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Chinook Energy Inc. Announces Its December 31, 2012 Reserves and Operations Update

Page 8 of 14

Future Development Costs ("FDC")

NI 51-101 requires that future development costs be calculated including changes in FDC. Changes in forecast FDC occur annually as a result of development activities, acquisition and disposition activities and capital cost estimates that reflect the independent evaluators' best estimate of what it will cost to bring the proved undeveloped and probable reserves on production.

--------------------------------------------------------------------------------------------------------------------------------------------------------($ millions)----------------------------------------------------------------------------                                                         2012           2011----------------------------------------------------------------------------Proved Canada                                                  28.1           27.4 Tunisia                                                242.3          158.6----------------------------------------------------------------------------Total proved                                            270.4          186.0--------------------------------------------------------------------------------------------------------------------------------------------------------Proved Plus Probable Canada                                                  66.7           60.4 Tunisia                                                402.4          301.0----------------------------------------------------------------------------Total proved plus probable                              469.1          361.4--------------------------------------------------------------------------------------------------------------------------------------------------------


Chinook's approved 2013 budget includes the drilling of 13 wells (7.5 net) in Canada and 8.0 wells (6.1 net) in Tunisia.

NI 51-101 Finding and Development Costs ("F&D")

--------------------------------------------------------------------------------------------------------------------------------------------------------Total Proved Finding and Development                                   Three Cost ($ thousands, except per unit                                     year amounts)                                 2012      2011      2010     total----------------------------------------------------------------------------Capital expenditures excluding acquisitions and dispositions, abandonment and furniture and fixtures (unaudited)                   84,316   124,981    45,861   255,158Net change from previously allocated future development capital             78,689    20,471    19,107   118,267----------------------------------------------------------------------------Total capital including the net change in future capital              163,005   145,452    64,968   373,424----------------------------------------------------------------------------Reserve additions excluding acquisitions and dispositions (mboe)                                  4,151     2,671     2,404     9,226Total proved finding and development costs (per boe)                      $  39.27  $  54.45  $  27.02  $  40.47----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total Proved Plus Probable Finding                                     Three and Development Cost ($ thousands,                                     year except per unit amounts)                 2012      2011      2010     total----------------------------------------------------------------------------Capital expenditures excluding acquisitions and dispositions, abandonment and furniture and fixtures (unaudited)                   84,316   124,981    44,994   254,291Net change from previously allocated future development capital            103,880    31,893    30,026   165,799----------------------------------------------------------------------------Total capital including the net change in future capital              188,196   156,874    75,020   420,090----------------------------------------------------------------------------Reserve additions excluding acquisitions and dispositions (mboe)                                  4,682     2,877     4,090    11,649Total proved plus probable finding and development costs (per boe)      $  40.19  $  54.53  $  18.34  $  36.06--------------------------------------------------------------------------------------------------------------------------------------------------------

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