Document:

Second Amendment to the Participation Agreement

 Exhibit 10.1 
 SECOND AMENDMENT TO PARTICIPATION AGREEMENT 
 THIS SECOND AMENDMENT TO PARTICIPATION AGREEMENT (this
“Amendment”) is made this 5th day of August, 2009 among Chesapeake Louisiana, L.P., an Oklahoma limited partnership (“Chesapeake”) and Plains Exploration & Production Company, a Delaware corporation, and its wholly owned
subsidiaries, PXP Louisiana L.L.C., a Delaware limited liability company and PXP Louisiana Operations LLC, a Delaware limited liability company (collectively, “PXP”). Chesapeake and PXP shall be referred to herein, individually, as a
“Party” and, collectively, as the “Parties.” 
 WHEREAS, Chesapeake and PXP desire to amend certain provisions of that
certain Participation Agreement dated July 7, 2008, by and between Chesapeake and PXP, as amended by that certain First Amendment to Participation Agreement dated February 20, 2009 (the “Agreement”). 
 NOW THEREFORE, IN CONSIDERATION OF the mutual covenants set forth herein and in the Agreement and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, PXP and Chesapeake hereby amend the Agreement as follows: 
 1. Definitions and References. As used in
this Amendment, except as otherwise defined herein, all terms defined or referenced in the Agreement will have the same meanings herein as therein. 
 2.
Amendment to Section 1. Section 1 of the Agreement is hereby amended by the deletion of Sections 1.11 and 1.21. Section 1 of the Agreement is hereby further amended by: (a) deleting Sections 1.35 and 1.36 and replacing
those Sections with the following Sections 1.35 and 1.36: 
 “1.35 “Promoted Well” means any Well in
which Chesapeake elects to participate with respect to which PXP has paid or is obligated to pay Promoted Well Costs.” 
 “1.36 “Promoted Well Costs” means fifty percent (50%) of Chesapeake’s working interest share of all Well Costs attributable to periods on or before September 30, 2009 (hereinafter the “Settlement
Date”).” 
 3. Amendment of Section 3. All of Section 3, including Sections 3.1, 3.2, 3.3 and 3.4, is deleted in its entirety and
replaced with the following: 
 Section 3. Promote Cap Settlement. 
 On September 29, 2009, PXP shall pay to Chesapeake the sum of One Billion One Hundred Million Dollars ($1,100,000,000.00) (hereinafter referred to
as the “Settlement Payment”) in settlement of the estimated balance of the Promote Cap owing after application thereto of all Promoted Well Costs as set forth in this Section 3. No later than ninety (90) days after the Settlement
Date, Chesapeake shall: (a) determine the balance of the Promote Cap incorporating any Promoted Well Costs not previously applied (hereinafter the “Unapplied Promote Cap”); (b) discount the Unapplied Promote Cap at twelve percent
(12%) (the “Adjusted Settlement Amount”); (c) determine the adjustments to the Settlement Payment based upon the 

 
terms hereof; and (d) prepare and send to PXP a final settlement statement with respect to the Unapplied Promote Cap (the “Final Settlement
Statement”). PXP shall have sixty (60) days after receipt of the Final Settlement Statement to object to the determinations therein by written notice specifying the items with respect to which PXP objects and in the event PXP fails to
object within such sixty (60) day period, PXP will be deemed to have agreed to the Final Settlement Statement submitted by Chesapeake. In the event that PXP objects to the Final Settlement Statement, the Parties shall negotiate in good faith
toward resolving any disputes concerning the Final Settlement Statement and any necessary adjustments relating thereto within thirty (30) days after Chesapeake’s receipt of PXP’s objection to the Final Settlement Statement. Upon
finalization of the Final Settlement Statement pursuant to this Section, in the event the Adjusted Settlement Amount is less than the Settlement Payment Chesapeake shall repay PXP the positive difference determined by subtracting the Adjusted
Settlement Amount from the Settlement Payment and if the Adjusted Settlement Amount is greater than the Settlement Payment PXP shall pay Chesapeake the positive difference determined by subtracting the Settlement Payment from the Adjusted Settlement
Amount. The positive difference referenced in the preceding sentence will be paid by the Party owing such amount within five (5) days after its determination. The Parties agreement as to the Final Settlement Statement and the payment of any
amounts owing by one Party to the other pursuant thereto is referred to herein as the “Final Settlement.” PXP shall remain fully liable for and pay in accordance with its prior practices all Promoted Well Costs billed to PXP prior to the
submission of the Final Settlement Statement, and no additional Promoted Well Costs will be billed to PXP after submission of the Final Settlement Statement nor shall PXP have any obligation to pay Promoted Well Costs not billed to PXP prior to the
submission of the Final Settlement Statement. The Parties further agree that with respect to any post Final Settlement audit or other adjustments under any applicable JOA involving Promoted Well Costs, PXP shall only be entitled to or burdened by an
amount equal to twelve percent (12%) of any such adjustment attributable to Promoted Well Costs. 
 4. Amendment of Section 6.
Section 6 is amended to add the following: 
 “The tax partnership agreement shall only apply to Wells spudded by the Parties prior
to the Settlement Date.” 
 5. Amendment of Section 8.3. Section 8.3 of the Agreement is hereby amended to delete the third sentence
and replace same with the following: 
 “As used in this Agreement, “Acquisition Price” for any Acquired Interests acquired
between the Effective Date and June 30, 2013 means: (a) with respect to Acquired Interests offered to PXP by Chesapeake, Chesapeake’s Lease Acquisition Costs plus Five Thousand Dollars ($5,000.00) per Net Acre; and (b.) with respect
to Acquired Interests offered by PXP to Chesapeake, PXP’s Lease Acquisition Costs minus Five Thousand Dollars ($5,000.00) per Net Acre.” 
 6.
Amendment of Section 9.1. The last two sentences of Section 9.1 of the Agreement are hereby deleted in their entirety. 
 7. Addition
Section 27. The following Section 27 is hereby added to the Agreement: 
 “Section 27. Miscellaneous 
  

