGEWOOD ENERGY O FUND, LLC (An exploratory stage enterprise) UNAUDITED CONDENSED BALANCE SHEETS (in thousands, except share data)

|                                                                                 |  | March 31,   2007 |         | December 31,   2006 |  
|-------------------------------------------------------------------------------- |  | ---------------- | ------- | ------------------- | -
|                                                                                 |  |                  |         |                     |  
|ASSETS                                                                           |  |                  |         |                     |  
|Current assets:                                                                  |  |                  |         |                     |  
|Cash   and cash equivalents                                                      |  | $                | 2,137   |                     | $
|Short-term   investment in marketable securities                                 |  |                  | 51,003  |                     |  
|Insurance   receivable                                                           |  |                  | 16,478  |                     |  
|Other   current assets                                                           |  |                  | 26      |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   current assets                                                           |  |                  | 69,644  |                     |  
|Salvage fund                                                                     |  |                  | 1,068   |                     |  
|                                                                                 |  |                  |         |                     |  
|Oil and gas properties                                                           |  |                  |         |                     |  
|Unproved   properties                                                            |  |                  | 148     |                     |  
|Proved   properties                                                              |  |                  | 3,917   |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   oil and gas properties                                                   |  |                  | 4,065   |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   assets                                                                   |  | $                | 74,777  |                     | $
|                                                                                 |  |                  |         |                     |  
|LIABILITIES AND MEMBERS CAPITAL                                                 |  |                  |         |                     |  
|Current liabilities:                                                             |  |                  |         |                     |  
|Due   to operators                                                               |  | $                | 2,657   |                     | $
|Accrued   expenses payable                                                       |  |                  | 140     |                     |  
|Due   to affiliates, net (Note 5)                                                |  |                  | 3       |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   current liabilities                                                      |  |                  | 2,800   |                     |  
|Asset   retirement obligation                                                    |  |                  | 38      |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   liabilities                                                              |  |                  | 2,838   |                     |  
|                                                                                 |  |                  |         |                     |  
|Commitments and   contingencies (Note 7)                                         |  |                  |         |                     |  
|Members capital:                                                                |  |                  |         |                     |  
|Manager:                                                                         |  |                  |         |                     |  
|Deficit   accumulated during the exploratory stage                               |  |                  | (1,358  | )                   |  
|                                                                                 |  |                  |         |                     |  
|Managers   total                                                                |  |                  | (1,358  | )                   |  
|                                                                                 |  |                  |         |                     |  
|Shareholders:                                                                    |  |                  |         |                     |  
|Capital   contributions (935 shares authorized; 870.6486 issued and outstanding) |  |                  | 128,990 |                     |  
|Syndication   costs                                                              |  |                  | (14,742 | )                   |  
|Deficit   accumulated during the exploratory stage                               |  |                  | (40,951 | )                   |  
|                                                                                 |  |                  |         |                     |  
|Shareholders   total                                                            |  |                  | 73,297  |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   members capital                                                         |  |                  | 71,939  |                     |  
|                                                                                 |  |                  |         |                     |  
|Total   liabilities and members capital                                         |  | $                | 74,777  |                     | $
|                                                                                 |  |                  |         |                     |  

The accompanying notes are an integral part of these unaudited condensed financial statements.

3



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RIDGEWOOD ENERGY O FUND, LLC(An exploratory stage enterprise) UNAUDITED CONDENSED STATEMENTS OF OPERATIONS AND OTHER COMPREHENSIVE LOSS (in thousands, except share data)

|                                           |  |                                |        | For the period   December 21, 2004   (Inception)   through   March 31,   2007 |  
|------------------------------------------ |  | ------------------------------ | ------ | ----------------------------------------------------------------------------- | -
|                                           |  | Three Months Ended   March 31, |        |                                                                              
|                                           |  |                                |        |                                                                              
|                                           |  | 2007                           |        | 2006                                                                          |  
|                                           |  |                                |        |                                                                               |  
|Revenue                                    |  |                                |        |                                                                               |  
|Oil   and gas revenues                     |  | $                              |       |                                                                               | $
|Expenses                                   |  |                                |        |                                                                               |  
|Dry-hole   costs                           |  |                                | 1,850  |                                                                               |  
|Investment   fees to affiliate (Note 5)    |  |                                |       |                                                                               |  
|Management   fees to affiliate (Note 5)    |  |                                | 587    |                                                                               |  
|Casualty   loss                            |  |                                |       |                                                                               |  
|Accretion   expense                        |  |                                | 1      |                                                                               |  
|General   and administrative expenses      |  |                                | 96     |                                                                               |  
|                                           |  |                                |        |                                                                               |  
|Total   expenses                           |  |                                | 2,534  |                                                                               |  
|                                           |  |                                |        |                                                                               |  
|Loss   from operations                     |  |                                | (2,534 | )                                                                             |  
|Other   income                             |  |                                |        |                                                                               |  
|Interest   income                          |  |                                | 714    |                                                                               |  
|                                           |  |                                |        |                                                                               |  
|Net   loss                                 |  |                                | (1,820 | )                                                                             |  
|Other   comprehensive loss                 |  |                                |        |                                                                               |  
|Unrealized   loss on marketable securities |  |                                |       |                                                                               |  
|                                           |  |                                |        |                                                                               |  
|Total   comprehensive loss                 |  | $                              | (1,820 | )                                                                             | $
|                                           |  |                                |        |                                                                               |  
|Manager Interest                           |  |                                |        |                                                                               |  
|Net   loss                                 |  | $                              | (110   | )                                                                             | $
|Shareholder Interest                       |  |                                |        |                                                                               |  
|Net   loss                                 |  | $                              | (1,710 | )                                                                             | $
|Net   loss per share                       |  | $                              | (1,964 | )                                                                             | $

The accompanying notes are an integral part of these unaudited condensed financial statements.

