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|UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549FORM 10-QQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 
SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2001Commission file number 333-12707Mariner Energy, Inc.(Exact name of registrant as specified in its charter)Internal Revenue Service - Employer Identification No. 86-0460233
State of other jurisdiction of incorporation or organization - Delaware580 WestLake Park Blvd., Suite 1300
Houston, Texas 77079
(Address of principal executive offices including Zip Code)(281) 584-5500
(Registrant's telephone number)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 requirement for the past 90
days. Yes [ ]   No [X]

Note: The Company is not subject to the filing requirements of the Securities Exchange Act of 1934. This
quarterly report is filed pursuant to contractual obligations imposed on the Company by an Indenture, dated as
of August 1, 1996, under which the Company is the issuer of certain debt.


As of November 2, 2001, there were 1,380 shares of the registrant's common stock outstanding.
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

|MARINER ENERGY, INC.
Form 10-Q
September 30, 2001

TABLE OF CONTENTS
|--------------------------------------------------------------------
|
|PART I - FINANCIAL INFORMATION                                      
|Item 1.                                                             
|                                                                    
|                                                                    
|                                                                    
|                                                                    
|Item 2.                                                             
|Item 3.                                                             
|PART II - OTHER INFORMATION                                         
|Item 1.                                                             
|Item 2.                                                             
|Item 3.                                                             
|Item 4.                                                             
|Item 5.                                                             
|Item 6.                                                             
|SIGNATURE                                                           

Part I, Item 1.

|MARINER ENERGY, INC.
CONDENSED BALANCE SHEETS
(in thousands)                         
|-------------------------------------------------------------------------------------
|
|
|
|
|ASSETS                                                                               
|CURRENT ASSETS:                                                                      
|Cash and cash equivalents                                                            
|Receivables                                                                          
|Hedge receivable                                                                     
|Prepaid expenses and other                                                           
|                                                                                     
|Total current assets                                                                 
|                                                                                     
|PROPERTY AND EQUIPMENT:                                                              
|Oil and gas properties, at full cost:                                                
|Proved                                                                               
|Unproved, not subject to amortization                                                
|                                                                                     
|Total                                                                                
|Other property and equipment                                                         
|Accumulated depreciation, depletion and amortization                                 
|                                                                                     
|Total property and equipment, net                                                    
|OTHER ASSETS, Net of amortization                                                    
|                                                                                     
|HEDGE RECEIVABLE                                                                     
|                                                                                     
|TOTAL ASSETS                                                                         
|                                                                                     
|LIABILITIES AND STOCKHOLDER'S EQUITY                                                 
|CURRENT LIABILITIES:                                                                 
|Accounts payable                                                                     
|Accrued liabilities                                                                  
|Accrued interest                                                                     
|                                                                                     
|Total current liabilities                                                            
|OTHER LIABILITIES                                                                    
|LONG-TERM DEBT:                                                                      
|Revolving credit facility                                                            
|Senior Subordinated Notes                                                            
|                                                                                     
|Total long-term debt                                                                 
|                                                                                     
|STOCKHOLDER'S EQUITY:                                                                
|Common stock, $1 par value; 2,000 shares authorized,
    1,380 issued and outstanding
|Additional paid-in-capital                                                           
|Other comprehensive income                                                           
|Accumulated deficit                                                                  
|                                                                                     
|Total stockholder's equity                                                           
|                                                                                     
|TOTAL LIABILITIES AND STOCKHOLDER'S EQUITY                                           
|                                                                                     

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

|MARINER ENERGY, INC.
CONDENSED STATEMENTS OF OPERATIONS
(Unaudited, in thousands)
|---------------------------------------------------------------------------------
|
|
|
|
|REVENUES:                                                                        
|Oil sales                                                                        
|Gas sales                                                                        
|
|Total revenues                                                                   
|
|COSTS AND EXPENSES:                                                              
|Lease operating expenses                                                         
|Transportation                                                                   
|Depreciation, depletion and amortization                                         
|General and administrative expenses                                              
|
|Total costs and expenses                                                         
|
|OPERATING INCOME                                                                 
|INTEREST:                                                                        
|Income                                                                           
|Expense                                                                          
|
|INCOME BEFORE TAXES                                                              
|PROVISION FOR INCOME TAXES                                                       
|
|NET INCOME                                                                       
|

