Document:

Joinder and Amendment to Purchase and Sale Agreement

 Exhibit 10.19 
 [EXECUTION COPY] 
 JOINDER AND AMENDMENT 
 TO 
 PURCHASE AND SALE AGREEMENT

 This JOINDER AND AMENDMENT TO PURCHASE AND SALE AGREEMENT (this “Joinder and Amendment”), dated
as of March 2, 2006, is by and among MARLIN ENERGY, L.L.C, a Delaware limited liability company (“Seller”), ENERGY XXI GULF COAST, INC., a Delaware corporation (“Buyer”) and ENERGY XXI (US
HOLDINGS) LIMITED, a company incorporated in Bermuda (“Holdings”). Capitalized term used but not defined herein shall have the meanings ascribed to such terms in the Purchase and Sale Agreement referred to below. 
 WHEREAS, Seller and Buyer have entered into that certain Purchase and Sale Agreement, dated as of February 21, 2006 (as amended and in effect
from time to time, the “Purchase and Sale Agreement”), pursuant to which, among other things, Seller has agreed to sell, and Buyer has agreed to purchase, all of the membership interests of each of Marlin Energy Offshore, L.L.C.
(“Marlin Offshore”) and Marlin Texas GP, L.L.C. (“Marlin GP”) and all of the limited partner interests of Marlin Texas, L.P. (“Marlin Texas”), all upon the terms and conditions set forth therein:

 WHEREAS, upon the consummation of the purchase and sale as set forth in the Purchase and Sale Agreement, Buyer will own all of the
equity interests of Marlin Offshore and Marlin GP and, together with Marlin GP, all of the equity interests in Marlin Texas; 
 WHEREAS, Buyer is an indirect wholly-owned subsidiary of Holdings; 
 WHEREAS, Holdings, having provided funds to be
applied to the Deposit on behalf of Buyer, wishes to join the Purchase and Sale Agreement as a Joining Affiliate as contemplated by Section 15.09(b) thereof; 
 WHEREAS, Seller, Buyer and Holdings wish to amend certain provisions of the Purchase and Sale Agreement in light of such joinder; 
 NOW THEREFORE, in consideration of the foregoing, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Purchase and Sale Agreement is hereby amended
as follows: 
  

	1.	Holdings hereby agrees, with effect from the date first set forth above, to join in and be a party to the Purchase and Sale Agreement as a Joining Affiliate, as provided in Section
15.09(b) thereof. Each of Seller and Buyer hereby acknowledge such joinder and agree that Holdings is a party to the Purchase and Sale Agreement with effect from such date. 

  

	2.	Seller and Buyer each hereby acknowledge and agree that any and all payments to be made by Seller to Buyer under the Purchase and Sale Agreement (including without limitation any
portion of the Deposit to be returned, and any liquidated damages to be paid, by Seller or the Escrow Agent as provided in Section 12.02(b) and (d) of the Purchase and Sale Agreement) shall be paid directly to Holdings and not to Buyer.

  

	3.	 The Purchase and Sale Agreement is hereby amended by amending Section l2.02(b) and (d) thereof to replace each and every reference therein to (i) the
Deposit or any portion thereof 

	 	 
being returned to Buyer, whether by Seller or by the Escrow Agent, and (ii) any amount being paid as liquidated damages to Buyer, with a provision
requiring any and all such amounts to be paid directly to Holdings and not to Buyer. Seller hereby undertakes and agrees to make any and all such payments, as each may be due and payable, directly to Holdings and not to Buyer.

  

	4.	The Purchase and Sale Agreement is hereby further amended by amending Section 15.11 to include Holding’s notice address as follows: 

  

			
	Joining Affiliate:    	  	 Energy XXI (US Holdings) Limited
 Canon’s
Court
 22 Victoria Street
 PO Box HM 1179
 Hamilton HM EX
 Bermuda
 Attention: John D. Schiller & West Griffin
 Fax No.
(713) 659-2101

  

	5.	Seller, Buyer and Holdings each hereby affirm and agree that, for all purposes under Section 12.02(b) and (d), Seller shall deal directly with Holdings in lieu of Buyer
thereunder. For all other provisions of the Purchase and Sale Agreement, Seller shall deal directly with Buyer as contemplated therein. 

  

	6.	Buyer hereby agrees that Holdings will suffer immediate and irreparable injury and have no adequate remedy at law if Buyer fails to comply with Section l2.02(b) and (d) of the
Purchase and Sale Agreement as amended by this Joinder and Amendment. Accordingly, Holdings shall have the right to seek specific performance of Buyer’s obligations under such Section of the Purchase and Sale Agreement as amended by this
Joinder and Amendment. 

  

	7.	Seller and Buyer each hereby agree that this Joinder and Amendment is acceptable in form and substance, and meets all applicable requirements, to join Holdings to the Purchase and
Sale Agreement as a Joining Affiliate, in accordance with Section 15.09 of the Purchase and Sale Agreement. 

  

	8.	This Joinder and Amendment and the legal relations between the parties hereto shall be governed and construed in accordance with the laws of the State of Texas, without giving
effect to principles of conflicts of laws that would result in the application of the laws of another jurisdiction. 