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RIDGEWOOD ENERGY O FUND, LLC (An exploratory stage enterprise) UNAUDITED CONDENSED STATEMENTS OF CASH FLOWS (in thousands)

|                                                                                                                          |  |                                |         | For the period   December 21, 2004   (Inception)   through   March 31, 2007 |  
|------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------ | ------- | --------------------------------------------------------------------------- | -
|                                                                                                                          |  | Three months ended   March 31, |         |                                                                            
|                                                                                                                          |  |                                |         |                                                                            
|                                                                                                                          |  | 2007                           |         | 2006                                                                        |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Cash flows   from operating activities                                                                                    |  |                                |         |                                                                             |  
|Net   loss                                                                                                                |  | $                              | (1,820  | )                                                                           | $
|Adjustments   to reconcile net loss to net cash used in operating activities                                              |  |                                |         |                                                                             |  
|Dry-hole   costs                                                                                                          |  |                                | 1,850   |                                                                             |  
|Interest   earned on marketable securities                                                                                |  |                                | (500    | )                                                                           |  
|Accretion   expense                                                                                                       |  |                                | 1       |                                                                             |  
|Changes   in assets and liabilities:                                                                                      |  |                                |         |                                                                             |  
|Increase   (decrease) in other current assets                                                                             |  |                                | 220     |                                                                             |  
|Increase   in due to affiliates                                                                                           |  |                                | 3       |                                                                             |  
|Increase   in accrued expenses payable                                                                                    |  |                                | 42      |                                                                             |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Net   cash used in operating activities                                                                                   |  |                                | (204    | )                                                                           |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Cash flows   from investing activities                                                                                    |  |                                |         |                                                                             |  
|Capital   expenditures for oil and gas properties                                                                         |  |                                | (5,521  | )                                                                           |  
|Salvage   fund investments                                                                                                |  |                                | (8      | )                                                                           |  
|Proceeds   from the sale of marketable securities                                                                         |  |                                |        |                                                                             |  
|Investment   in marketable securities                                                                                     |  |                                | (25,318 | )                                                                           |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Net   cash used in investing activities                                                                                   |  |                                | (30,847 | )                                                                           |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Cash flows   from financing activities                                                                                    |  |                                |         |                                                                             |  
|Contributions   from shareholders                                                                                         |  |                                |        |                                                                             |  
|Syndication   costs paid                                                                                                  |  |                                |        |                                                                             |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Net   cash (used in) provided by financing activities                                                                     |  |                                |        |                                                                             |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Net   (decrease) increase in cash and cash equivalents                                                                    |  |                                | (31,051 | )                                                                           |  
|Cash   and cash equivalents, beginning of period                                                                          |  |                                | 33,188  |                                                                             |  
|                                                                                                                          |  |                                |         |                                                                             |  
|Cash   and cash equivalents, end of period                                                                                |  | $                              | 2,137   |                                                                             | $
|                                                                                                                          |  |                                |         |                                                                             |  
|Supplemental   schedule of non-cash investing activities                                                                  |  |                                |         |                                                                             |  
|Advances   used for capital expenditures in oil and gas properties reclassified to   dry-hole costs and proved properties |  | $                              |        |                                                                             | $
|                                                                                                                          |  |                                |         |                                                                             |  

The accompanying notes are an integral part of these unaudited condensed financial statements.

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RIDGEWOOD ENERGY O FUND, LLC(An exploratory stage enterprise)NOTES TO UNAUDITED CONDENSED FINANCIAL STATEMENTS

1.   Organization and Purpose

The Ridgewood Energy O Fund, LLC (the Fund) (an exploratory stage enterprise), a Delaware limited liability company, was formed on December 21, 2004 and operates pursuant to a limited liability company agreement (Agreement) dated as of February 16, 2005 by and among Ridgewood Energy Corporation (the Manager) and the shareholders of the Fund.   Although the date of formation is December 21, 2004, the Fund did not begin operations until February 16, 2005 when it began its private offering of shares.

The Fund was organized to acquire, drill, construct and develop oil and natural gas properties located in the United States offshore waters of Texas, Louisiana and Alabama in the Gulf of Mexico.  The Fund has devoted most of its efforts to raising capital and oil and natural gas exploration activities.  To date, the Fund has not earned revenue from these operations and is considered in the exploratory stage.

The Manager performs (or arranges for the performance of) the management and administrative services required for Fund operations. Such services include, without limitation, the administration of shareholder accounts, shareholder relations and the preparation, review and dissemination of tax and other financial information.  In addition, the Manager provides office space, equipment and facilities and other services necessary for Fund operations.  The Manager also engages and manages the contractual relations with outside custodians, depositories, accountants, attorneys, broker-dealers, corporate fiduciaries, insurers, banks and others as required (Notes 2, 5 and 7).

2.   Summary of Significant Accounting Policies

Basis of PresentationThese unaudited interim condensed financial statements have been prepared by the Funds management in accordance with accounting principles generally accepted in the United States of America (GAAP) and in the opinion of management, contain all adjustments (consisting of only normal recurring adjustments) necessary to present fairly the Funds financial position, results of operations and cash flows for the periods presented. Certain information and note disclosures normally included in annual financial statements prepared in accordance with GAAP have been omitted in these unaudited interim condensed financial statements.  The results of operations, financial position, and cash flows for the periods presented herein are not necessarily indicative of future financial results. These unaudited interim condensed financial statements should be read in conjunction with the annual financial statements and the
notes thereto for the period ended December 31, 2006 included in the Funds Annual Report on Form 10-K (Form 10-K) filed with the Securities and Exchange Commission (SEC).

Exploratory Stage EnterpriseManagement uses various criteria to evaluate whether the Fund is an exploratory stage enterprise, including but not limited to, the success of drilling, the timing, significance, quality and flow of production and the results of reserve reports obtained from experts.  On a case by case basis, once a project begins production, management performs diligent analysis at regular intervals utilizing the various criteria noted above to determine the appropriate classification of the Fund as an exploratory stage entity.  Based on such an analysis, management has determined the Fund continues to be an exploratory stage enterprise.

Use of EstimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Manager reviews its estimates, including those related to amounts advanced to and billed by operators, determination of proved reserves, impairments and environmental liabilities.  Actual results may differ from those estimates.

6



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Advances to Operators for Working Interests and ExpendituresThe Funds acquisition of a working interest in a well or a project requires it to make a payment to the seller for the Funds right, title and interest.  The Fund is required to advance its share of estimated cash outlay for the succeeding months operation. The Fund accounts for such payments as advances to operators for working interests and expenditures.  As drilling costs are incurred, the advances are transferred to unproved properties.

Oil and Natural Gas PropertiesInvestments in oil and natural gas properties are operated by unaffiliated entities (Operators) who are responsible for drilling, administering and producing activities pursuant to the terms of the applicable operating agreements with working interest owners. The Funds portion of exploration, drilling, operating and capital equipment expenditures relating to the wells are advanced and billed by Operators through authorization for expenditures.

