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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, 2000Commission 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 10, 2000, there were 1,380 shares of the registrant's common stock outstanding.
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

|MARINER ENERGY, INC.
Form 10-Q
March 31, 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.
                                                    BALANCE SHEETS
                                                    (in thousands)
|----------------------------------------------------------------------------------------------------------------------------------------------------------
|
|
|
|
|ASSETS                                                                                                                                                    
|CURRENT ASSETS:                                                                                                                                           
|Cash and cash equivalents                                                                                                                                 
|Receivables                                                                                                                                               
|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                                                                                                                         
|                                                                                                                                                          
|TOTAL ASSETS                                                                                                                                              
|                                                                                                                                                          
|LIABILITIES AND STOCKHOLDER'S EQUITY                                                                                                                      
|CURRENT LIABILITIES:                                                                                                                                      
|Accounts payable                                                                                                                                          
|Accrued liabilities                                                                                                                                       
|Accrued interest                                                                                                                                          
|Hedge liability                                                                                                                                           
|                                                                                                                                                          
|Total current liabilities                                                                                                                                 
|                                                                                                                                                          
|OTHER LIABILITIES                                                                                                                                         
|HEDGE LIABILITY                                                                                                                                           
|LONG-TERM DEBT:                                                                                                                                           
|Subordinated Notes                                                                                                                                        
|Revolving credit facility                                                                                                                                 
|                                                                                                                                                          
|Total long-term debt                                                                                                                                      
|                                                                                                                                                          
|STOCKHOLDER'S EQUITY:                                                                                                                                     
|Common stock, $1 par value; 2,000 shared 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.
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.
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 (used in) operating activities                                               
|                                                                                                  
|INVESTING ACTIVITIES:                                                                             
|Additions to oil and gas properties                                                               
|Proceeds from property conveyances                                                                
|Additions to other property and equipment                                                         
|                                                                                                  
|Net cash provided by (used in) investing activities                                               
|                                                                                                  
|FINANCING ACTIVITIES:                                                                             
|Net proceeds from (repayment of) revolving credit facility                                        
|Capital contribution by sale of stock to parent                                                   
|                                                                                                  
|Net cash provided by (used in) financing activities                                               
|                                                                                                  
|INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                                                  
|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
Financial Statements

(unaudited)

## 1. BASIS OF
PRESENTATION

The 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 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 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 months ended March 31, 2001
and the cash flows for the three months ended March 31, 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, discounted at 10%, from proved oil and gas reserves
based on period-end prices and costs plus the lower of cost or estimated fair value of unproved properties.

## 3. 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/Loss, a
component of Stockholders' 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 related to accumulated Other Comprehensive Income and adjustments to
carrying amounts on hedged production 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 March 31, 2001:

|                              |       | Price |        
|----------------------------- | ----- | ----- | -------
|
|Natural Gas (MMBtu)           |       |       |        
|March 31 - October 31, 2001   |       |       |        
|Collar purchased              | 2,706 | 3.50  | $  4.92
|Put floor purchased           | 2,706 | 3.50  |        
|Fixed price swap purchased    | 2,331 |       |        
|October 1 - December 31, 2001 |       |       |        
|Fixed price swap purchased    | 774   |       |        
|January 1 - December 31, 2002 |       |       |        
|Fixed price swap purchased    | 1,831 |       |        
|                              |       |       |        
|Total                         |       |       |        
|                              |       |       |        

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 first quarter of 2001, hedging losses of $10.6 million were transferred from other comprehensive loss
to revenue and the fair value of outstanding liabilities decreased $5.5 million. The ineffective portion of the cash
flow hedges were not material for the quarter.

As of March 31, 2001, $16.8 million of deferred losses on derivative instruments were recorded in other
comprehensive income, of which $13.8 million are expected to be reclassed to earnings during the next twelve-month
period.

All hedge transactions are subject to the Company's risk management policy, 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 March 31, 2001, a commodity price increase of 10% would have resulted in an unfavorable
change in fair value of $4.1 million and a commodity price decrease of 10% would have resulted in a favorable change
in fair value of $4.1 million.

## 4. 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.

## 5.
COMPREHENSIVE INCOME

Comprehensive income
includes net income and certain items recorded directly to Shareholders'
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
$5.5 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 comprehensive income for the quarter ended
March 31, 2001:

|                                                                      | Three-months Ended
March 31,(In thousands)
|--------------------------------------------------------------------- | ------------------------------------------
|
|Other comprehensive income - December 31, 2000                        |                                           
|Net income                                                            | $19,403                                   
|                                                                      |                                           
|Other comprehensive loss                                              |                                           
|Cumulative effect of change in accounting principle - January 1, 2001 | (32,976)                                  
|Reclassification adjustment for settled contracts                     | 10,630                                    
|Changes in fair value of outstanding hedging positions                | 5,498                                     
|                                                                      |                                           
|Other comprehensive loss                                              | (16,848)                                  
|Comprehensive income                                                  | $2,555                                    
|                                                                      |                                           
|Other comprehensive loss                                              |                                           
|                                                                      |                                           
|There were no items in Other Comprehensive Income/Loss.               |                                           