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

|MARINER ENERGY, INC.
CONDENSED STATEMENTS OF CASH FLOWS
(unaudited, in thousands)                 
|--------------------------------------------------------------------------------------------------
|
|
|
|
|OPERATING ACTIVITIES:                                                                             
|Net Income                                                                                        
|Adjustments to reconcile net income to
       net cash provided by (used in) operating activities:
|Depreciation, depletion and amortization                                                          
|Changes in operating assets and liabilities:                                                      
|Receivables                                                                                       
|Other current assets                                                                              
|Other assets                                                                                      
|Accounts payable and accrued liabilities                                                          
|                                                                                                  
|Net cash provided by operating activities                                                         
|                                                                                                  
|INVESTING ACTIVITIES:                                                                             
|Additions to oil and gas properties                                                               
|Proceeds from property conveyances                                                                
|Additions to other property and equipment                                                         
|                                                                                                  
|Net cash used in investing activities                                                             
|                                                                                                  
|FINANCING ACTIVITIES:                                                                             
|Payments to revolving credit facility                                                             
|Capital contribution from parent                                                                  
|Payments to senior credit facility                                                                
|                                                                                                  
|Net cash provided (used by) by financing activities                                               
|                                                                                                  
|INCREASE (DECREASE) IN CASH AND CASH EQUIV.                                                       
|CASH AND CASH EQUIV. AT BEGINNING OF PERIOD                                                       
|                                                                                                  
|CASH AND CASH  EQUIV. AT END OF PERIOD                                                            
|                                                                                                  

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

# MARINER
ENERGY, INC.

# Notes to
Condensed Financial Statements

# (unaudited)

## 1.      BASIS OF
PRESENTATION

The condensed financial statements of Mariner Energy, Inc. (the "Company") included herein have been prepared, without audit,
pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC").  Accordingly, they reflect all adjustments
(consisting only of normal, recurring accruals) which are, in the opinion of management, necessary for a fair presentation of the
financial results for the interim periods.  Certain information and notes normally included in condensed financial statements
prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted
pursuant to such rules and regulations, although the Company believes that the disclosures are adequate to make the information
presented not misleading.  These condensed financial statements should be read in conjunction with the financial statements
and notes thereto included in the Company's Form 10-K for the year ended December 31, 2000.  The results of operations for the three
and nine-months ended September 30, 2001 and the cash flows for the nine-months ended September 30, 2001 are not necessarily
indicative of the results for the full year.

## 2.      OIL AND GAS
PROPERTIES

Under the full cost method of accounting for oil and gas properties, the net carrying value of proved oil and gas properties is
limited to an estimate of the future net revenues, plus the lower of cost or estimated fair value of unproved properties discounted
at 10%, from proved oil and gas reserves based on period-end prices and costs. Based on prices including hedging activities in effect
on September 30, 2001 the Company would have had a non-cash ceiling test charge to earnings of approximately $60 million.  However
prices including hedging activities recovered significantly subsequent to September 30, 2001; and therefore as allowed by full cost
accounting rules, no charge to earnings is deemed necessary at this time.

On November 1, 2001 the Company sold its remaining interest in the Aconcagua field and related Canyon Express Pipeline System for
$51 million.  As a result of this sale, the Company's borrowing base under the Revolving Credit Facility was reduced from $80 million to $65 million.

## 3.      RELATED
PARTY TRANSACTIONS

Currently all of the Company's hedge positions are with Enron North America (ENA).  In addition for the nine-months ending
September 30, 2001 the Company has sold approximately 38% of its production to Enron North America or its affiliates.  Related
accounts receivables for production sold to ENA or its affiliates were $2.7 million at September 30, 2001. Production sales contracts
are generally cancellable within three months.  In the third quarter the Board of Directors approved a Service Agreement which allows
ENA to be reimbursed for certain administrative functions provided on the Company's behalf.