The successful efforts method of accounting for oil and natural gas producing activities is followed. Acquisition costs are capitalized when incurred.  Other oil and natural gas exploration costs, excluding the costs of drilling exploratory wells, are charged to expense as incurred.  The costs of drilling exploratory wells are capitalized pending the determination of whether the wells have discovered proved commercial reserves.  If proved commercial reserves have not been found, exploratory drilling costs are expensed to dry-hole expense.   Costs to develop proved reserves, including the costs of all development wells and related facilities and equipment used in the production of crude oil and natural gas, are capitalized.  Expenditures for ongoing repairs and maintenance of producing properties are expensed as incurred.

Upon the sale or retirement of a proved property (i.e. a producing well), the cost and related accumulated depletion and amortization will be eliminated from the property accounts, and the resultant gain or loss is recognized.  On the sale or retirement of an unproved property, gain or loss on the sale is recognized.   Currently it is not the Managers intention to sell any of the Funds property interests.

Capitalized acquisition costs of producing oil and natural gas properties are depleted by the unit-of-production method.

As of March 31, 2007 and December 31, 2006 approximately $2.7 million and $6.3 million, respectively, was recorded in due to operators related to the acquisition of oil and gas property and/or drilling costs.  The balance at December 31, 2006 was paid during the first quarter of 2007.

Revenue Recognition and Production ReceivableOil and natural gas sales are recognized when delivery is made by the Operator to the purchaser and title is transferred (i.e., production has been delivered to a pipeline or transport vehicle). At the time of transfer a production receivable is recorded.  The Fund has not earned revenue from inception through March 31, 2007.

The volume of oil and natural gas sold on the Funds behalf may differ from the volume of oil and natural gas the Fund is entitled to.  The Fund will account for such oil and natural gas production imbalances by the entitlements method.  Under the entitlements method, the Fund will recognize a receivable from other working interest owners for volumes oversold by other working interest owners, and a payable to other working interest owners for volumes oversold by the Fund. At March 31, 2007 and December 31, 2006, there were no material oil or natural gas balancing arrangements between the Fund and other working interest owners.

Syndication CostsDirect costs associated with offering the Funds shares including professional fees, selling expenses and administrative costs payable to the Manager, an affiliate of the Manager and outside brokers are reflected as a reduction of shareholders capital.

Asset Retirement ObligationsFor oil and natural gas properties, there are obligations to perform removal and remediation activities when the properties are retired.  When a project reaches drilling depth and is determined to be either proved or dry, an asset retirement obligation is incurred.  Plug and abandonment costs associated with unsuccessful properties are expensed as incurred as dry-hole costs.

7



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|                                |  | March 31,   2007 |    | December 31,   2006 |  
|------------------------------- |  | ---------------- | -- | ------------------- | -
|                                |  |                  |    |                     |  
|                                |  | (in thousands)   |   
|Balance - Beginning of   period |  | $                | 37 |                     | $
|Liabilities incurred            |  |                  |   |                     |  
|Liabilities settled             |  |                  |   |                     |  
|Accretion expense               |  |                  | 1  |                     |  
|                                |  |                  |    |                     |  
|Balance - End of period         |  | $                | 38 |                     | $
|                                |  |                  |    |                     |  

Impairment of Long-Lived AssetsIn accordance with the provisions of Statement of Financial Accounting Standards No. 144, Accounting for the Impairment of Long-Lived Assets, long-lived assets, such as oil and natural gas properties, are evaluated when events or changes in circumstances indicate the carrying value of such assets may not be recoverable. The determination of whether impairment has occurred is made by comparing the carrying values of long-lived assets to the estimated future undiscounted cash flows attributable to the asset.  The impairment loss recognized is the excess of the carrying value over the future discounted cash flows attributable to the asset or the estimated fair value of the asset.  For the three months ended March 31, 2007 and 2006, and for the period December 21, 2004 (Inception) through March 31, 2007, no impairments were recorded.

Depletion and AmortizationDepletion and amortization of the cost of proved oil and natural gas properties are calculated using the units of production method.  Proved developed reserves are used as the base for depleting the cost of successful exploratory drilling and development costs.  The sum of proved developed and proved undeveloped reserves is used as the base for depleting (or amortizing) leasehold acquisition costs, the costs to acquire proved properties and platform and pipeline costs.  At March 31, 2007 and December 31, 2006, the Fund did not have proved oil and natural gas reserves.

Income TaxesNo provision is made for income taxes in the financial statements.  Because the Fund is a limited liability corporation (LLC), the income or loss is passed through and included in the tax returns of the individual shareholders.

Cash and Cash EquivalentsAll highly liquid investments with maturities when purchased of three months or less are considered as cash and cash equivalents.  At times, bank deposits may be in excess of federal insured limits.  At March 31, 2007 and December 31, 2006, bank balances, inclusive of salvage fund, exceeded federally insured limits by approximately $3.0 million and $8.0 million, respectively.  The Fund maintains bank deposits with accredited financial institutions to mitigate such risk.

Salvage FundThe Fund deposits in a separate interest-bearing account, or a salvage fund, money to provide for dismantling production platforms and facilities, plugging and abandoning the wells and removing the platforms, facilities and wells after their useful lives, in accordance with applicable federal and state laws and regulations.

Interest earned on the account will become part of the salvage fund; there are no legal restrictions on the withdrawal from the salvage fund.

Short-term Investments in Marketable SecuritiesAt times the Fund may purchase short-term investments comprised of US Treasury Notes with maturities greater than three months and as such are considered held-to-maturity investments.  Held-to-maturity securities are those investments that the Fund has the ability and intent to hold until maturity.  Held-to-maturity investments are recorded at cost plus accrued income, adjusted for the amortization of premiums and discounts, which approximate fair value.  Interest income is accrued as earned.  Held to maturity investments at March 31, 2007 of $51.0 million, or $25.5 million each, mature in May and August 2007.

8



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Income and Expense AllocationProfits and losses are to be allocated 85% to shareholders in proportion to their relative capital contributions and 15% to the Manager, except for items of expense, loss, deduction and credit that are attributable to the expenditure of shareholders capital contributions, which are allocated 99% to shareholders and 1% to the Manager.