## Independent
Accountants' Report

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

We have reviewed the
accompanying balance sheet of Mariner Energy, Inc. as of March 31, 2001 and the
related statements of operations and cash flows for the three-months ended March
31, 2001 and 2000. These 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
consolidated 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
May 11, 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 periods ended March 31, 2001 and 2000 should be read
in conjunction with the 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 Ended
                                                                     March 31,
|---------------------------------- | -------------------------------------------------------------------------------------------------
|
|
|
|Total revenue, $MM                 | $49.9                                                                                            
|EBITDA(1), $MM                     | 39.3                                                                                             
|                                  
|Net  income (loss), $MM            | 19.4                                                                                             
|                                  
|Production:                        |                                                                                                  
|Oil and condensate (Mbbls)         | 785                                                                                              
|Natural Gas (Mmcf)                 | 5,425                                                                                            
|Natural Gas equivalents (Mmcfe)    | 10,135                                                                                           
|                                  
|Average realized sales prices:     |                                                                                                  
|Oil and condensate ($/Bbl)         | $25.17                                                                                           
|Natural Gas ($/Mcf)                | 5.56                                                                                             
|Natural Gas equivalents ($/Mcfe)   | 4.92                                                                                             
|                                  
|Cash Margin(2) per Mcfe:           |                                                                                                  
|Revenue (pre-hedge)                | $5.97                                                                                            
|Hedging impact                     | (1.05)                                                                                           
|Lease operating expenses           | (0.51)                                                                                           
|Transportation                     | (0.34)                                                                                           
|Gross G&A costs                    | (0.42)                                                                                           
|                                   |                                                                                                  
|Cash Margin                        | $3.65                                                                                            
|                                   |                                                                                                  
|Capital Expenditures(3), $MM:      |                                                                                                  
|Exploration:                       |                                                                                                  
|Leasehold and G&G costs            | $(4.1)                                                                                           
|Drilling                           | 14.1                                                                                             
|Development & other                | (18.5)                                                                                           
|Capitalized G&A and interest costs | 3.1                                                                                              
|                                   |                                                                                                  
|Total                              | $ (5.4)                                                                                          
|                                   |                                                                                                  

1. EBITDA equals earnings before interest, income taxes, depreciation, depletion,
and amortization. EBITDA should be used as a supplement to, and not as a
supplement 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 or spent by the company.
3. Net of $39.5 million
of proceeds from property conveyances for the three month period ended March 31,
2001.

## Results of Operations for the First Quarter of 2001

Net
production increased by 13% during the first quarter of 2001, to 10.1
billion cubic feet of natural gas equivalent (Bcfe) from 8.9 Bcfe in the same
period of 2000. The Companys Deepwater Gulf of Mexico production was 8.3
Bcfe in the first quarter of 2000, an increase of 51% compared to the 5.5 Bcfe
produced in the first quarter of 2000, with Black Widow, located in Ewing Banks
966 and Apia, located in Garden Banks 73, accounting for the majority of the
increase. These two projects more than offset anticipated production decline in
shallow water and onshore production, and at the Companys Dulcimer
Deepwater Gulf field, located in Garden Banks 367.

Hedging
activitiesfor the first quarter of 2001 decreased our average realized
natural gas sales price $1.96 per Mcf and revenues by $10.6 million. There were
no oil hedges in place during the first quarter of 2001. Hedging activities for
the first quarter 2000 reduced our average realized natural gas and crude oil
prices by $0.24 per Mcf and $8.14 per Bbl respectively, resulting in reductions
in revenue of $1.6 million and $3.0 million, respectively.

Oil
and gas revenues increased 106% to $49.9 million for the first quarter of
2001 from $24.2 million for the first quarter of 2000, due to a 13% increase in
production and an 82% increase in realized prices, to $4.92 per Mcfe for the
first quarter from $2.71 per Mcfe in the same period of 2000.

Lease
operating expenses increased 22% to $5.1 million for the first quarter of
2001, from $4.2 million for the first quarter of 2000, due to the addition of
two new wells in the Deepwater Gulf of Mexico.

Transportation
expenses increased 278% to $3.5 million for the first quarter of 2001 from
$0.9 million for the same period of 2000. This increase was primarily caused by
the addition of two wells in the Deepwater Gulf of Mexico which are subject to
transportation charges.

Depreciation,
depletion, and amortization expense (DD&A) increased 35% to $17.5
million for the first quarter of 2001 from $12.9 million for the first quarter
of 2000 as a result of the 13% increase in equivalent volumes produced and an
increase in the unit-of-production DD&A rate to $1.73 per Mcfe from $1.45 per Mcfe. The higher rate for the first
quarter of 2001 was primarily due to the occurrence of three dry holes since the
first quarter of 2000 and the timing of proved reserve bookings on several successful projects. The sale of certain properties during the quarter did not
materially impact the rate of DD&A. We expect our DD&A rate to decrease in the second quarter of 2001 as a result of
successful exploratory and development drilling.