## 4.      HEDGING PROGRAM

On January 1, 2001, the Company adopted SFAS 133 "Accounting for Derivative Instruments and Hedging Activities" as amended by
SFAS 137 and SFAS 138. Under SFAS 133, all derivative instruments are recorded on the balance sheet at fair value. If the derivative
does not qualify as a hedge or is not designated as a hedge, the gain or loss on the derivative is recognized currently in earnings.
To qualify for hedge accounting, the derivative must qualify either as a fair value hedge, cash flow hedge or foreign currency
hedge.  Currently, the Company uses only cash flow hedges and the remaining discussion will relate exclusively to this type of
derivative instrument.  If the derivative qualifies for hedge accounting, the gain or loss on the derivative is deferred in Other
Comprehensive Income, a component of Stockholder's Equity, to the extent the hedge is effective.

The relationship between the hedging instrument and the hedged item must be highly effective in achieving the offset of changes
in cash flows attributable to the hedged risk both at the inception of the contract and on an ongoing basis.  The Company measures
effectiveness on a period basis.  Hedge accounting is discontinued prospectively when a hedge instrument becomes ineffective.  Gains
and losses deferred in accumulated Other Comprehensive Income related to cash flow hedges that become ineffective remain unchanged
until the related production is delivered.  If the Company determines that it is probable that a hedged forecasted transaction will
not occur, deferred gains or losses on the hedging instrument are recognized in earnings immediately.

Gains and losses on hedging instruments when settled are included in natural gas or crude oil production revenues in the period
that the related production is delivered.

The following table sets forth the Company's position as of September 30, 2001:

|Time Period                   | NotionalQuantities | Fixed Price | Fair Value(in millions)
|----------------------------- | ------------------ | ----------- | -----------------------
|Natural Gas                   | (MMBtu)            |             |                        
|October 1 - December 31, 2001 |                    |             |                        
|Fixed price swap purchased    | 774                | $2.18       | 0.0                    
|Fixed price swap purchased    | 3,218              | 4.43        | 7.1                    
|January 1 - December 31, 2002 |                    |             |                        
|Fixed price swap purchased    | 1,831              | 2.18        | (1.2)                  
|Fixed price swap purchased    | 12,134             | 4.43        | 18.5                   
|January 1 - December 31, 2003 |                    |             |                        
|Fixed price swap purchased    | 3,650              | 3.74        | 2.0                    
|Crude Oil                     | (MBbl)             |             |                        
|October 1 - December 31, 2001 |                    |             |                        
|Fixed price swap purchased    | 245                | $ 27.75     | 0.8                    
|Fixed price swap purchased    | 92                 | 25.15       | 0.1                    
|January 1 - December 31, 2002 |                    |             |                        
|Fixed price swap purchased    | 365                | 25.48       | 0.7                    
|Fixed price swap purchased    | 181                | 25.15       | 0.3                    
|Total                         |                    |             | $ 28.3                 
|                              |                    |             |                        

Subsequent to September 30, 2001 the Company entered into a $3.03 average natural gas fixed prices swap for a notional quantity
of 4,125 Mmbtu.  The term of the agreement begins April 1, 2002 and ends December 31, 2002.

On January 1, 2001, in accordance with the transition provisions of SFAS 133, the Company recorded $32.9 million in other
comprehensive loss representing the cumulative effect of an accounting change to recognize at fair value all cash flow derivatives.
The Company recorded cash flow hedge derivative liabilities of $32.9 million on that date.  There is no tax effect on the cumulative
effect.

During the nine-months of 2001, settled hedging losses of $11.6 million were reclassed from Other Comprehensive Income to
Revenue. As of September 30, 2001, the fair value of outstanding hedges was recorded as a deferred gain of $28.2 million in Other
Comprehensive Income. As of September 30, 2001, the ineffective portion of the cash flow hedges were not material for the quarter.

All hedge transactions are conducted pursuant to the Company's existing hedging policy or are approved by the Board of Directors,
which does not permit speculative positions. The Company formally documents all relationships between hedging instruments and hedged
items, as well as its risk management objectives and strategy for undertaking the hedge.  This process includes specific
identification of the hedging instrument and the hedge transaction, the nature of the risk being hedged and how the hedging
instrument's effectiveness will be assessed.  Both at the inception of the hedge and on an ongoing basis, the Company assesses
whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged
items.