3.   Unproved Properties - Capitalized Exploratory Well Costs

Leasehold acquisition and exploratory drilling costs are capitalized pending determination of whether the well has found proved reserves.  Unproved properties are assessed on a quarterly basis by evaluating and monitoring if sufficient progress is made on assessing the reserves.  Capitalization costs are expensed as dry-hole costs in the event that reserves are not found or are not in sufficient quantities to complete the well and develop the field.  Dry-hole costs, detailed in the table below, were $1.9 million, $4.9 million and $35.1 million for the three months ended March 31, 2007 and 2006 and for the period December 21, 2004 (Inception) through March 31, 2007, respectively.

|                   |  | For the three months ended   March 31, |       | For the period   December 21, 2004   (Inception)   through   March 31, 2007 |  
|------------------ |  | -------------------------------------- | ----- | --------------------------------------------------------------------------- | -
|                   |  |                                        |       |                                                                            
|                   |  | 2007                                   |       | 2006                                                                        |  
|                   |  |                                        |       |                                                                             |  
|                   |  | (in thousands)                         |      
|West Delta 95      |  | $                                      | 1,825 |                                                                             | $
|Eugene Island 357  |  |                                        |      |                                                                             |  
|Eugene Island 334  |  |                                        | 6     |                                                                             |  
|West Cameron 78/95 |  |                                        | 19    |                                                                             |  
|                   |  |                                        |       |                                                                             |  
|                   |  | $                                      | 1,850 |                                                                             | $
|                   |  |                                        |       |                                                                             |  

The following table reflects the net changes in unproved properties at March 31, 2007 and December 31, 2006.  At March 31, 2007, the Fund had no capitalized exploratory well costs greater than one year.

|                                                                                               |  | March 31,   2007 |     | December 31,   2006 |  
|---------------------------------------------------------------------------------------------- |  | ---------------- | --- | ------------------- | -
|                                                                                               |  |                  |     |                     |  
|                                                                                               |  | (in thousands)   |    
|Balance - Beginning of the   period                                                            |  | $                |    |                     | $
|Additions to capitalized   exploratory well costs pending the determination of proved reserves |  |                  | 148 |                     |  
|Reclassifications to proved   properties based on the determination of proved reserves         |  |                  |    |                     |  
|Capitalized exploratory   well costs charged to dry hole costs                                 |  |                  |    |                     |  
|                                                                                               |  |                  |     |                     |  
|Balance - End of the period                                                                    |  | $                | 148 |                     | $
|                                                                                               |  |                  |     |                     |  

4.   Distributions

Distributions to shareholders are allocated in proportion to the number of shares held.

The Manager will determine whether available cash from operations, as defined in the Funds operating agreement, is to be distributed.  Such distribution will be allocated 85% to the shareholders and 15% to the Manager, as defined in the Funds operating agreement.

9



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Available cash from dispositions, as defined in the Funds operating agreement, will be paid 99% to shareholders and 1% to the Manager until the shareholders have received total distributions equal to their capital contributions.  After shareholders have received distributions equal to their capital contributions, 85% of available cash from dispositions will be distributed to shareholders and 15% to the Manager.

There have been no distributions made by the Fund.

5.   Related Parties

Ridgewood Energy Corporation, the Manager was paid a one time investment fee of 4.5% of initial capital contributions.  Fees are payable for services of investigating and evaluating investment opportunities and effecting transactions when the capital contribution is made.  For the period December 21, 2004 (Inception) through March 31, 2007, investment fees were approximately $5.9 million.   There were no investment fees for the three months ended March 31, 2007 and 2006.

A management agreement provides that the Manager render management, administrative and advisory services. For such services, the Manager receives an annual management fee, payable monthly, of 2.5% of total capital contributions. Effective January 1, 2007, the manager has changed its policy regarding the annual management fee.  Under the new policy, the management fee is equal to 2.5% of the total shareholder capital contributions, net of cumulative dry-hole costs incurred by the Fund.  Management fees for the three months ended March 31, 2007 and 2006 and for the period December 21, 2004 (Inception) through March 31, 2007 were $0.6 million, $0.8 million and $6.3 million, respectively.  At March 31, 2007, $19 thousand was included in due to affiliates related to the management fee.

The Manager was paid an offering fee which approximated 3.5% of capital contributions to cover expenses incurred in the offer and sale of shares of the Fund.  Such offering fee was included in syndication costs (Note 2) of approximately $14.7 million.  For the period December 21, 2004 (Inception) through March 31, 2007, offering fees were approximately $4.6 million.   There were no offering fees for the three months ended March 31, 2007 and 2006.

From time to time, short-term payables and receivables, which do not bear interest, arise from transactions with affiliates in the ordinary course of business.  The Manager owed the Fund $16 thousand, included in other current assets at March 31, 2007 and December 31, 2006, for such transactions.

None of the compensation to be received by the Manager has been derived as a result of arms length negotiations.

The Fund has working interest ownership in certain projects to acquire and develop oil and natural gas projects with other entities that are likewise managed by the Manager.

6.   Fair Value of Financial Instruments

As of March 31, 2007 and December 31, 2006, the carrying value of cash and cash equivalents, short-term investments and salvage fund approximate fair value.

7.   Commitment and Contingencies

Environmental ConsiderationsThe exploration for and development of oil and natural gas involves the extraction, production and transportation of materials which, under certain conditions, can be hazardous or cause environmental pollution problems. The Manager and the Operators are continually taking action they believe appropriate to satisfy applicable federal, state and local environmental regulations and do not currently anticipate that compliance with federal, state and local environmental regulations will have a material adverse effect upon capital expenditures, results of operations or the competitive position of the Fund in the oil and natural gas industry.  However, due to the significant public and governmental interest in environmental matters related to those activities, the Manager cannot predict the effects of possible future legislation, rule changes, or governmental or private claims.  At March 31, 2007 and December 31,
2006, there were no known environmental contingencies that required the Fund to record a liability.

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Insurance CoverageThe Fund is subject to all risks inherent in the exploration for and development of oil and natural gas. Insurance coverage as is customary for entities engaged in similar operations is maintained, but losses may occur from uninsurable risks or amounts in excess of existing insurance coverage. The occurrence of an event which is not insured or not fully insured could have an adverse impact upon earnings and financial position.

