Document:

Fifth Supplemental Indenture, dated as of January 29, 2008

 Exhibit 4.6 
 FIFTH SUPPLEMENTAL INDENTURE 
 This Fifth Supplemental Indenture, dated as of January 29, 2008
(this “Supplemental Indenture”), among Latigo Gas Group, LLC, a Texas limited liability company (“LGG”), Latigo Gas Holdings, LLC, a Delaware limited liability company (“LGH”),
Latigo Gas Services, LP, a Texas limited partnership (“LGS”), Latigo Holdings (Texas), LLC, a Delaware limited liability company (“LHT”), Latigo Investments, LLC, a Delaware limited liability company
(“Latigo Investments”), Latigo Petroleum, Inc., a Delaware corporation (“Latigo Petroleum”), Latigo Petroleum Texas LP, a Texas limited partnership (“LPT”), Pogo Energy, Inc., a
Texas corporation (“Pogo Energy”), Pogo Panhandle 2004, L.P., a Texas limited partnership (“Pogo Panhandle”), Pogo Producing Company LLC, a Delaware limited liability company
(“PPP”), Pogo Producing (Texas Panhandle) Company, a Texas corporation (“PPTP”), and PXP Aircraft LLC, a Delaware limited liability company (“PXP Aircraft” and together with
LGG, LGH, LGS, LHT, Latigo Investments, Latigo Petroleum, LPT, Pogo Energy, Pogo Panhandle, PPP and PPTP, the “New Subsidiary Guarantors”), Plains Exploration & Production Company, a Delaware corporation (together
with its successors and assigns, the “Company”), the existing subsidiary guarantors party hereto (the “Guarantors”), and Wells Fargo Bank, N.A., a nationally chartered association, as Trustee (the
“Trustee”) under the Indenture referred to below. 
 W I T N E S S E T H: 
 WHEREAS, the Company, the Guarantors and the Trustee have heretofore executed and delivered an Indenture (as amended, supplemented, waived or otherwise
modified through the date hereof, the “Indenture”), dated as of March 13, 2007, as supplemented by a First Supplemental Indenture, dated as of March 13, 2007, providing for the issuance of 7% Senior Notes due 2017
of the Company (the “7% Notes”), by a Second Supplemental Indenture, dated as of June 5, 2007, providing for the addition of certain subsidiary guarantors, by a Third Supplemental Indenture, dated as of June 19,
2007, providing for the issuance of 7 3/4% Senior Notes due 2015 (the “7 3/4% Notes” and, together with the 7% Notes, the “Notes”) and by a Fourth Supplemental Indenture, dated as of November 14,
2007, providing for the addition of an additional subsidiary guarantor; 
 WHEREAS,
Section 10.17 of the Indenture provides that if any Domestic Restricted Subsidiary that is not a Guarantor is or becomes obligated under any Indebtedness pursuant to a Guarantee of Indebtedness of the Company or any Guarantor (other than
the Notes), and the maximum principal amount of Indebtedness of such Domestic Restricted Subsidiary under such Guarantee exceeds $10.0 million, the Company shall cause that Domestic Restricted Subsidiary to Guarantee the Notes and become a
Guarantor, pursuant to the Subsidiary Guarantee provisions of the Indenture, by executing a supplemental indenture and delivering it to the Trustee within 30 days after the date on which such Domestic Restricted Subsidiary Guaranteed such
Indebtedness of the Company or a Guarantor; provided, however, that the Company shall not be required to cause such Domestic Restricted Subsidiary to so Guarantee the Notes and become a Guarantor prior to the 180th day after the consummation of any transaction (including without limitation any merger, consolidation or purchase) pursuant to which such Domestic Restricted
Subsidiary becomes a Subsidiary of the Company; and 
  

