Endeavour International Corp Watch

from 8-K/A 1 page Sale and Purchase Agreement in Respect of Interests in Licences Nos. P.640 and P.233 (Blocks 15/24b Macculloch Area and Area B and 15/25a) (Including Interests in the Macculloch and Nicol Fields) and Licence P.213 (Block 16/26a Area A) (Including Interests in the Alba Field) Dated 23 December 2011 (The “Spa”) We Refer to the Spa Between US, Conocophillips (U.K.) Limited, Conocophillips Petroleum Limited and Conocophillips (U.K.) Lambda Limited (Together, the “Sellers”) and Endeavour Energy Uk Limited (The "Purchaser”). the Parties Wish to Amend the Provisions of Clause 2.3 of the Spa to Extend the Macculloch and Nicol Backstop Date to 14th December 2012 to Allow Further Time to Obtain Fulfilment of the Outstanding Conditions Precedent. 1. Definitions and Interpretation Unless Stated Otherwise, Words and Expressions Used in This Letter Agreement Shall Have the Same Meanings as Is Given to Those Words and Expressions in the Spa. 2. Amendment to Clause 2.3 of the Spa the Parties Agree That With Effect on and From the Date Hereof, Clause 2.3 of the Spa Shall Be Amended as Follows: “30th November 2012” Shall Be Deleted and Replaced With “14th December 2012”. 3. General

from 8-K 1 page Sale and Purchase Agreement in Respect of Interests in Licences Nos. P.640 and P.233 (Blocks 15/24b Macculloch Area and Area B and 15/25a) (Including Interests in the Macculloch and Nicol Fields) and Licence P.213 (Block 16/26a Area A) (Including Interests in the Alba Field) Dated 23 December 2011 (The “Spa”) We Refer to the Spa Between US, Conocophillips (U.K.) Limited, Conocophillips Petroleum Limited and Conocophillips (U.K.) Lambda Limited (Together, the “Sellers”) and Endeavour Energy Uk Limited (The "Purchaser”). the Parties Wish to Amend the Provisions of Clause 2.3 of the Spa to Extend the Macculloch and Nicol Backstop Date to 14th December 2012 to Allow Further Time to Obtain Fulfilment of the Outstanding Conditions Precedent. 1. Definitions and Interpretation Unless Stated Otherwise, Words and Expressions Used in This Letter Agreement Shall Have the Same Meanings as Is Given to Those Words and Expressions in the Spa. 2. Amendment to Clause 2.3 of the Spa the Parties Agree That With Effect on and From the Date Hereof, Clause 2.3 of the Spa Shall Be Amended as Follows: “30th November 2012” Shall Be Deleted and Replaced With “31th December 2012”. 3. General

from 8-K 1 page Sale and Purchase Agreement in Respect of Interests in Licences Nos. P.640 and P.233 (Blocks 15/24b Macculloch Area and Area B and 15/25a) (Including Interests in the Macculloch and Nicol Fields) and Licence P.213 (Block 16/26a Area A) (Including Interests in the Alba Field) Dated 23 December 2011 (The “Spa”) We Refer to the Spa Between US, Conocophillips (U.K.) Limited, Conocophillips Petroleum Limited and Conocophillips (U.K.) Lambda Limited (Together, the “Sellers”) and Endeavour Energy Uk Limited (The "Purchaser”). the Parties Wish to Amend the Provisions of Clause 2.3 of the Spa to Extend the Macculloch and Nicol Backstop Date to 30th November 2012 to Allow Further Time to Obtain Fulfilment of the Outstanding Conditions Precedent. 1. Definitions and Interpretation Unless Stated Otherwise, Words and Expressions Used in This Letter Agreement Shall Have the Same Meanings as Is Given to Those Words and Expressions in the Spa. 2. Amendment to Clause 2.3 of the Spa the Parties Agree That With Effect on and From the Date Hereof, Clause 2.3 of the Spa Shall Be Amended as Follows: “31st October 2012” Shall Be Deleted and Replaced With “30th November 2012”. 3. General