During Hurricane Katrina in August 2005, the West Delta 95 project sustained storm damage. The Fund has incurred $12.8 million of recovery costs, of which $2.3 million is recorded as a current liability at March 31, 2007.  The Fund has recorded an insurance recovery receivable of $12.6 million, net of its $0.2 million deductible.  In addition, on May 22, 2006, the Fund reported a claim to its insurance carrier for cost recovery related to the West Cameron 78/95 project.  An insurance recovery receivable of $3.8 million has been recorded at March 31, 2007 relative to this claim, net of its $0.2 million deductible.  The Fund records receivables for insured losses when the expected insurance proceeds are probable and reasonably estimable

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ITEM 2.  MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cautionary Statement Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q, including all documents incorporated by reference, includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the Securities Act) and Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995, and the safe harbor provisions thereof. These forward-looking statements are usually accompanied by the words anticipates, believes, plan, seek, expects, intends, estimates, projects, will likely result, future and similar terms and expressions. The forward-looking statements in this Quarterly Report on Form 10-Q reflect our current views with respect to future events and financial performance. These forward-looking statements are subject to certain risks and
uncertainties, including, among other things, the high-risk nature of natural gas exploratory operations, the fact that our drilling activities are managed by third parties, the volatility of natural gas prices and extraction, and those other risks and uncertainties discussed in the Funds 2006 10-K filed with the Securities and Exchange Commission that could cause actual results to differ materially from historical results or those anticipated. You are urged to carefully consider all such factors.

In light of these risks and uncertainties, there can be no assurance that the forward-looking information contained in this Form 10-Q will in fact occur or prove to be accurate. Readers should not place undue reliance on the forward-looking statements contained herein, which speak only as of todays date. We undertake no obligation to publicly revise these forward-looking statements to reflect events or circumstances that may arise after today. All subsequent written or oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by this section.

Critical Accounting Policies and Estimates

The following discussion and analysis of our financial condition and operating results is based on our financial statements.  The preparation of this Quarterly Report on Form 10-Q requires us to make estimates and assumptions that affect the reported amount of assets and liabilities, disclosure of contingent assets and liabilities at the date of our financial statements, and the reported amount of revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.  See Notes to Unaudited Condensed Financial Statements in Part I of this Form 10-Q for a presentation of the Funds significant accounting principles.  No changes have been made to the Funds critical accounting policies and estimates disclosed in its 2006 Form 10-K.

Overview of Our Business

The Fund is an independent oil and natural gas producer. The Funds primary investment objective is to generate cash flow for distribution to our shareholders through participation in oil and natural gas exploration and development projects in the Gulf of Mexico.

The Manager performs certain duties on the Funds behalf including the evaluation of potential projects for investment and ongoing administrative and advisory services associated with these projects. The Fund does not currently, nor is there any plan to operate any project in which the Fund participates. The Manager enters into operating agreements with third-party operators for the management of all exploration, development and producing operations, as appropriate. The Manager is paid an annual management fee (2.5% of capital contributions, net of cumulative dry-hole costs), payable monthly, for ongoing administrative and advisory duties as well as reimbursement of expenses.  The Manager also participates in distributions.

Business Update

The Fund owns working interests and has participated in the drilling of six wells, four of which were determined to be dry-holes and one that began drilling in April 2007.  One well has proved reserves in commercial quantities, and production is expected in August 2007.

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South Pelto 9 In July 2006, the Fund acquired a 16.67% working interest from Newfield Exploration Company (Newfield), the operator.   On September 26, 2006, the Fund started drilling South Pelto 9 a 17,700 foot single well project in approximately 257 feet of water offshore Louisiana.  South Pelto 9 was deemed successful in late-2006.  The operator, Newfield, has indicated the well should be producing in August 2007.  Through March 31, 2007, the Fund has made capital expenditures of $3.9 million towards a total estimated budget of $4.6 million.

Eugene Island 346/347In March 2007, the Fund acquired a 5% working interest in the exploratory project Eugene Island 346/347 from Newfield, the operator.  Drilling commenced in April 2007 and results are expected in June 2007.  If drilling is successful, production is expected to begin in third quarter 2008.  The drilling risk is estimated at $1.8 million and the total budget for this property is $9.2 million.

2007 Dry Hole

West Delta 95The Fund acquired a 20% working interest in West Delta 95 from GOM Shelf LLC (Apache Corporation) (Apache), and an 8.05% working interest from BP America Production Co. (BP).  BP was the Operator of West Delta until July 26, 2006, at which time Apache took over the project as Operator.   On May 11, 2005 the first exploratory well began drilling.  In August 2005, before reaching its target depth, the project was evacuated in preparation for Hurricane Katrina.  As a result of Hurricane Katrina, the well sustained damage to the conductor/drive pipe which was bent and partially buried in the Gulf floor.  On April 15, 2006, recovery operations began by removing the drive pipe from the Gulf floor.  Recovery operations were suspended in July 2006 as a result of the onset of hurricane season.  Recovery operations were completed and drilling resumed in January 2007.

On February 12, 2007 the well was determined to not have commercially productive quantities of either natural gas or oil and therefore was deemed to be a dry-hole.  As a result of the dry-hole, West Delta 95 was plugged and abandoned.  The abandonment and impairment resulted in a charge of $15.2 million in the fourth quarter 2006 and $1.8 million in the first quarter 2007, bringing the total dry-hole costs to $17.0 million.

The Fund filed a claim with its insurance carrier to recover the costs incurred as a result of Hurricane Katrina.  These costs have been estimated at $12.8 million.  The Fund expects to recover insured amounts of $12.6 million.

West Cameron 78/95The Fund acquired a 30% working interest from the Operator, El Paso. The well began drilling on April 21, 2006.  Drilling went according to plan until the well reached a depth of 10,781 feet on May 17, 2006 when the drill string became stuck.  The smaller drill pipe was recovered and the well was sidetracked (re-drilled) at a depth of 4,880 feet.   Drilling continued to 14,500 feet and at which point the well was determined to be a dry-hole.  On July 6, 2006 the decision was made to plug and abandon the well.  Dry-hole costs including plug and abandonment expenses incurred by the Fund for the year ended December 31, 2006, totaled $4.4 million, net of insurance recovery amounts.  An insurance recovery receivable of $3.8 million is recorded at March 31, 2007 and December 31, 2006, representing managements estimate of recoverable amounts.  The Fund has filed a claim with its insurance
carrier and believes the insurance receivable is recoverable.