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 WHEREAS, pursuant to Section 9.1 of the Indenture, the Trustee, the Guarantors and the
Company are authorized to execute and deliver this Supplemental Indenture to amend the Indenture, without the consent of any holder of the Notes. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Subsidiary Guarantor, the Company, the Guarantors and the Trustee mutually covenant and
agree for the equal and ratable benefit of the Holders of the Notes as follows: 
 ARTICLE I 
 Definitions 
 SECTION
1.1 Defined Terms. As used in this Supplemental Indenture, capitalized terms used, but not otherwise defined herein are used herein as defined in the Indenture. The words “herein,” “hereof”
and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof. 
 ARTICLE II 
 Agreement to be Bound

 SECTION 2.1 Agreement to be Bound. Each of the New Subsidiary Guarantors hereby becomes a party to the Indenture as a
Guarantor and as such will have all of the rights and be subject to all of the obligations and agreements of a Guarantor under the Indenture. Each New Subsidiary Guarantor agrees to be bound by all of the provisions of the Indenture applicable to a
Guarantor and to perform all of the obligations and agreements of a Guarantor under the Indenture. 
 ARTICLE III 
 Miscellaneous 
 SECTION
3.1 Parties. Nothing expressed or mentioned herein is intended or shall be construed to give any Person, firm or corporation, other than the Holders and the Trustee, any legal or equitable right, remedy or claim under or in respect of
this Supplemental Indenture or the Indenture or any provision herein or therein contained. 
 SECTION 3.2 Governing Law. This
Supplemental Indenture shall be governed by, and construed in accordance with, the laws of the State of New York. 
  

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 SECTION 3.3 Severability Clause. In case any provision in this Supplemental Indenture shall
be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be ineffective only to the extent of such invalidity,
illegality or unenforceability. 
 SECTION 3.4 Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as
expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all
purposes with respect to the Notes, and every Holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby. The Trustee makes no representation or warranty as to the validity or sufficiency of this Supplemental
Indenture. 
 SECTION 3.5 Counterparts. The parties hereto may sign one or more copies of this Supplemental Indenture in
counterparts, all of which together shall constitute one and the same agreement. 
 SECTION 3.6 Headings. The headings of the
Articles and the sections in this Supplemental Indenture are for convenience of reference only and shall not be deemed to alter or affect the meaning or interpretation of any provisions hereof. 
 [SIGNATURE PAGE FOLLOWS] 
  

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 IN WITNESS WHEREOF, the parties hereto have caused this Fifth Supplemental Indenture to be duly executed
as of the date first above written. 
  

			
	THE COMPANY:
	
	PLAINS EXPLORATION & PRODUCTION COMPANY
		
	By:	 	/s/ WINSTON M. TALBERT
	Name:	 	Winston M. Talbert
	Title:	 	 Executive Vice President & Chief
 Financial
Officer

 Fifth Supplemental Indenture Signature Page 

					
	THE GUARANTORS:
	
	ARGUELLO INC.
	BROWN PXP PROPERTIES, LLC
	LARAMIE LAND & CATTLE COMPANY, LLC
		 	By:	 	PXP Piceance LLC, its sole member
		 	By:	 	Plains Resources Inc., its sole member
	 NUEVO GHANA INC.
 NUEVO INTERNATIONAL INC.

 NUEVO OFFSHORE COMPANY
 NUEVO RESOURCES INC.
 PACIFIC INTERSTATE OFFSHORE COMPANY
 PLAINS ACQUISITION CORPORATION

PLAINS LOUISIANA INC.
 PLAINS RESOURCES INC.
 PLAINS RESOURCES INTERNATIONAL INC.
 PXP BRUSH CREEK LLC

		 	By:	 	Plains Resources Inc., its sole member
	PXP CV PIPELINE LLC
		 	By:	 	Plains Resources Inc., its sole member
	PXP EAST PLATEAU LLC
		 	By:	 	Plains Resources Inc., its sole member
	 PXP GULF COAST INC.
 PXP HELL’S GULCH
LLC

		 	By:	 	Plains Resources Inc., its sole member
	PXP LOUISIANA L.L.C.
		 	By:	 	Plains Louisiana Inc., its sole member
	 PXP PERMIAN INC.
 PXP PICEANCE
LLC

		 	By:	 	Plains Resources Inc., its sole member
	 PXP TEXAS INC.
 PXP TEXAS LIMITED PARTNERSHIP

		 	By:	 	PXP Texas Inc., its general partner
		
	By:	 	/s/ WINSTON M. TALBERT
	Name:	 	Winston M. Talbert
	Title:	 	Vice President & Treasurer

 Fifth Supplemental Indenture Signature Page 

					
	PXP DEEPWATER L.L.C.
			