 2 

 27.1 Chesapeake and PXP shall each bear and pay its working interest share of any costs
and expenses associated with any Well drilled on the Joint Leases in accordance with the terms of the Agreement and the applicable JOA, including any elections thereunder. 
 27.2 In the event of a cash refund pursuant to Sections 4.4(c) and 4.6 of the PSA (a “PSA Refund”), then, in addition to such
PSA Refund, PXP shall also be entitled to receive a refund equal to the amount of such PSA Refund discounted at twelve percent (12%). 
 27.3 Chesapeake shall be obligated to spud, and diligently proceed toward completing, a minimum of one hundred fifty (150) Wells on the Joint Leases during each twelve (12) month period beginning
October 1, 2009 through September 30, 2012, for a minimum total of four hundred fifty (450) Wells, provided, however, if, during any such twelve (12) month period, PXP fails to participate with its full working interest share in
thirty-five (35) Wells, Chesapeake’s obligations to PXP under this Section 27.3 shall terminate with respect to the remaining Wells to be drilled during such twelve (12) month period. 
 27.4 The Parties hereby agree to amend and restate Exhibit “L” to the PSA by executing and recording the Memorandum of
Participation Agreement attached hereto as Attachment 1.” 
 8. Full Force and Effect. Except as expressly amended by this Amendment, the
Agreement shall remain in full force and effect in accordance with its terms. Except as otherwise provided herein, all provisions of this Amendment shall become effective on the Settlement Date; provided, however, that any provisions of this
Agreement requiring performance by either or both Parties prior to the Settlement Date shall be effective as of the date of required performance, and if PXP fails to make the Settlement Payment on September 29, 2009, this Amendment shall be
void ab initio. 
 9. Governing Law. This Amendment will be governed by and interpreted, construed and enforced in accordance with the laws of the
State of Louisiana. 
 10. Counterparts. This Amendment may be executed in multiple counterparts, each of which will be an original instrument, but
all of which will constitute one agreement. 
 [SIGNATURE PAGE FOLLOWS] 
  

 3 

 IN WITNESS WHEREOF, PXP and Chesapeake have executed this Amendment on the date first above written.

  

			
	CHESAPEAKE:
	
	CHESAPEAKE LOUISIANA, L.P., an Oklahoma limited partnership
		
	By:	 	Chesapeake Operating, Inc., General Partner
		
	By:	 	 /s/ Douglas J. Jacobson

		 	Douglas J. Jacobson
		 	Executive Vice President
		
	PXP:	 	
	
	PLAINS EXPLORATION & PRODUCTION COMPANY, a Delaware corporation
		
	By:	 	 /s/ John F. Wombwell

		 	John F. Wombwell
		 	Executive Vice President, General Counsel & Secretary
	
	PXP LOUISIANA L.L.C., a Delaware limited liability company
		
	By:	 	 /s/ John F. Wombwell

		 	John F. Wombwell, Vice President & Secretary
	
	PXP LOUISIANA OPERATIONS LLC, a Delaware limited liability company
		
	By:	 	 /s/ John F. Wombwell

		 	John F. Wombwell, Vice President & Secretary

  

 4Master Executive Employment Agreement with Jie Li

 Exhibit 10.1 
 MASTER EXECUTIVE EMPLOYMENT AGREEMENT 
 Dear Li Jie: 
 This Master Executive Employment Agreement, dated as of June 10, 2009 (this “Agreement”), is made and entered into by and between you and AsiaInfo Holdings, Inc., a Delaware corporation (the
“Company”). For purposes of this Master Agreement, “Group” means the Company and any direct or indirect subsidiaries of the Company. 
  