Results of Operations

The following review of operations for the three months ended March 31, 2007 and 2006, and for the period December 21, 2004 (Inception) through March 31, 2007 should be read in conjunction with the Funds financial statements and the notes thereto.  The following table summarizes the Funds results of operations (in thousands, except share data):

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|                                         |  |                                |        |      |   |        |   | For the period   December 21,    2004   (Inception)   through   March 31,   2007 |        
|---------------------------------------- |  | ------------------------------ | ------ | ---- | - | ------ | - | -------------------------------------------------------------------------------- | -------
|                                         |  |                                |        |      |   |        |   |                                                                                 
|                                         |  |                                |        |      |   |        |   |                                                                                 
|                                         |  | Three Months Ended   March 31, |        |     
|                                         |  |                                |        |     
|                                         |  | 2007                           |        | 2006 |   |       
|                                         |  |                                |        |      |   |        |   |                                                                                  |        
|Revenue                                  |  |                                |        |      |   |        |   |                                                                                  |        
|Oil and gas revenues                     |  | $                              |       |      | $ |       |   | $                                                                                |       
|Expenses                                 |  |                                |       |      |   |        |   |                                                                                  |        
|Dry-hole costs                           |  |                                | 1,850  |      |   | 4,922  |   |                                                                                  | 35,098 
|Investment fees to affiliate             |  |                                |       |      |   |       |   |                                                                                  | 5,858  
|Management fees to affiliate             |  |                                | 587    |      |   | 806    |   |                                                                                  | 6,340  
|Casualty loss                            |  |                                |       |      |   |       |   |                                                                                  | 380    
|Accretion expense                        |  |                                | 1      |      |   |       |   |                                                                                  | 1      
|General and administrative expenses      |  |                                | 96     |      |   | 86     |   |                                                                                  | 939    
|                                         |  |                                |        |      |   |        |   |                                                                                  |        
|Total expenses                           |  |                                | 2,534  |      |   | 5,814  |   |                                                                                  | 48,616 
|                                         |  |                                |        |      |   |        |   |                                                                                  |        
|Loss from operations                     |  |                                | (2,534 | )    |   | (5,814 | ) |                                                                                  | (48,616
|Other income                             |  |                                |        |      |   |        |   |                                                                                  |        
|Interest income                          |  |                                | 714    |      |   | 849    |   |                                                                                  | 6,307  
|                                         |  |                                |        |      |   |        |   |                                                                                  |        
|Net loss                                 |  |                                | (1,820 | )    |   | (4,965 | ) |                                                                                  | (42,309
|Other comprehensive loss                 |  |                                |        |      |   |        |   |                                                                                  |        
|Unrealized loss on marketable securities |  |                                |       |      |   | (43    | ) |                                                                                  |       
|                                         |  |                                |        |      |   |        |   |                                                                                  |        
|Total comprehensive loss                 |  | $                              | (1,820 | )    | $ | (5,008 | ) | $                                                                                | (42,309
|                                         |  |                                |        |      |   |        |   |                                                                                  |        

Operating Revenues. From inception of the Fund in December 2004 through March 31, 2007, the Fund has not recorded any operating revenues and is considered an exploratory stage enterprise.

Operating and Other Expenses

Dry-hole costs.Dry-hole costs are those costs incurred to drill and develop a well that is ultimately found to be incapable of producing either oil or natural gas in sufficient quantities to justify completion of the well. The following table summarizes dry-hole costs inclusive of plug and abandonment costs for the three months ended March 31, 2007 and 2006 and the period December 21, 2004 (Inception) through March 31, 2007.

|                     |  |                                      |       |      |   |       |  | For the period    December 21,   2004   (Inception)   through   March 31,   2007 |       
|-------------------- |  | ------------------------------------ | ----- | ---- | - | ----- |  | -------------------------------------------------------------------------------- | ------
|                     |  |                                      |       |      |   |       |  |                                                                                 
|                     |  |                                      |       |      |   |       |  |                                                                                 
|                     |  |                                      |       |      |   |       |  |                                                                                 
|                     |  | For the three months ended March 31, |       |     
|                     |  |                                      |       |     
|                     |  | 2007                                 |       | 2006 |   |      
|                     |  |                                      |       |      |   |       |  |                                                                                  |       
|                     |  | (in thousands)                       |      
|West Delta   95      |  | $                                    | 1,825 |      | $ |      |  | $                                                                                | 16,990
|Eugene   Island 357  |  |                                      |      |      |   | 4,141 |  |                                                                                  | 4,390 
|Eugene   Island 334  |  |                                      | 6     |      |   | 781   |  |                                                                                  | 9,304 
|West Cameron   78/95 |  |                                      | 19    |      |   |      |  |                                                                                  | 4,414 
|                     |  |                                      |       |      |   |       |  |                                                                                  |       
|                     |  | $                                    | 1,850 |      | $ | 4,922 |  | $                                                                                | 35,098
|                     |  |                                      |       |      |   |       |  |                                                                                  |       

Investment Fees.The Manager was paid a one time investment fee of 4.5% of initial capital contributions. The fee is payable for the service of investigating and evaluating investment opportunities and affecting transactions when the capital contributions are made.  For the period December 21, 2004 (Inception) through March 31, 2007, investment fees paid were approximately $5.9 million.  There were no investment fees incurred or paid during the three months ended March 31, 2007 and 2006.

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Management Fees.The Manager receives an annual management fee, payable monthly, to cover expenses associated with overhead incurred by the Manager for its on-going management, administrative and advisory services.  Such overhead expenses include but are not limited to rent, payroll and benefits for employees of the Manager, and other administrative costs. Commencing in January 1, 2007, the management fee, payable monthly, is equal to 2.5% of the total shareholder capital contributions, net of cumulative dry-hole expenses incurred by the Fund.  Management fees for the three months ended March 31, 2007 and 2006 and for the period December 21, 2004 (Inception) through March 31, 2007 were approximately $0.6 million, $0.8 million and $6.3 million, respectively.

Casualty Loss.  For the period December 21, 2004 (Inception) through March 31, 2007 the Fund recorded a casualty loss of $0.4 million related to its portion of the deductible for casualty losses associated with West Delta 95 and West Cameron 78/95.  The Fund incurred insured expenses of $12.8 million and $4.0 million for West Delta 95 and West Cameron 78/95, respectively.  There were no casualty losses during the three months ended March 31, 2007 and 2006.

General and Administrative Expenses.Accounting, legal, fiduciary fees and insurance expenses represent costs specifically identifiable or allocable to the Fund. Accounting and legal fees represent annual audit and tax preparation fees, quarterly reviews and filing fees of the Fund.   Insurance expense represents premiums related to well control insurance and production insurance.