		 	By:	 	 Plains Exploration & Production Company,
 its sole member

		
	By:	 	/s/ WINSTON M. TALBERT
	Name:	 	Winston M. Talbert
	Title:	 	Executive Vice President & Chief Financial Officer

 Fifth Supplemental Indenture Signature Page 

					
	THE NEW SUBSIDIARY GUARANTORS:
	
	 LATIGO GAS GROUP, LLC
 LATIGO GAS HOLDINGS,
LLC
 LATIGO HOLDINGS (TEXAS), LLC
 LATIGO INVESTMENTS,
LLC
 LATIGO GAS SERVICES, LP

		 	By:	 	Latigo Gas Group, LLC, its general partner
	 LATIGO PETROLEUM, INC.
 LATIGO PETROLEUM
TEXAS, LP

		 	By:	 	Latigo Investments, LLC, its general partner
	 POGO ENERGY, INC.
 POGO PANHANDLE 2004, L.P.

		 	By:	 	Pogo Energy, Inc., its general partner
	 POGO PRODUCING (TEXAS PANHANDLE) COMPANY
 POGO PRODUCING COMPANY LLC

		
	By:	 	/s/ WINSTON M. TALBERT
	Name:	 	Winston M. Talbert
	Title:	 	Vice President & Treasurer
	
	PXP AIRCRAFT LLC
		 	By:	 	Plains Exploration & Production Company, its sole member
		
	By:	 	/s/ WINSTON M. TALBERT
	Name:	 	Winston M. Talbert
	Title:	 	Executive Vice President & Chief Financial Officer

 Fifth Supplemental Indenture Signature Page 

			
	THE TRUSTEE:
	
	WELLS FARGO BANK, N.A.
		
	By:	 	/s/ PATRICK GIORDANO
	Name:	 	Patrick Giordano
	Title:	 	Vice President

 Fifth Supplemental Indenture Signature PageSixth Supplemental Indenture, dated as of February 13, 2008

 Exhibit 4.7 
 SIXTH SUPPLEMENTAL INDENTURE 
 This Sixth Supplemental Indenture, dated as of February 13, 2008
(this “Supplemental Indenture”), among Pogo Partners, Inc., a Texas corporation (“Pogo Partners”), Pogo Producing (San Juan) Company, a Texas corporation (“Pogo San Juan”, and
together with Pogo Partners, the “New Subsidiary Guarantors”), Plains Exploration & Production Company, a Delaware corporation (together with its successors and assigns, the “Company”), the
existing subsidiary guarantors party hereto (the “Guarantors”), and Wells Fargo Bank, N.A., a nationally chartered association, as Trustee (the “Trustee”) under the Indenture referred to below.