  

	9.	No party may assign its rights, duties or obligations under this Joinder and Amendment without the prior written consent of the other parties. This Joinder and Amendment may not be
amended or modified or any provision hereof waived without the prior written consent of each party hereto. This Joinder and Amendment may be executed in any number of separate counterparts, each of which shall, collectively and separately,
constitute one agreement. Delivery of a facsimile counterpart shall constitute an original signature page hereof. 

 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 
  

 - 2 - 

 IN WITNESS WHEREOF, Seller, Buyer and Holdings have each caused this Joinder and Amendment to be duly executed as
of the date first above written. 
  

			
	 ENERGY XXI (US HOLDINGS) LIMITED,
   as Joining Affiliate

		
	 By:
	 	/s/ Illegible
	Name:	 	Illegible
	Title:	 	Illegible
	
	MARLIN ENERGY, L.L.C, as Seller
		
	 By:
	 	/s/ Illegible
	Name:	 	Illegible
	Title:	 	Illegible
	
	ENERGY XXI GULF COAST, INC, as Buyer
		
	 By:
	 	/s/ Illegible
	Name:	 	Illegible
	Title:	 	Illegible

  

 - 3 -Second Amendment to Purchase and Sale Agreement dated as of March 12, 2006

 Exhibit 10.20 
 SECOND AMENDMENT TO 
 PURCHASE AND SALE AGREEMENT 
 This SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT (this “Amendment”), dated as of March 12, 2006, but effective as of
February 21, 2006, is by and among MARLIN ENERGY, L.L.C., a Delaware limited liability company (“Seller”), ENERGY XXI GULF COAST, INC., a Delaware corporation (“Buyer”) and ENERGY XXI
(US HOLDINGS) LIMITED, a company incorporated in Bermuda (“Holdings”). Capitalized terms used but not defined herein shall have the meanings ascribed to such terms in the Purchase and Sale Agreement referred to below.

 WHEREAS, Seller and Buyer have entered into that certain Purchase and Sale Agreement, dated as of February 21, 2006 (as
amended, including pursuant to the Joinder and Amendment described below, and as in effect from time to time, the “Purchase and Sale Agreement”), pursuant to which, among other things, Seller has agreed to sell, and Buyer has agreed
to purchase, all of the membership interests of each of Marlin Energy Offshore, L.L.C. and Marlin Texas GP, L.L.C. and all of the limited partner interests of Marlin Texas, L.P., all upon the terms and conditions set forth therein; 
 WHEREAS, pursuant to a Joinder and Amendment to Purchase and Sale Agreement dated March 2, 2006, Holdings was joined to the Purchase
Agreement as a Joining Affiliate (as defined in the Purchase and Sale Agreement); and 
 WHEREAS, one of Buyer’s conditions to
closing of the transaction contemplated by the Purchase and Sale Agreement was incorrectly reflected in the Purchase and Sale Agreement; and 
 WHEREAS, the parties hereto desire to amend the Purchase and Sale Agreement to correctly reflect such condition to the closing of such transaction; and 
 NOW THEREFORE, in consideration of the premises, the mutual benefits to be derived from the Purchase and Sale Agreement and other good and valuable consideration, the parties hereby agree as follows:

 1. Definitions. Capitalized terms used herein and not otherwise defined herein shall have the meanings given such terms in the Purchase and
Sale Agreement. 
 2. Replacement of Closing Condition. Section 10.06 of the Purchase and Sale Agreement is hereby deleted in its entirety
and the following new Section 10.06 shall be substituted in lieu thereof. 
 “Section 10.06 Shareholder Approval.
Buyer’s Parent shall have obtained the approval of its shareholders of the transactions contemplated hereby and of the release of funds held in trust to be paid toward the Purchase Price at Closing, and the shares of Buyer Parent, shall have
been readmitted for trading on the AIM (being a market operated by the London Stock Exchange plc).” 

 3. References. All references to the “Agreement” in the Purchase and Sale Agreement or to the
Purchase and Sale Agreement in any other document, instrument, agreement or writing shall hereafter be deemed to refer to the Purchase and Sale Agreement as amended hereby. 
 4. Ratification. The parties hereto ratify and confirm the Purchase and Sale Agreement, as amended hereby. 
 5. Governing Law. This Agreement, the other documents delivered pursuant hereto, and the legal relations between the Parties shall be governed and construed in accordance with the laws of the State of Texas, without giving
effect to principles of conflicts of laws that would result in the application of the laws of another jurisdiction. 
 6. Counterparts. This
Amendment may be executed in one or more counterparts each of which will be deemed an original, but all of which together will be considered one and the same agreement, and will become effective when signed by each of the parties and delivered to
each party. This Amendment may be executed by any party by facsimile. 
 Executed effective as of date set forth above. 
  

			
	 ENERGY XXI (US HOLDINGS) LIMITED,
 as
Joining Affiliate

		
	 By:
	 	 /s/ John D. Schiller Jr.

	 Name: John D. Schiller Jr.
 Title: Chairman and CEO

  

			
	MARLIN ENERGY, L.L.C., as Seller
		
	 By:
	 	 /s/ Randy E. Wheeler

	 Name: Randy E. Wheeler
 Title: Vice President, Land

  

			
	ENERGY XXI GULF COAST, INC., as Buyer
		
	 By:
	 	 /s/ John D. Schiller Jr.

	 Name: John D. Schiller Jr.
 Title: Chairman and CEO

  

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