The fair value of our hedging instruments was determined based on a broker's forward price quote and a NYMEX forward price
quote.  As of September 30, 2001, a commodity price increase of 10% would have resulted in an unfavorable change in fair value of
$8.2 million and a commodity price decrease of 10% would have resulted in a favorable change in fair value of $8.2 million.

## 5.      COMMITMENTS
AND CONTINGENCIES

Litigation -The Company, in the ordinary course of business, is a claimant and/or a defendant in various legal proceedings,
including proceedings as to which the Company has insurance coverage.  The Company does not consider its exposure in these
proceedings, individually and in the aggregate, to be material.

## 6.      EMPLOYEE
REDUCTIONS

During the third quarter, the Company reduced the number of employees at various levels. Severance and contract termination
payments totaling $2.7 million were made as a result of these reductions.

## 7.      OTHER
COMPREHENSIVE INCOME

Other Comprehensive Income includes net income and certain items recorded directly to Stockholder's Equity and classified as
Other Comprehensive Income.  The Company recorded Other Comprehensive Income for the first time in the first quarter of 2001.
Following the adoption of SFAS 133, the Company recorded an Other Comprehensive Income of $28.2 million related to the change in fair
value of certain derivative financial instruments that has qualified for cash flow hedge accounting.  The following table illustrates
the calculation of Other Comprehensive Income:

|                                                      | Three-Months Ended
September 30, 2001(In thousands)
|----------------------------------------------------- | ---------------------------------------------------
|
|
|Other comprehensive income - June 30, 2001            |                                                    
|Net income                                            | $5,780                                             
|                                                      |                                                    
|Other comprehensive loss                              |                                                    
|Reclassification adjustment for settled contracts     | (2,557)                                            
|Changes in fair value of outstanding hedged positions | 18,655                                             
|                                                      |                                                    
|Other comprehensive loss                              | 16,098                                             
|                                                      |                                                    
|Comprehensive income                                  | $21,878                                            
|                                                      |                                                    
|Other comprehensive loss                              |                                                    
|                                                      |                                                    

|                                                                      | Nine-Months Ended
September 30, 2001(In thousands)
|--------------------------------------------------------------------- | --------------------------------------------------
|
|
|Other comprehensive income - December 31, 2000                        |                                                   
|Net income                                                            | $37,724                                           
|                                                                      |                                                   
|Other comprehensive loss                                              |                                                   
|Cumulative effect of change in accounting principle - January 1, 2001 | (32,976)                                          
|Reclassification adjustment for settled contracts                     | 11,587                                            
|Changes in fair value of outstanding hedged positions                 | 49,598                                            
|                                                                      |                                                   
|Other comprehensive loss                                              | 28,209                                            
|                                                                      |                                                   
|Comprehensive income                                                  | $65,942                                           
|                                                                      |                                                   
|Other comprehensive loss                                              |                                                   
|                                                                      |                                                   

There were no items in Other Comprehensive Income other than the Company's hedging activity.

## 8.      RECENT
ACCOUNTING PRONOUNCEMENTS

In July 2001, the Financial Accounting Standards Board issued SFAS No. 141, "Business Combinations" (effective July 1, 2001)
and SFAS No. 142, "Goodwill and Other Intangible Assets" (effective on January 1, 2002).  SFAS No. 141 prohibits pooling-of-interests
accounting for acquisitions.  SFAS No. 142 specifies that goodwill and some intangible assets will no longer be amortized but instead
will be subject to periodic impairment testing.  We do not believe the adoption of this statement will have an impact on our
financial statements.