	1.	Purpose of this Agreement and the Supplementary Agreements 

  

	1.1.	The purpose of this Agreement is to set forth certain principal terms and conditions that apply to all of the employment services you render to the Company and other members of the
Group, either directly or pursuant to secondments or similar arrangements. Your employment shall also be governed from time to time by certain additional written agreements entered into between you and the Company or other members of the Group
(hereinafter “Supplementary Agreements”), as well as the written policies of the Company and the Group. The term of your employment, along with your salary and benefits and the provisions relevant to the termination of your
employment by you or the Group are set forth in the Supplementary Agreements. Any of the Supplementary Agreements may be terminated, modified or amended from time to time in accordance with their respective terms. In the event of any conflict
between the terms of any such Supplementary Agreement and the terms hereof, the terms hereof shall govern. 

  

	1.2.	Currently, the Supplementary Agreements in effect between you and the Company are as follows: 

  

	 	(a)	the Employment Contract between AsiaInfo Technologies (China), Inc., a company organized under the laws of the People’s Republic of China (“AsiaInfo
Technologies”) and you, dated June 10, 2009 (the “Employment Contract”); and 

  

	 	(b)	the Change of Control Agreement between you and the Company dated as of the date hereof. 

  

	2.	Confidential Information and Inventions 

 You agree
to comply strictly with the confidentiality and invention assignment provisions attached to this Agreement as Appendix I. 
  

	3.	Non-Competition 

  

	3.1.	You acknowledge that: 

  

	 	(a)	you possess skills that are special, unique or extraordinary; 

	 	(b)	the level of compensation and the provisions in the Supplementary Agreements for compensation are partly in consideration of and conditioned upon your not competing with the Group;

  

	 	(c)	the provisions of this Clause 3 are essential to protect the business and goodwill of the Group. 

  

	3.2.	You agree that during your employment with the Group, and for a period of six (6) months thereafter (the “Covenant Period”) you will not render services for
any organization, or engage directly or indirectly in any other employment, business, or business related activity unless you receive the prior written approval of the Company’s Board of Directors (the “Board”) to hold such
outside employment or engage in such business or activity. Such written approval will not be unreasonably withheld if such outside employment, business or activity would not in any way be competitive with the business or proposed business of the
Group or otherwise conflict with or adversely affect in any way your performance of your employment obligations to the Group. 

  

	3.3.	You agree that, during your employment, you shall devote substantially all your business efforts and time to the Group. You further agree that, during your employment, you will not
actively engage in any other employment, occupation or consulting activity for any direct or indirect remuneration without the prior approval of the Board; provided, however, that you may: 

  

	 	(a)	serve in any capacity with any professional, community, industry, civic, educational or charitable organization; 

  

	 	(b)	serve as a member of corporate boards or directors on which you currently serve and, with the consent of the Board (which consent shall not be unreasonably withheld or delayed),
other corporate boards of directors; and 

  

	 	(c)	manage your personal investments and legal affairs so long as such activities do not materially interfere with the discharge of your duties to the Group. 

 

	3.4.	You agree that during your employment and the Covenant Period, except as provided below, you will not: 

  

	 	(a)	accept employment with or render services or advice to any organization, or engage, directly or indirectly in any business that competes with the business of the Group in any
province in the People’s Republic of China (the “PRC”) where the Group is physically located or in which it generates more than 5% of its China revenues, as well as all areas of Hong Kong, Macau and Taiwan;

  

	 	(b)	become an owner of any company which provides products or services that are competitive with those offered or planned by the Group, including, but not limited to, companies offering
system integration services or telecommunications infrastructure software products in the PRC, Hong Kong, Macau or Taiwan (the business activities referred to in this paragraph will hereinafter be referred to as the “Business”); or

	 	(c)	directly or indirectly disrupt, damage or interfere with the operation or business of the Group by soliciting, recruiting, diverting, taking away or otherwise interfering with any
customers or clients of the Group; or 

  

	 	(d)	directly or indirectly solicit or encourage any employee or consultant of the Group to terminate his or her employment or engagement, or to accept employment or an engagement with
any other company. 

