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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 WASHINGTON, D.C. 20549
 FORM 8-K
 CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
 Date of Report (date of earliest event reported): August 24, 2007
 MARINER ENERGY, INC.
  Delaware
(State or other jurisdiction of 
incorporation)
    
    1-32747
(Commission
File Number)
    
    86-0460233
(I.R.S. Employer
Identification No.)
 One BriarLake Plaza, Suite 2000
2000 West Sam Houston Parkway SouthHouston, Texas
(Address of principal executive offices)
    
    77042
(Zip Code)
 (713) 954-5500
  
   o
    
    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
 o
    
    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
 o
    
    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
 o
    
    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))




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Item 1.01 Entry into a Material Definitive Agreement, and Item 2.03 Creation of a Direct
Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.
    Item 9.01 Financial Statements and Exhibits
 (d)
    
    Exhibits.
 No.
    
    Description4.1
    
    
    Amendment No. 4, dated as of August 24, 2007, among
Mariner Energy, Inc. and Mariner Energy Resources,
Inc., as Borrowers, the Lenders (as defined in the
Amended and Restated Credit Agreement, dated as of
March 2, 2006, among Mariner Energy, Inc. and Mariner
Energy Resources, Inc., as Borrowers, the Lenders
party thereto from time to time, as Lenders, and
Union Bank of California, N.A., as Administrative
Agent and as Issuing Lender), and Union Bank of
California, N.A., as Administrative Agent for such
Lenders and as Issuing Lender for such Lenders.4.2*
    
    
    Amended and Restated Credit Agreement, dated as of
March 2, 2006, among Mariner Energy, Inc. and Mariner
Energy Resources, Inc., as Borrowers, the Lenders
party thereto from time to time, as Lenders, and
Union Bank of California, N.A., as Administrative
Agent and as Issuing Lender (incorporated by
reference to Exhibit 4.1 to Mariners Form 8-K filed
on March 3, 2006).4.3*
    
    
    Amendment No. 1 and Consent, dated as of April 7,
2006, among Mariner Energy, Inc. and Mariner Energy
Resources, Inc., as Borrowers, the Lenders party
thereto, and Union Bank of California, N.A., as
Administrative Agent for such Lenders and as Issuing
Lender for such Lenders (incorporated by reference to
Exhibit 4.1 to Mariners Form 8-K filed on April 13,
2006).4.4*
    
    
    Amendment No. 2, dated as of October 13, 2006, among
Mariner Energy, Inc. and Mariner Energy Resources,
Inc., as Borrowers, the Lenders party thereto, and
Union Bank of California, N.A., as Administrative
Agent for such Lenders and as Issuing Lender for such
Lenders (incorporated by reference to Exhibit 4.1 to
Mariners Form 8-K filed on October 18, 2006).4.5*
    
    
    Amendment No. 3 and Consent, dated as of April 23,
2007, among Mariner Energy, Inc. and Mariner Energy
Resources, Inc., as Borrowers, the Lenders party
thereto, and Union Bank of California, N.A., as
Administrative Agent for such Lenders and as Issuing
Lender for such Lenders (incorporated by reference to
Exhibit 4.1 to Mariners Form 8-K filed on April 24,
2007).
 
 *
    
    Incorporated by reference as indicated. 2




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SIGNATURES
  MARINER ENERGY, INC.Date: August 27, 2007
    By:
    /s/ John H. KarnesJohn H. Karnes,Senior Vice President and
Chief Financial Officer 3




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Exhibit Index
 No.
    
    Description4.1
    
    
    Amendment No. 4, dated as of August 24, 2007, among
Mariner Energy, Inc. and Mariner Energy Resources,
Inc., as Borrowers, the Lenders (as defined in the
Amended and Restated Credit Agreement, dated as of
March 2, 2006, among Mariner Energy, Inc. and Mariner
Energy Resources, Inc., as Borrowers, the Lenders
party thereto from time to time, as Lenders, and
Union Bank of California, N.A., as Administrative
Agent and as Issuing Lender), and Union Bank of
California, N.A., as Administrative Agent for such
Lenders and as Issuing Lender for such Lenders.4.2*
    
    
    Amended and Restated Credit Agreement, dated as of
March 2, 2006, among Mariner Energy, Inc. and Mariner
Energy Resources, Inc., as Borrowers, the Lenders
party thereto from time to time, as Lenders, and
Union Bank of California, N.A., as Administrative
Agent and as Issuing Lender (incorporated by
reference to Exhibit 4.1 to Mariners Form 8-K filed
on March 3, 2006).4.3*
    
    
    Amendment No. 1 and Consent, dated as of April 7,
2006, among Mariner Energy, Inc. and Mariner Energy
Resources, Inc., as Borrowers, the Lenders party
thereto, and Union Bank of California, N.A., as
Administrative Agent for such Lenders and as Issuing
Lender for such Lenders (incorporated by reference to
Exhibit 4.1 to Mariners Form 8-K filed on April 13,
2006).4.4*
    
    
    Amendment No. 2, dated as of October 13, 2006, among
Mariner Energy, Inc. and Mariner Energy Resources,
Inc., as Borrowers, the Lenders party thereto, and
Union Bank of California, N.A., as Administrative
Agent for such Lenders and as Issuing Lender for such
Lenders (incorporated by reference to Exhibit 4.1 to
Mariners Form 8-K filed on October 18, 2006).4.5*
    
    
    Amendment No. 3 and Consent, dated as of April 23,
2007, among Mariner Energy, Inc. and Mariner Energy
Resources, Inc., as Borrowers, the Lenders party
thereto, and Union Bank of California, N.A., as
Administrative Agent for such Lenders and as Issuing
Lender for such Lenders (incorporated by reference to
Exhibit 4.1 to Mariners Form 8-K filed on April 24,
2007).
 
 *
    
    Incorporated by reference as indicated. 4