2011. In this annual information form - Encana

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Proved Plus Probable Reserves (Forecast Prices and Costs; Before Royalties) Canadian Division Natural Gas (Bcf) Coalbed Methane Shale Gas Other Total Oil & NGLs (MMbbls) Total (Bcfe) December 31, 2010 2,273 1,013 6,129 9,415 85.0 9,925 Extensions and improved 192 240 783 1,215 71.2 1,641 recovery Technical revisions (62) 147 48 133 5.9 168 Discoveries - - 26 26 2.4 41 Acquisitions 31 79 67 177 0.3 179 Dispositions (6) (51) (243) (300) (10.0) (360) Economic factors (37) (40) (78) (155) 0.6 (151) Production (161) (34) (361) (556) (6.0) (592) December 31, 2011 2,230 1,354 6,371 9,955 149.4 10,851 USA Division Natural Gas (Bcf) Coalbed Methane Shale Gas Other Total Oil & NGLs (MMbbls) Total (Bcfe) December 31, 2010 - 6,973 9,619 16,592 76.7 17,052 Extensions and improved - 2,669 1,122 3,791 5.8 3,826 recovery Technical revisions - (1,184) (1,755) (2,939) (7.6) (2,984) Discoveries - - 1 1 1.9 12 Acquisitions - - 73 73 1.3 81 Dispositions - (1,386) (270) (1,656) (1.9) (1,667) Economic factors - (229) (85) (314) (0.1) (315) Production - (293) (564) (857) (4.3) (883) December 31, 2011 - 6,550 8,141 14,691 71.8 15,122 Total Encana Natural Gas (Bcf) Coalbed Methane Shale Gas Other Total Oil & NGLs (MMbbls) Total (Bcfe) December 31, 2010 2,273 7,986 15,748 26,007 161.7 26,977 Extensions and improved recovery 192 2,909 1,905 5,006 77.0 5,467 Technical revisions (62) (1,037) (1,707) (2,806) (1.7) (2,816) Discoveries - - 27 27 4.3 53 Acquisitions 31 79 140 250 1.6 260 Dispositions (6) (1,437) (513) (1,956) (11.9) (2,027) Economic factors (37) (269) (163) (469) 0.5 (466) Production (161) (327) (925) (1,413) (10.3) (1,475) December 31, 2011 2,230 7,904 14,512 24,646 221.2 25,973 Encana Corporation A-9 Canadian Protocol Reserves Disclosure Annual Information Form (prepared in US$)
Undeveloped Reserves, Significant Factors or Uncertainties and Future Development Costs Undeveloped Reserves Proved and probable undeveloped reserves are attributed where warranted on the basis of technical merit, commercial considerations and development plans. These development opportunities are being pursued at a pace dependent on capital availability and allocation. As a result, development is scheduled beyond the next two years. All of the proved and probable undeveloped reserves at December 31, 2011 are scheduled for development within the next five and eight years respectively in Canada and the United States. The following table discloses, for each product type, the volumes of proved undeveloped reserves that were first attributed in each of the three most recent financial years and, in the aggregate, before that time. Proved Undeveloped Reserves Natural Gas (Bcf) Coalbed Methane Shale Gas Other Total Oil & NGLs (MMbbls) First Attributed Total at Year End First Attributed Total at Year End First Attributed Total at Year End First Attributed Total at Year End First Attributed Total at Year End Prior 923 923 368 368 4,611 4,611 5,902 5,902 42.1 42.1 2009 - 559 832 1,217 1,222 4,500 2,054 6,276 11.6 38.1 2010 282 688 1,161 2,808 1,105 4,449 2,548 7,945 18.7 53.8 2011 73 651 657 2,981 914 3,942 1,644 7,574 21.8 81.8 The following table discloses, for each product type, the volumes of probable undeveloped reserves that were first attributed in each of the three most recent financial years and, in the aggregate, before that time. Probable Undeveloped Reserves Natural Gas (Bcf) Coalbed Methane Shale Gas Other Total First Attributed Total at Year End First Attributed Total at Year End First Attributed Total at Year End First Attributed Total at Year End Oil & NGLs (MMbbls) First Attributed Total at Year End Prior 166 166 593 593 4,671 4,671 5,430 5,430 46.9 46.9 2009 - 182 1,771 2,264 1,421 4,419 3,192 6,865 10.1 41.8 2010 67 290 2,289 3,889 1,459 4,901 3,815 9,080 12.9 42.6 2011 36 232 2,017 3,880 1,176 4,085 3,229 8,197 15.5 52.7 Encana Corporation A-10 Canadian Protocol Reserves Disclosure Annual Information Form (prepared in US$)
Page 1 and 2: Encana Corporation Annual Informati
Page 3 and 4: Introduction This is the annual inf
Page 5 and 6: General Development of the Business
Page 7 and 8: Completed the divestiture of non-co
Page 9 and 10: Encana’s operations are focused o
Page 11 and 12: Production (After Royalties) Natura
Page 13 and 14: In 2010, Encana signed a deep cut p
Page 15 and 16: Production (After Royalties) Natura
Page 17 and 18: Market Optimization Market Optimiza
Page 19 and 20: Reserves and Other Oil and Gas Info
Page 21 and 22: Competitive Conditions All aspects
Page 23 and 24: A comprehensive community investmen
Page 25 and 26: (9) Mr. Harrison was a director of
Page 27 and 28: Audit Committee Information The ful
Page 29 and 30: External Auditor Service Fees The f
Page 31 and 32: Credit Ratings The following inform
Page 33 and 34: Legal Proceedings The Company is in
Page 35 and 36: Additionally, the U.S. and Canadian
Page 37 and 38: Encana does not operate all of its
Page 39 and 40: Transfer Agents and Registrars The
Page 41 and 42: Assumptions with respect to forward
Page 43 and 44: Reserves Data (Canadian Protocol) S
Page 45 and 46: Summary of Net Present Value of Fut
Page 47 and 48: Pricing Assumptions (Forecast Price
Page 49: Probable Reserves (Forecast Prices
Page 53 and 54: Abandonment, Tax and Costs Incurred
Page 55 and 56: Landholdings with No Attributed Res
Page 57 and 58: Production Volumes (Before Royaltie
Page 59 and 60: Per-Unit Results (Before Royalties)
Page 61 and 62: Netbacks by Country (Before Royalti
Page 63 and 64: Executed as to our report referred
Page 65 and 66: Appendix D - U.S. Protocol Disclosu
Page 67 and 68: Notes: (1) Definitions: a. “Net
Page 69 and 70: Standardized Measure of Discounted
Page 71 and 72: Changes in Standardized Measure of
Page 73 and 74: Capitalized Costs and Costs Incurre
Page 75 and 76: Notes: (1) Fee lands are those land
Page 77 and 78: Production Volumes (After Royalties
Page 79 and 80: Netbacks by Country (After Royaltie
Page 81 and 82: Appendix E - Audit Committee Mandat
Page 83 and 84: Meetings Committee meetings may, by
Page 85 and 86: Quarterly Financial Statements 3. R
Page 87 and 88: 22. Obtain and review a report from
Page 89: Other Matters 38. Review and concur

2011. In this annual information form - Encana

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