In August and October 2001, the FASB issued SFAS No. 143, "Accounting for Asset Retirement Obligations" and SFAS No. 144,
"Accounting for Impairment or Disposal of Long-Lived Assets".  SFAS 143 requires entities to record the fair value of a liability for
an asset retirement obligation in the period in which it is incurred and a corresponding increase in the carrying amount of the
related long-lived asset.  Subsequently, the asset retirement costs should be allocated to expense using a systematic and rational
method. SFAS 143 is effective for fiscal years beginning after June 15, 2002.  SFAS 144 addresses financial accounting and reporting
for the impairment of long-lived assets and for long-lived assets to be disposed of.  It supersedes, with exceptions, SFAS 121,
"Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed of", and is effective for fiscal years
beginning after December 15, 2001.  The company is currently assessing the impact of SFAS No. 143 and No. 144 and therefore cannot
reasonably estimate the impact, if any, these statements will have on its financial statements upon adoption.

## Independent
Accountants Report

Board of Directors and Stockholder
Mariner Energy, Inc.
Houston, Texas

We have reviewed the
accompanying condensed balance sheet of Mariner Energy, Inc. as of September 30,
2001 and the related condensed statements of operations for the three-month and
nine-month periods ended September 30, 2001 and 2000 and the related condensed
statements of cash flows for the nine-month periods ended September 30, 2001 and
2000. These condensed financial statements are the responsibility of the
Companys management.

We conducted our review in
accordance with standards established by the American Institute of Certified
Public Accountants. A review of interim financial information consists primarily
of applying analytical procedures to financial data and making inquiries of
persons responsible for financial and accounting matters. It is substantially
less in scope than an audit conducted in accordance with auditing standards
generally accepted in the United States of America, the objective of which is
the expression of an opinion regarding the financial statements taken as a
whole. Accordingly, we do not express such an opinion.

Based on our review, we are
not aware of any material modifications that should be made to the accompanying
condensed financial statements for them to be in conformity with accounting
principles generally accepted in the United States of America.

We have previously audited,
in accordance with auditing standards generally accepted in the United Sates of
America, the balance sheet as of December 31, 2000, and the related statements
of operations, stockholders equity, and cash flows for the year ended
December 31, 2000 (not presented herein), and in our report dated April 2, 2001,
we expressed an unqualified opinion on those financial statements. In our
opinion, the information set forth in the accompanying balance sheet as of
December 31, 2000 is fairly stated, in all material respects, in relation to the
balance sheet from which it has been derived.

/s/ DELOITTE & TOUCHE LLP

## DELOITTE &
TOUCHE LLP

Houston, Texas
November 13, 2001

# Part I, Item 2. Management's Discussion and Analysis of Financial Condition and Results of
Operations.

The following review of operations for the three-month and nine-month periods ended September 30, 2001 and 2000 should be
read in conjunction with the condensed financial statements of the Company and Notes thereto included elsewhere in this Form 10-Q and
with the Financial Statements, Notes, and Management's Discussion and Analysis of Financial Condition and Results of Operations
included in the Company's Annual Report on Form 10-K for the year ended December 31, 2000, filed with the Securities and Exchange
Commission on April 2, 2001.

## Information
Regarding Forward Looking Statements

All statements other than statements of historical fact included in this quarterly report on Form 10-Q, including, without
limitation, statements contained in this "Management's Discussion and Analysis of Financial Condition and Results of Operations"
regarding the Company's financial position, business strategy, plans and objectives of management of the Company for future
operations, and industry conditions, are forward-looking statements.  Although the Company believes that the expectations reflected
in such forward-looking statements are reasonable, it can give no assurance that such expectations will prove to have been correct,
and actual results could differ materially from the Company's expectations.  Factors that could influence these results include, but
are not limited to, oil and gas price volatility, results of future drilling, availability of drilling rigs, future production and
costs, capital resources, liquidity and other factors described in the Company's annual report on Form 10-K for the year ended
December 31, 2000, filed with the Securities and Exchange Commission on April 2, 2001.