 W I T N E S S E T H: 
 WHEREAS, the Company, the Guarantors and the Trustee have heretofore executed and delivered an Indenture (as amended, supplemented, waived or otherwise modified through the date hereof, the “Indenture”), dated as of
March 13, 2007, as supplemented by a First Supplemental Indenture, dated as of March 13, 2007, providing for the issuance of 7% Senior Notes due 2017 of the Company (the “7% Notes”), by a Second Supplemental
Indenture, dated as of June 5, 2007, providing for the addition of certain subsidiary guarantors, by a Third Supplemental Indenture, dated as of June 19, 2007, providing for the issuance of 7 3/4% Senior Notes due 2015 (the “7
3/4% Notes” and, together with the 7% Notes, the “Notes”), by a Fourth Supplemental Indenture, dated as of November 14, 2007, providing for the addition of an additional subsidiary guarantor, and by a Fifth
Supplemental Indenture, dated as of January 29, 2008, providing for the addition of certain subsidiary guarantors; 
 WHEREAS, Section 10.17 of the Indenture provides that if any Domestic Restricted
Subsidiary that is not a Guarantor is or becomes obligated under any Indebtedness pursuant to a Guarantee of Indebtedness of the Company or any Guarantor (other than the Notes), and the maximum principal amount of Indebtedness of such Domestic
Restricted Subsidiary under such Guarantee exceeds $10.0 million, the Company shall cause that Domestic Restricted Subsidiary to Guarantee the Notes and become a Guarantor, pursuant to the Subsidiary Guarantee provisions of the Indenture, by
executing a supplemental indenture and delivering it to the Trustee within 30 days after the date on which such Domestic Restricted Subsidiary Guaranteed such Indebtedness of the Company or a Guarantor; provided, however, that the
Company shall not be required to cause such Domestic Restricted Subsidiary to so Guarantee the Notes and become a Guarantor prior to the 180th day
after the consummation of any transaction (including without limitation any merger, consolidation or purchase) pursuant to which such Domestic Restricted Subsidiary becomes a Subsidiary of the Company; and 
 WHEREAS, pursuant to Section 9.1 of the Indenture, the Trustee, the Guarantors and the Company are authorized to execute and deliver this
Supplemental Indenture to amend the Indenture, without the consent of any holder of the Notes. 
 NOW, THEREFORE, in consideration of the
foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Subsidiary Guarantors, the Company, the Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the
Holders of the Notes as follows: 
  

 1 

 ARTICLE I 
 Definitions 
 SECTION 1.1 Defined Terms. As used in this Supplemental Indenture,
capitalized terms used, but not otherwise defined herein are used herein as defined in the Indenture. The words “herein,” “hereof” and “hereby” and other words of similar import
used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof. 
 ARTICLE II

 Agreement to be Bound 
 SECTION 2.1 Agreement to be Bound. Each of the New Subsidiary Guarantors hereby becomes a party to the Indenture as a Guarantor and as such will have all of the rights and be subject to all of the obligations and agreements of a
Guarantor under the Indenture. Each New Subsidiary Guarantor agrees to be bound by all of the provisions of the Indenture applicable to a Guarantor and to perform all of the obligations and agreements of a Guarantor under the Indenture. 

ARTICLE III 
 Miscellaneous

 SECTION 3.1 Parties. Nothing expressed or mentioned herein is intended or shall be construed to give any Person, firm or
corporation, other than the Holders and the Trustee, any legal or equitable right, remedy or claim under or in respect of this Supplemental Indenture or the Indenture or any provision herein or therein contained. 
 SECTION 3.2 Governing Law. This Supplemental Indenture shall be governed by, and construed in accordance with, the laws of the State of New
York. 
 SECTION 3.3 Severability Clause. In case any provision in this Supplemental Indenture shall be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability.

 SECTION 3.4 Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the
Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and 

  

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effect. This Supplemental Indenture shall form a part of the Indenture for all purposes with respect to the Notes, and every Holder of Notes heretofore or
hereafter authenticated and delivered shall be bound hereby. The Trustee makes no representation or warranty as to the validity or sufficiency of this Supplemental Indenture. 
 SECTION 3.5 Counterparts. The parties hereto may sign one or more copies of this Supplemental Indenture in counterparts, all of which
together shall constitute one and the same agreement. 
 SECTION 3.6 Headings. The headings of the Articles and the sections in
this Supplemental Indenture are for convenience of reference only and shall not be deemed to alter or affect the meaning or interpretation of any provisions hereof. 
 [SIGNATURE PAGE FOLLOWS] 
  

 3 

 IN WITNESS WHEREOF, the parties hereto have caused this Sixth Supplemental Indenture to be duly executed
as of the date first above written. 
  