The following table summarizes general and administrative expenses for the three months ended March 31, 2007 and 2006 and for the period December 21, 2004 (Inception) through March 31, 2007.

|                            |  |                                      |    |      |   |    |  | For the period    December 21,   2004   (Inception)   through    March 31,   2007 |    
|--------------------------- |  | ------------------------------------ | -- | ---- | - | -- |  | --------------------------------------------------------------------------------- | ---
|                            |  |                                      |    |      |   |    |  |                                                                                  
|                            |  |                                      |    |      |   |    |  |                                                                                  
|                            |  |                                      |    |      |   |    |  |                                                                                  
|                            |  | For the three months ended March 31, |    |     
|                            |  |                                      |    |     
|                            |  | 2007                                 |    | 2006 |   |   
|                            |  |                                      |    |      |   |    |  |                                                                                   |    
|                            |  | (in thousands)                       |   
|Accounting   and legal fees |  | $                                    | 54 |      | $ | 31 |  | $                                                                                 | 319
|Insurance                   |  |                                      | 15 |      |   | 17 |  |                                                                                   | 424
|Trust fees                  |  |                                      | 27 |      |   | 38 |  |                                                                                   | 189
|Other                       |  |                                      |   |      |   |   |  |                                                                                   | 7  
|                            |  |                                      |    |      |   |    |  |                                                                                   |    
|                            |  | $                                    | 96 |      | $ | 86 |  | $                                                                                 | 939
|                            |  |                                      |    |      |   |    |  |                                                                                   |    

Interest Income.Interest income represents interest earned on money market accounts and short-term US Treasury Notes.  Interest income for the three months ended March 31, 2007 and 2006 and for the period December 21, 2004 (Inception) through March 31, 2007, totaled approximately $0.7 million, $0.8 million and $6.3 million, respectively. Increased interest rates during the three months ended March 31, 2007 principally offset the decrease in average outstanding balances earning interest.

Other Comprehensive Loss.Other comprehensive loss is comprised solely of the unrealized losses on short-term investments and represents unrealized losses on available for sale marketable debt securities.  For the three months ended March 31, 2006, the unrealized loss totaled approximately $43 thousand.  During 2006, the US Treasury Note reached its maturity and the unrealized loss was recorded to offset the previously recorded unrealized gain.

Capital Resources and Liquidity

Operating Cash FlowsCash flows used by operating activities for the three months ended March 31, 2007 were $0.2 million.  Management fees and general and administrative fees of $0.6 million and $0.1 million, respectively, were offset by interest income received of $0.4 million and $0.1 million of favorable working capital.

Cash flows used by operating activities for the three months ended March 31, 2006 were $0.6 million, primarily related to management fees and general and administrative expenses of $0.9 million, partially offset by interest income received of $0.1 million and favorable working capital of $0.2 million.

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Cash flows used by operating activities for the period December 21, 2004 (Inception) through March 31, 2007 were $10.3 million, primarily related to investment fees, management fees and general and administrative fees of $5.9 million, $6.3 million and $0.9 million, respectively, and insurance casualty losses of $0.4 million, partially offset by interest income received of $3.1 million and favorable working capital of $0.1 million.

Investing Cash FlowsCash flows used in investing activities for the three months ended March 31, 2007 were $30.8 million, related to capital expenditures for oil and gas properties of $5.6 million, including expenditures for insured recovery efforts,  and investments in marketable securities of $25.3 million.

Cash flows used in investing activities for the three months ended March 31, 2006 were $1.0 million, for capital expenditures for oil and gas properties.

Cash flow used in investing activities for the period December 21, 2004 (Inception) through March 31, 2007 were $101.8 million related to $52.9 million of capital expenditures for oil and gas properties, including expenditures for insured recovery efforts, and $164.8 million of investments in US treasury bills, inclusive of salvage fund, partially offset by proceeds received from the sale of US treasury bills of $116.0 million.

Financing Cash FlowsThere were no cash flows related to financing activities for the three months ended March 31, 2007.

Cash flows used in financing activities for the three months ended March 31, 2006 were approximately $20 thousand related to syndication costs paid.

Cash flow provided by financing activities for the period December 21, 2004 (Inception) through March 31, 2007 was $114.2 million, primarily related to cash receipts of $129.0 million obtained from the Funds private offering, offset by $14.7 million of payments for syndication costs.

Estimated Capital Expenditures

The Fund has entered into several participation and operating agreements for the drilling and development of its investment properties.  The estimated capital expenditures associated with these agreements can vary depending on the stage of development on a property-by-property basis.  As of March 31, 2007, such estimated capital expenditures totaled approximately $13.8 million, all of which is expected to be paid out of unspent capital contributions within the following twelve months.

The table below presents exploration and development capital expenditures for currently drilling projects as well as estimated budgeted amounts for the next twelve months.  Remaining unspent development capital will be reallocated to one or more new unspecified projects.

|Estimated Capital Expenditures |  |                              |       |                            |   |        | 
|------------------------------ |  | ---------------------------- | ----- | -------------------------- | - | ------ | 
|As of March 31, 2007           |  |                              |       |                            |   |        | 
|                               |  |                              |       |                            |   |        | 
|                               |  | Spent Through March 31, 2007 |       | To be Spent Next 12 Months |  
|                               |  |                              |       |                            |   |        | 
|                               |  | (in thousands)               |      
|South Pelto # 9                |  | $                            | 3,917 |                            | $ | 4,593  | 
|Eugene   Island 346/347        |  |                              | 148   |                            |   | 9,242  | 
|                               |  |                              |       |                            |   |        | 
|                               |  | $                            | 4,065 |                            | $ | 13,835 | 
|                               |  |                              |       |                            |   |        | 

Liquidity Needs

The Funds primary short-term liquidity needs are to fund its 2007 operations, including management fees and capital expenditures, with existing cash on-hand and income earned from its short-term investments and cash and cash equivalents.  The Manager is entitled to receive an annual management fee from the Fund regardless of whether

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the Fund is profitable in that year. The annual fee, payable monthly, is equal to 2.5% of total capital contributed by shareholders.  Effective January 1, 2007, the Manager has changed its policy regarding the annual management fee.  Commencing in January 2007, the management fee payable will be equal to 2.5% of the total shareholder capital contributions, net of cumulative dry-hole expenses incurred by the Fund.

On a long-term basis, until one of the Funds projects begins producing, all or a portion of the management fee is paid generally from the interest or dividend income generated by the Funds development capital that has not been spent, although the management fee can be paid out of capital contributions.  Such interest and/or dividend income is more than enough to cover Fund expenses, including the management fee.   Generally, it can take anywhere from 18 to 24 months to bring a project to production. Once a well is on production, the management fee and fund expenses are paid from operating income.  Over time as a well produces the Fund may recover some or the entire management fee that may have been paid out of capital contributions.