## Results of
Operations

The following table sets
forth certain information regarding results of operations for the periods shown:

|                                   | Three-Months EndedSeptember 30 | Nine-Months EndedSeptember 30
|---------------------------------- | ------------------------------ | -----------------------------
|
|
|
|Total revenue, $MM                 | $35.1                          | $27.6                        
|EBITDA(1), $MM                     | 23.3                           | 19.6                         
|Net  income, $MM                   | 5.8                            | 4.3                          
|Production::                       |                                |                              
|Oil and condensate (Mbbls)         | 738                            | 314                          
|Natural Gas (Mmcf)                 | 4,360                          | 6,602                        
|Natural Gas equivalents (Mmcfe)    | 8,788                          | 8,486                        
|Average realized sales prices::    |                                |                              
|Oil and condensate ($/Bbl)         | $24.43                         | $18.99                       
|Natural Gas ($/Mcf)                | 3.91                           | 3.28                         
|Natural Gas equivalents ($/Mcfe)   | 3.99                           | 3.26                         
|Cash Margin(2) per Mcfe:           |                                |                              
|Revenue (pre-hedge)                | $3.70                          | $4.55                        
|Hedging impact                     | 0.29                           | (1.29)                       
|Lease operating expenses           | (0.56)                         | (0.52)                       
|Transportation                     | (0.28)                         | (0.27)                       
|Gross G&A costs                    | (0.73)                         | (0.34)                       
|                                   |                                |                              
|Cash Margin                        | $2.42                          | $2.13                        
|                                   |                                |                              
|Capital Expenditures(3), $MM:      |                                |                              
|Exploration:                       |                                |                              
|Leasehold and G&G costs            | $1.8                           | $12.0                        
|Drilling                           | 6.7                            | 9.3                          
|Development & other                | 34.4                           | 6.0                          
|Capitalized G&A and interest costs | 2.6                            | 2.3                          
|                                   |                                |                              
|Total                              | $45.5                          | $29.6                        
|                                   |                                |                              

1. EBITDA equals earnings before interest, income taxes, depreciation, depletion, and amortization. EBITDA should be used as a
       supplement to, and not as a replacement for, net earnings and cash provided by operating activities (as disclosed in the
       financial statements) in analyzing the Company's results of operations and liquidity..
2. Cash margin measures the net cash generated by a company's operations during a given period, without regard to the period such
       cash is physically received and / or spent by the company.
3. Net of  $39.5 million and $29.0 million of proceeds from property conveyances for the nine-month period ended September 30, 2001 and 2000, respectively.  There were no
       conveyances made during the third quarter 2001.

## Results of Operations for the Third Quarter of 2001

Net productionduring the third quarter of 2001 was 8.8 billion cubic feet of natural gas equivalent (Bcfe) compared to
8.5 Bcfe during the same quarter of 2000.

Hedging activitiesfor the third quarter of 2001 increased our average realized natural gas and crude oil sales prices received by
$0.55 per Mcf and $0.19 per Bbl and revenues by $2.4 million and $0.2 million, respectively. Hedging activities for the third quarter
2000 reduced our average realized natural gas and crude oil prices by $1.10 per Mcf and $11.85 per Bbl, resulting in reductions in
revenue of $7.3 million and $3.7 million, respectively.

Oil and gas revenuesincreased 27% to $35.1 million for the third quarter of 2001 from $27.6 million for the third quarter of
2000.  The revenue increase reflected a 22% increase in realized prices, to $3.99 per Mcfe for the third quarter from $3.26 per Mcfe
in the same period of 2000, in addition to an increase in production.

Lease operating expensesincreased 13% to $5.0 million for the third quarter of 2001, from $4.4 million for the third quarter of
2000, due to the addition of our Black Widow field located in Ewing Bank 966.

Transportation expensesincreased 11% to $2.5 million for the third quarter of 2001, from $2.3 million for the third quarter of
2000, due to the addition of our Black Widow field located in Ewing Bank 966.

Depreciation, depletion, and amortization expense (DD&A)increased 22% to $15.6 million for the third quarter of 2001 from $12.8
million for the third quarter of 2000, as a result of an increase in the unit-of-production depreciation, depletion, and amortization
rate to $1.78 per Mcfe from $1.51 per Mcfe.

General and administrative expenses, which are net of overhead reimbursements received by us from other working interest owners,
increased 220% to $4.3 million for the third quarter of 2001 from $1.4 million for the third quarter of 2000, due primarily to
payments made to terminated employees.