  

	3.5.	Notwithstanding the foregoing, you may own, directly or indirectly, solely as an investment, up to, but not more than, one percent (1%) of any class of “publicly traded
securities” of any company engaged in the Business. The term “publicly traded securities” shall mean securities that are traded on an internationally-recognized securities exchange. 

  

	3.6.	If any restriction set forth in this Clause is found by a court or arbitrator to be unenforceable by reason of its extent, duration, geographical scope or for any other reason, then
you agree, and hereby submit, to the reduction and limitation of such prohibition to such extent, duration, geographical scope or other provision as shall be deemed enforceable. 

  

	3.7.	You acknowledge that irreparable harm will be suffered by the Company in the event of the breach by you of any of your obligations under this Agreement, and that the Company will be
entitled, by reason of such breach or any threatened breach, to enforce by an injunction or decree of specific performance the obligations set forth in this Agreement, in addition to the Company’s other rights. Any claims asserted by you
against the Company shall not constitute a defense in any injunction action brought by the Company to obtain specific enforcement. 

  

	4.	Arbitration 

  

	4.1.	You agree that any dispute or controversy arising out of or in any way concerning this Agreement or your employment with the Company or any other member of the Group, shall be
submitted to a single arbitrator appointed by the Hong Kong International Arbitration Center. The arbitration shall be conducted in Hong Kong in accordance with the then applicable arbitration rules of the United Nations Commission on International
Trade Law and the language used in the arbitral proceedings shall be English. The arbitration award shall be final, conclusive and binding on the parties to the arbitration. Judgement may be entered on the arbitration award in any court having
jurisdiction. The Company and you shall each pay one-half of the costs and expenses of such arbitration, and each party shall separately pay its counsel’s fees and expenses. Notwithstanding this arbitration clause, the parties may apply for
injunctive relief to any court with jurisdiction. 

  

	4.2.	You understand that each party’s promise to resolve claims by arbitration in accordance with the provisions of this Agreement, rather than through the courts, is consideration
for the other party’s like promise. 

	5.	Miscellaneous Provisions 

 This Agreement and the
Supplemental Agreements represent the entire agreement among you, the Company and the other members of the Group relating to your employment and the additional matters provided for herein and therein. This Agreement may be amended or altered only in
a writing signed by you and the Company. 
 This agreement shall be construed and interpreted in accordance with the laws of the State of
Delaware. Each provision of this Agreement is severable from the others, and if any provision hereof shall be to any extent unenforceable it and the other provisions shall continue to be enforceable to the full extent allowable, as if such offending
provision had not been a part of this Agreement. 
 Sincerely, 
  

			
	ASIAINFO HOLDINGS, INC.
		
	By:	 	 /s/    Steve Zhang

	Name:	 	Steve Zhang
	Title:	 	CEO & President

 I agree to and accept the terms and conditions of this Agreement. 
  

	
	LI JIE
	
	 /s/    LI JIE

 APPENDIX I 
 CONFIDENTIAL INFORMATION AND INVENTIONS 
 For purposes of this Appendix, the
“Company” means AsiaInfo Holdings, Inc., a Delaware corporation, and the “Group” means the Company and any direct or indirect subsidiary of the Company. 
  