Distributions, if any, are funded from cash flow from operations, and the frequency and amount are within the Managers discretion subject to available cash from operations, reserve requirements and Fund operations.

The capital raised by the Fund in its private placement is more than likely all the capital it will be able to obtain for investments in projects. The number of projects in which the Fund can invest will naturally be limited and each unsuccessful project the Fund experiences, if any, will not only reduce its ability to generate revenue, but also exhaust its limited supply of capital. Typically for a fund, the Manager seeks an investment portfolio that combines high and low risk exploratory projects.

When the Manager makes a decision for participation in a particular project, it assumes that the well will be successful and allocates enough capital to budget for the completion of that well and the additional development wells that are anticipated to be drilled. If the exploratory well is deemed a dry-hole or if it is un-economical, the capital allocated to the completion of that well and to the development of additional wells is then reallocated to a new project or used to make additional investments.

Off-Balance Sheet Arrangements

The Fund had no off-balance sheet arrangements as of March 31, 2007 and December 31, 2006 and does not anticipate the use of such arrangements in the future.

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Contractual Obligations

The Fund enters into operating agreements with operators.  On behalf of the Fund, an operator enters into various contractual commitments pertaining to exploration, development and production activities.  The Fund does not discuss or negotiate any such contracts.  No contractual obligations exist at March 31, 2007 and December 31, 2006.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Projects drilled may not have commercially productive oil and natural gas reservoirs. In such an event, the Funds revenue, future results of operations and financial condition would be adversely impacted.

The Fund does not have or use, any derivative instruments nor does it have any plans to enter into such derivative arrangements. The Fund will generally invest cash in high-quality credit instruments consisting primarily of money market funds, bankers acceptance notes and government agency securities with maturities of six months or less. The Fund does not expect any material loss from cash equivalents and therefore believes its potential interest rate exposure is not material. The Fund has no plan to conduct any international activities and therefore believes it is not subject to foreign currency risk.

The principal market risks to which the Fund is exposed that may adversely impact the Funds results of operations and financial position are changes in oil and natural gas prices.

Low commodity prices could have an adverse affect on the Funds future profitability and, in such an event the Fund may be required by accounting rules to write down the carrying value of the Funds projects.  Revenue to the Fund will be sensitive to changes in price to be received for oil and natural gas production. Prevailing market prices fluctuate in response to many factors that are outside of the Funds control such as the supply and demand for oil and natural gas.  Availability of alternative fuels as well as seasonal risks such as hurricanes can also impact the supply and demand.

High oil and natural gas prices have resulted in a strong demand for and a tight supply of drilling rigs necessary to drill new projects. The increased cost in daily rig rates could have a negative impact on the return to shareholders in the Fund. The shortage of drilling rigs could delay the application of capital to such projects and thus delay revenue from operations.

ITEM 4.  CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

The Fund maintains disclosure controls and procedures, as such term is defined under Securities and Exchange Act of 1934 (Exchange Act) Rule 13a-15(e), that are designed to ensure that information required to be disclosed in the Funds Exchange Act reports is recorded, processed, summarized and reported within the same time periods specified in the SECs rules and forms, and that such information is accumulated and communicated to its management, including its Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures. In designing and evaluating the disclosure controls and procedures, the Funds management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives and its management necessarily was required to apply its judgment in eval
uating the cost-benefit relationship of possible controls and procedures. The Fund has carried out an evaluation, as of March 31, 2007, under the supervision and with the participation of its management, including its Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Funds disclosure controls and procedures.  Based upon their evaluation and subject to the foregoing, such procedures were effective.

Because the Fund is not an Accelerated Filer as defined in Rule 12b-2 of the Exchange Act, the Fund is not presently required to file Managements annual report on internal control over financial reporting and the Attestation report of the registered public accounting firm required by Item 308(a) and (b) of Regulation S-K promulgated under the Securities Act.  Under current rules, because the Fund is neither a large accelerated filer nor an accelerated

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filer, the Fund is not required to provide managements report on internal control over financial reporting until the Fund files its annual report for 2007 and compliance with the auditors attestation report requirement is not required until the Fund files its annual report for 2008.  The Fund currently expects to comply with these requirements at such time as the Fund is required to do so.

Changes in Internal Controls over Financial Reporting

The Fund continually reviews its disclosure controls and procedures and makes changes as necessary, to ensure the quality of its financial reporting.  There were no changes in our internal control over financial reporting identified in connection with the evaluation required by paragraph (d) of Exchange Act Rules 13a-15 or 15d-15 that occurred during the quarter ended March 31, 2007 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II.  OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

There have been no changes to the legal proceedings disclosed in the Funds most recent Annual Report on Form 10-K.

ITEM 1A. RISK FACTORS

For information regarding factors that could affect the Funds results of operations, financial condition and liquidity, see risk factors discussed under Managements Discussion and Analysis of Financial Condition and Results of Operations  in Item 7 of the Funds 2006 Annual Report on Form 10-K.  There have been no material changes from the risk factors previously disclosed in the Funds most recent Annual Report on Form 10-K.

ITEM 2.  UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. SUBMISSIONS OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

ITEM 5. OTHER INFORMATION

None.

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ITEM 6. EXHIBITS

|EXHIBIT   NUMBER |  | TITLE OF EXHIBIT                                                                                                                                                                                                                                                      
|---------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                 |  |                                                                                                                                                                                                                                                                       
|10.1             |  | Participation   Agreement between Newfield Exploration Company and Ridgewood Energy Corporation   as Manager for Eugene Island 346/347.                                                                                                                               
|31.1             |  | Certification   of Robert E. Swanson, Chief Executive Officer, pursuant to Securities   Exchange Act Rule 13a-14(a).                                                                                                                                                  
|31.2             |  | Certification   of Kathleen P. McSherry, Chief Financial Officer, pursuant to Securities   Exchange Act Rule 13a-14(a).                                                                                                                                               
|32               |  | Certifications   pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of The   Sarbanes-Oxley Act of 2002, signed by Robert E. Swanson, Chief Executive   Officer of the Company and Kathleen P. McSherry, Chief Financial Officer of   the Company.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|Dated:     May   11, 2007 | RIDGEWOOD   ENERGY O FUND, LLC
|------------------------- | ------------------------------
|                          |                               
|                          | By:                           
|                          |                               
|                          | Name:                         
|                          | Title:                        
|                          |                               
|                          |                               
|Dated:     May   11, 2007 |                               
|                          |                               
|                          | By:                           
|                          |                               
|                          | Name:                         
|                          | Title:                        
|                          |                               

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