Interest expensefor the third quarter of 2001 decreased 16% to $2.2 million from $2.6 million in the third quarter of 2000, due
to the repayment of our revolving credit facility with proceeds from the sale of our Devils Tower field.

Income before income taxeswas $5.8 million for the third quarter of 2001 compared to $4.3 million in the third quarter of 2000.

## Results of Operations for the First Nine Months of 2001

Net production was 29.0 Bcfe for the first nine months of 2001 compared to 28.4 Bcfe for the same period of 2000. Total production
for the full year of 2001 is expected to be approximately 36 Bcfe.

Oil and gas revenuesincreased 42% to $126.8 million for the first nine months of 2001 from $89.1 million for the comparable
period of 2000, primarily due to a 39% increase in realized prices to $4.38 per Mcfe in the first nine months of 2001 from $3.13 per
Mcfe in the same period last year, and the production increases.

Hedging activitiesfor the first nine months of 2001 decreased our average realized natural gas sales price and increased our
realized crude oil price received by $0.77 per Mcf and $0.07 per Bbl and revenues by $11.8 million and $0.2 million, respectively.
Hedging activities for the first nine months of 2000 reduced our average realized natural gas and crude oil prices by $0.63 per Mcf
and $8.66 per Bbl, resulting in reductions in revenue of $13.7 million and $9.9 million, respectively.

Lease operating expensesincreased 19% to $15.4 million for the first nine months of 2001, from $12.9 million for the comparable
period of 2000, primarily due to the addition of our Black Widow field in Ewing Bank 966.

Transportation expensesincreased 83% to $9.9 million for the first nine months of 2001, from $5.4 million for the same period of
2000, due to the addition of our Black Widow field located in Ewing Bank 966 and a loss related to minimum gathering charges at our
Pluto field.

Depreciation, depletion, and amortization expense (DD&A)increased 19% to $49.8 million for the first nine months of 2001 from
$41.7 million for the comparable period of 2000, as a result of the increase in the unit-of-production depreciation, depletion, and
amortization rate to $1.72 per Mcfe from $1.47 per Mcfe.

General and administrative expenses,which are net of overhead reimbursements received by us from other working interest owners,
increased 74% to $8.0 million for the first nine months of 2001 from $4.6 million for the comparable period of 2000, due primarily to
payments made to terminated employees.

Interest expensefor the first nine months of 2001 decreased 25% to $6.6 million from $8.8 million for the comparable period of
2000, primarily due to the repayment of our revolving credit agreement with proceeds from the sale of our Devils Tower field.

Income (loss) before income taxeswas $37.7 million income for the first nine months of 2001 compared to $15.7 million for the
same period of 2000.

## Liquidity, Capital Expenditures and Capital Resources

As of September 30, 2001, we had a working capital deficit of approximately $23.6 million, compared to a working capital deficit
of $24.5 million at December 31, 2000. Debt outstanding as of September 30, 2001 was approximately $99.8 million of senior subordinated notes. Following the sale of our Aconcagua
field our borrowing base under the Revolving Credit Facility was decreased from $80 million to $65 million. As of September 30, 2001
we had no borrowings under the Revolving Credit Facility.

Net cash provided by operating activities was $118.9 million in the first nine months of 2001, an increase of $82.3 million from
the same period of 2000.  This increase was attributable to an approximately $30.0 million increase in operating cash flow before
changes in operating assets and liabilities due to higher production and higher commodity prices and an increase of $52.0 million in
net cash caused by changes in working capital.

Cash used in investing activities in the first nine months of 2001 increased to $89.4 million from $54.6 million for the same
period in 2000 due primarily to higher exploration expenditures.

Cash used by financing activities was $30 million for the first nine months of 2001 compared to cash provided of $22.4 million for
the same period in 2000.  In addition to cash from operating activities, for the first nine months of 2001 we received $39.5 million
in proceeds from property conveyances, which was used to repay our $30 million Revolving Credit Facility.

The energy markets have historically been very volatile, and there can be no assurance that oil and natural gas prices will not be
subject to wide fluctuations in the future.  To reduce the effects of the volatility of the price of oil and natural gas on our
operating cash flow, management has adopted a policy of hedging oil and natural gas prices from time to time through the use of
commodity futures, options and swap agreements. While the use of these hedging arrangements limits the downside risk of adverse price
movements, it may also limit future gains from favorable movements.