General
and administrative expenses,which are net of overhead
reimbursements received from other working interest owners, increased 18% to
$2.0 million for the first quarter of 2001 from $1.7 million for the first
quarter of 2000, due to less overhead reimbursements received during the first
quarter of 2001 as compared to the same period in 2000.

Interest
expense for the first quarter of 2001 decreased 28% to $2.4 million from
$3.4 million in the first quarter of 2000, due to the repayment of the $25
million Senior Credit Facility with proceeds from a capital contribution by the
sale of common stock to Mariner Holdings, Inc.

Net
Incomewas $19.4 million for the first quarter of 2001, as a result of the
oil and gas revenue increase, offset in part by increased expenses as discussed
above.

## Liquidity,
Capital Expenditures and Capital Resources

As
of March 31, 2001, we had a working capital deficit of approximately $16.6
million, compared to a working capital deficit of $15.4 million at December 31,
2000. We expect our 2001 capital expenditures, after proceeds from property conveyances and before indirect costs, to be
approximately $140 million, which would exceed cash flow from operations.
However, we believe there will be adequate cash flow in order for us to fund our
remaining planned activities in 2001. There can be no assurance that our access
to capital will be sufficient to meet our needs for capital. As such, we may be
required to reduce our planned capital expenditures and forego planned
exploratory drilling or monetize portions of our proved reserves or undeveloped
inventory if additional capital resources are not available to us on terms we
consider reasonable.

Net
cash inflow from operating activities was $49.8 million in the first quarter of
2001, an increase of $67.9 million from the same period of 2000. A period to
period increase of approximately $23.1 million in operating cash flow before
changes in operating assets and liabilities was due primarily to higher
production and higher commodity prices. An increase of $44.8 million in net cash
provided by changes in working capital was caused by decreased joint interest
receivables and the timing of payments made on accounts payable.

Net
cash inflow from investing activities in the first three months of 2001
increased to $5.4 million from a cash outflow of $18.8 million for the same
period in 2000 due primarily to proceeds from property conveyances of $39.5
million in the first quarter of 2001.

Cash
used in financing activities was $30.0 million for the first three months of
2001 compared to cash provided of $36.8 million for the same period in 2000. Our
primary use of cash for the first three months of 2001 was $30.0 million of
payments on our 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.

|                                                                            | Three-months Ended
                                                                     March 31,
|--------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------
|
|
|
|Decrease in natural gas sales (in thousands)                                | $(10,630)                                                                                        
|Decrease in oil sales (in thousands)                                        | --                                                                                               
|Effect of hedging transactions on average natural gas sales price (per Mcf) | (1.96)                                                                                           
|Effect of hedging transactions on average oil sales price (per Bbl)         | --                                                                                               

A
table setting forth our open hedging positions as of March 31, 2001 is contained
in the "Commitments and Contingencies" footnote to the financial
statements in Part I, Item 1. of this report.

Hedging
arrangements for 2001 cover approximately 36% of our anticipated equivalent
production for the year. Hedging arrangements for 2002 cover approximately 4% of
our anticipated equivalent production for that year.

Capital
expenditures for the first three months of 2001 were a net credit of $5.4
million including $3.1 million of capitalized general, administrative and
interest costs and a reduction of $39.5 million for proceeds received from
property conveyances. Net capital expenditures included $10.0 million for
exploration activities and $18.5 million for development and other activities.

During
the remainder of 2001, we expect to conduct drilling operations on four to seven
exploratory wells, all in the Deepwater Gulf, making additions to our 3-D
seismic database as well as adding to our deepwater leasehold position. The
development budget includes completing the King Kong Deepwater gulf exploitation
project, development of the Aconcagua discovery and drilling several development
wells in currently producing fields.

Long-term
debt outstanding as of March 31, 2001 was approximately $99.7 million for our
senior subordinated notes.

There
can be no assurance that funds available to us under the Revolving Credit
Facility will be sufficient for us to fund our currently planned capital
expenditures. We may be required to reduce our planned capital expenditures and
forego planned exploratory drilling or to monetize portions of our proved
reserves or undeveloped inventory if additional capital resources are not
available to us on terms we consider reasonable.

We
believe there will be adequate cash flow in order for us to fund our remaining
planned activities in 2001. Our capital resources still may not be sufficient to
meet our anticipated future requirements for working capital, capital
expenditures and scheduled payments of principal and interest on our
indebtedness. There can be no assurance that anticipated growth will be
realized, that our business will generate sufficient cash flow from operations
or that future borrowings or equity capital will be available in an amount
sufficient to enable us to service our indebtedness or make necessary capital
expenditures. 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)   The following exhibits are filed herewith.

27.1 Financial Data Schedule

(b)   The Company filed no Current Reports on Form 8-K during the quarter ended March 31, 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: May 14, 2001 | /s/ Frank A. Pici                                                                                                                                                
|                   |                                                                                                                                                                  
|                   | Frank A. Pici
Vice President of Finance and
Chief Financial Officer
(Principal Financial Officer and
Officer Duly Authorized to Sign
on Behalf of the Registrant)