			
	THE COMPANY:
	
	PLAINS EXPLORATION & PRODUCTION COMPANY
		
	By:	 	/s/ Winston M. Talbert
	Name:	 	Winston M. Talbert
	Title:	 	 Executive Vice President & Chief
 Financial
Officer

 Sixth Supplemental Indenture Signature Page 

					
	THE GUARANTORS:
	
	 ARGUELLO INC.
 BROWN PXP PROPERTIES,
LLC
 LARAMIE LAND & CATTLE COMPANY, LLC

		 	By:	 	PXP Piceance LLC, its sole member
		 	By:	 	Plains Resources Inc., its sole member
	 LATIGO GAS GROUP, LLC
 LATIGO GAS HOLDINGS,
LLC
 LATIGO HOLDINGS (TEXAS), LLC
 LATIGO INVESTMENTS,
LLC
 LATIGO GAS SERVICES, LP

		 	By:	 	Latigo Gas Group, LLC, its general partner
	 LATIGO PETROLEUM, INC.
 LATIGO PETROLEUM
TEXAS, LP

		 	By:	 	Latigo Investments, LLC, its general partner
	 NUEVO GHANA INC.
 NUEVO INTERNATIONAL INC.

 NUEVO OFFSHORE COMPANY
 NUEVO RESOURCES INC.
 PACIFIC INTERSTATE OFFSHORE COMPANY
 PLAINS ACQUISITION CORPORATION

PLAINS LOUISIANA INC.
 PLAINS RESOURCES INC.
 PLAINS RESOURCES INTERNATIONAL INC.
 POGO ENERGY, INC.
 POGO PANHANDLE 2004, L.P.

		 	By:	 	Pogo Energy, Inc., its general partner
	 POGO PRODUCING (TEXAS PANHANDLE) COMPANY
 POGO PRODUCING COMPANY LLC
 PXP BRUSH CREEK LLC

		 	By:	 	Plains Resources Inc., its sole member
	PXP CV PIPELINE LLC
		 	By:	 	Plains Resources Inc., its sole member
	PXP EAST PLATEAU LLC
		 	By:	 	Plains Resources Inc., its sole member
	 PXP GULF COAST INC.
 PXP HELL’S GULCH
LLC

		 	By:	 	Plains Resources Inc., its sole member
	PXP LOUISIANA L.L.C.
		 	By:	 	Plains Louisiana Inc., its sole member
	 PXP PERMIAN INC.
 PXP PICEANCE
LLC

		 	By:	 	Plains Resources Inc., its sole member
	PXP TEXAS INC.

 Sixth Supplemental Indenture Signature Page 

					
	PXP TEXAS LIMITED PARTNERSHIP
		 	By:	 	PXP Texas Inc., its general partner
		
	By:	 	/s/ Winston M. Talbert
	Name:	 	Winston M. Talbert
	Title:	 	Vice President & Treasurer
	
	 PXP AIRCRAFT LLC
 PXP DEEPWATER
L.L.C.

		 	By:	 	 Plains Exploration & Production Company,
 its sole member

		
	By:	 	/s/ Winston M. Talbert
	Name:	 	Winston M. Talbert
	Title:	 	 Executive Vice President & Chief
 Financial Officer

 Sixth Supplemental Indenture Signature Page 

			
	THE NEW SUBSIDIARY GUARANTORS:
	
	 POGO PARTNERS, INC.
 POGO PRODUCING (SAN
JUAN) COMPANY

		
	By:	 	/s/ Winston M. Talbert
	Name:	 	Winston M. Talbert
	Title:	 	Vice President & Treasurer

 Sixth Supplemental Indenture Signature Page 

			
	THE TRUSTEE:
	
	WELLS FARGO BANK, N.A.
		
	By:	 	/s/ Patrick Giordano
	Name:	 	Patrick Giordano
	Title:	 	Vice President

 Sixth Supplemental Indenture Signature Page

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