The following table sets forth the increase (decrease) in our oil and natural gas sales as a result of hedging transactions and
the effects of hedging transactions on prices during the periods indicated.

|                                                                            | Nine-Months Ended
September 30,
|--------------------------------------------------------------------------- | -------------------------------
|
|
|
|Decrease in natural gas sales (in thousands)                                | $(11,750)                      
|Decrease in oil sales (in thousands)                                        | 162                            
|Effect of hedging transactions on average natural gas sales price (per Mcf) | (0.77)                         
|Effect of hedging transactions on average oil sales price (per Bbl)         | 0.07                           

A table setting forth our open hedging positions as of September 30, 2001 is contained in footnote 4, "Hedging Program" of the
condensed financial statements.

Hedging
arrangements for 2001 including hedges entered into after September 30, 2001,
cover approximately 62% of our anticipated equivalent production for the year.
Hedging arrangements for 2002 and 2003 cover approximately 52% and 5% of our
anticipated equivalent production for those years, respectively.

Based on prices including hedging activities in effect
on September 30, 2001 the Company would have had a non-cash ceiling test charge to earnings of approximately $60 million.  However
prices including hedging activities recovered significantly subsequent to September 30, 2001; and therefore as allowed by full cost
accounting rules, no charge to earnings is deemed necessary at this time.

Capital
expenditures for the first nine months of 2001 were $89.4 million including $8.4
million of capitalized general, administrative and interest costs and a
deduction of $39.5 million for proceeds received from property conveyances,
which was allocated to development expenditures. Fourth quarter capital
expenditures are expected to be approximately $52 million before crediting the
$51 million in proceeds received from sale of the Companys interest in the
Aconcagua field and related Canyon Express Pipeline System. Exploration and
development capital expenditures are expected to be approximately $19 million
and $33 million, respectively. The Company anticipates drilling two or more
exploratory wells in the fourth quarter.

On August 22, 2001 we were the apparent high bidder on 13 blocks offered in the Western Gulf of Mexico Lease Sale Number 180. All of
these leases have subsequently been officially awarded by the MMS.

We
believe there will be adequate capital resources in order for us to fund our
remaining planned activities in 2001. As an oil and gas producer, our revenue, profitability and future rate of growth are substantially dependent upon prevailing prices
for natural gas, oil and condensate, which are dependent upon numerous factors beyond our control, such as economic, political and
regulatory developments and competition from other sources of energy.  The energy markets have historically been very volatile, and
there can be no assurance that oil and gas prices will not be subject to wide fluctuations in the future.  A substantial or extended
decline in oil and gas prices could have a material adverse effect on our financial position, results of operations, cash flows and
access to capital and on the quantities of oil and gas reserves that may be economically produced.In addition, depending on the levels of our
cash flow and capital expenditures (the latter of which are, to a large extent,
discretionary), we may need to refinance a portion of the principal amount of
our senior subordinated debt at or prior to maturity. However, there can be no
assurance that we would be able to obtain financing on acceptable terms to
complete a refinancing.

## Part I, Item 3. Quantitative and Qualitative Disclosures about Market Risk.

See Part I, Item 2. "Management's Discussion and Analysis of Financial Condition and Results of Operations".

## Part II. Other
Information

Item 1. Legal Proceedings

None.

Item 2. Changes in Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Submission of Matters to a Vote of Security Holders

None.

Item 5. Other Information

None.

Item 6. Exhibits and Reports on Form 8-K

(a) None.

(b) The Company filed no Current Reports on Form 8-K during the quarter ended September 30, 2001.

# SIGNATURE

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

|                        | MARINER ENERGY, INC.                                                                                                                                       
|----------------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------
|Date: November 13, 2001 | /s/ Michael A. Wichterich                                                                                                                                  
|                        |                                                                                                                                                            
|                        | Michael A. WichterichVice President of Financeand Administration(Principal Financial Officer andOfficer Duly Authorized to Signon Behalf of the Registrant)