	1.	Confidential Information. 

 (a) Company
Information. I agree at all times during the term of my employment and thereafter, to hold in strictest confidence, and not to use, except for the benefit of the Company or the benefit of the Group, or to disclose to any person, firm or
corporation without written authorization of the Board of Directors of the Company, any Confidential Information (as hereafter defined). I understand that “Confidential Information” means any proprietary information, technical data,
trade secrets or know-how, including, but not limited to, research, product plans, products, services, customer lists and customers (including, but not limited to, customers of the Company and/or any other member of the Group on whom I called or
with whom I became acquainted during the term of my employment), partners, markets, software, developments, inventions, processes, formulas, technology, designs, drawings, engineering, hardware configuration information, yield data, equipment
modifications, pricing, marketing, finances or other business information of the Group disclosed to me by or obtained by me from the Company and/or any other member of the Group either directly or indirectly in writing, orally or by drawings or
observation of parts or equipment. I further understand that Confidential Information does not include any of the foregoing items which has become publicly known and made generally available through no wrongful act of mine or of others who were
under confidentiality obligations as to the item or items involved. 
 (b) Former Employer Information. I agree that I will not,
during my employment with the Company, improperly use or disclose any proprietary information or trade secrets of any former or concurrent employer or other person or entity and that I will not bring onto the premises of the Company and/or any other
member of the Group any unpublished document or proprietary information belonging to any such employer, person or entity unless consented to in writing by such employer, person or entity. I agree to indemnify the Company and/or any other member of
the Group and hold it or them harmless from all claims, liabilities, damages and expenses, including reasonable attorneys fees and costs of litigation, arising out of or in connection with any violation or claimed violation of a third party’s
rights resulting from any use by the Company and/or any other member of the Group of such proprietary information or trade secrets improperly used or disclosed by me. 
 (c) Third Party Information. I recognize that the Company and other members of the Group have received and in the future will receive from third parties their confidential or proprietary information subject to
a duty on the Company’s part or the part of other members of the Group to maintain the confidentiality of such information and to use it only for certain limited purposes. I agree to hold all such confidential or proprietary information in the
strictest confidence and not to disclose it to any person, firm or corporation or to use it except as necessary in carrying out my work for the Company consistent with the Company’s agreement with such third party. 

	2.	Inventions. 

 (a) Assignment of Inventions. I
agree that I will promptly make full written disclosure to the Company, will hold in trust for the sole right and benefit of the Company, and hereby assign to the Company, or its designee, all my right, title, and interest in and to any and all
inventions, original works of authorship, developments, concepts, improvements, designs, discoveries, ideas, trademarks or trade secrets, processes, copyright works, know-how, any other work’s information or matter which gives rise or may give
rise to any intellectual property of whatsoever nature, whether or not patentable or registrable under any law of any country, which I may solely or jointly conceive or develop or reduce to practice, or cause to be conceived or developed or reduced
to practice, during the period of time I am in the employ of the Company (collectively referred to as “Inventions”), except as provided in Section 2(e) below. I acknowledge that the Company, or its designee, has the absolute
title, right or interest in and to any and all original inventions or works of authorship which are made by me, as an employee, (solely or jointly with others) within the scope of and during the period of my employment with the Company. I understand
and agree that the decision whether or not to commercialize or market any invention developed by me solely or jointly with others is within the Company’ sole discretion and for the sole benefit of the Company and/or any other member of the
Group, and that no royalty will be due to me as a result of the Company’s efforts (or the efforts of any member of the Group) to commercialize or market any such Invention. 
 (b) Maintenance of Records. I agree to keep and maintain adequate and current written records of all Inventions made by me (solely or jointly with
others) during the term of my employment with the Company. The records will be in the form of notes, sketches, drawings, and any other format that may be specified by the Company. The records will be available to and remain the sole property of the
Company at all times. 
 (c) Patent and Copyright Registrations. I agree to assist the Company, or its designee, at the Company’s
expense, in every proper way to secure the Company’s (or its designee’s) rights in the Inventions and any copyrights, patents, mask work rights or other intellectual property rights relating thereto in any and all countries, including the
disclosure to the Company of all pertinent information and data with respect thereto, the execution of all applications, specifications, oaths, assignments and all other instruments which the Company shall deem necessary in order to apply for and
obtain such rights and in order to assign and convey to the Company, its successors, assigns, and nominees the sole and exclusive rights, title and interest in and to such Inventions, and any copyrights, patents, mask work rights or other
intellectual property rights relating thereto. I further agree that my obligation to execute or cause to be executed, when it is in my power to do so, any such instrument or papers shall continue after the termination of my employment with the Group
for any reason. If the Company or its designee is unable because of my mental or physical incapacity or for any other reason to secure my signature to apply for or to pursue any application for any United States or foreign patents or copyright
registrations covering Inventions or original works of authorship assigned to the Company as above, then I hereby irrevocably designate and appoint the Company and its duly authorized officers and agents as my agent and attorney in fact, to act for
and in my behalf and stead to execute and file any such applications and to do all other lawfully permitted acts to further the prosecution and issuance of letters patent or copyright registrations thereon with the same legal force and effect as if
executed by me. 

 3. Returning Company Documents. 
 I agree that, at the time of leaving the employ of the Company, I will deliver to the Company (and will not keep in my possession, recreate or deliver to anyone else) any and all devices, records, data, notes,
reports, proposals, lists, correspondence, specifications, drawings blueprints, sketches, materials, equipment, other documents or property, or reproductions of any aforementioned items developed by me pursuant to my employment with the Company or
otherwise belonging to the Company and/or any other member of the Group.

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