from 8-K ~50 pages 1. Definitions and Interpretation 2. Sale and Purchase of the Interests 3. Consideration 4. Interim Period 5. Completion 6. Post Completion 7. Indemnities 8. Guarantee 9. Warranties 10. Confidentiality and Announcements 11. Notices 12. Costs and Expenses 13. Taxation 14. Further Assurance 15. Variation 16. Severance 17. Assignment 18. General 19. Rights of Third Parties 20. Governing Law and Jurisdiction Schedule 1 Licence Interests Schedule 2 Allocation of Final Consideration Schedule 3 Working Capital Schedule 4 Interim and Final Completion Statement Formats Schedule 5 Seller’s Warranties Schedule 6 Purchaser’s Warranties Schedule 7 Deed of Guarantee and Indemnity Schedule 8 Form of Dsa Schedule 9 Petroleum Sales Schedule 10 Appointment of Expert Schedule 11 Form of Opinion Letter Schedule 12 Pdsa Cost Profile 2 This Agreement Is Made the 23rd Day of December 2011 Between (1) Conocophillips (U.K.) Limited, a Company Incorporated in England and Wales (Company Number 00524868), Having Its Registered Office at Portman House, 2 Portman Street, London W1h 6du (“Cop”); (2) Conocophillips Petroleum Limited, a Company Incorporated in England and Wales (Company Number 01247477), Having Its Registered Office at Portman House, 2 Portman Street, London W1h 6du; And

from 10-Q 54 pages Membership Interest Purchase Agreement by and Among Sm Energy Company and Potato Creek LLC as Sellers and Endeavour Operating Corporation as Buyer Dated July 17, 2011

from 10-Q 61 pages Purchase and Sale Agreement Between Sm Energy Company, Potato Creek, LLC, Open Flow Gas Supply Corporation, and Sj Exploration LLC, Sellers and Endeavour Operating Corporation Buyer Dated July 17, 2011

from 10-K 58 pages Dated November 23, 2010 (1) Shell Ep Offshore Ventures Limited and (2) Endeavour Energy Uk Limited Sale and Purchase Agreement Relating to Licence P.057, Block 21/9

from 10-K 67 pages Dated November 23, 2010 (1) Shell U.K. Limited and (2) Endeavour Energy Uk Limited Sale and Purchase Agreement Relating to Licence P.255, Block 22/6a North

from 10-Q 45 pages Agreed Form Documents Referred to in This Agreement

from 8-K/A 46 pages Certain Information (Indicated by Asterisks) in This Exhibit Has Been Omitted and Filed Separately With the Securities and Exchange Commission. Confidential Treatment Has Been Requested With Respect to the Omitted Portion. Purchase and Sale Agreement Between Cohort Energy Company “Seller” and Endeavour Operating Corporation “Purchaser” Dated as of November 20, 2009

from 8-K/A 21 pages Certain Information (Indicated by Asterisks) in This Exhibit Has Been Omitted and Filed Separately With the Securities and Exchange Commission. Confidential Treatment Has Been Requested With Respect to the Omitted Portion. Purchase and Sale and Participation Agreement

from 8-K >50 pages Dated 26th May 2006 Paladin Resources Limited (1) Endeavour Energy Uk Limited (2) Endeavour International Corporation (3) Agreement Granting Put and Call Options Over the Entire Issued Share Capital of Talisman Expro Limited Cms Cameron McKenna Llp Mitre House 160 Aldersgate Street London Ec1a 4dd T +44(0)20 7367 3000 F +44(0)20 7367 2000 Ref: Jpk/Mit2.31a/0z6417.00139 1

from 8-K ~20 pages Endeavour International Corporation and Salamander Energy (Thailand) Limited Agreement for the Sale and Purchase of 94.77% Interest in Pht Partners, L.P. 1 Contents

from 8-K ~10 pages Ltr Ref L6028-Ip 1 November 2004 to the Minority Stockholders of Oer Oil as Re: Conditional Offer to Buy Shares of Stock

from 8-K ~20 pages Share Sale and Purchae Agreement

from 8-K ~50 pages Agreement and Plan of Merger