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Operations and Production

Reserves

Operations and Production


International Sovereign Energy Corp.'s oil and gas reserves are determined by the independent petroleum consulting firm of Chapman Petroleum Engineering Ltd.

The Company experienced a marked shift in the make-up of its reserves during 2005. Gas now comprises approximately 62% of the proved plus probable reserve base.

The Company replaced its annual production and with new proved plus probable reserves which increased the net present value of the Company's reserves by 60% (at a 10% discount).

Total proved plus probable reserves increased by 10% over the January 2004 levels. Based on the Company's average production rates and proved plus probable reserves, our reserve life index is approximately nine years for oil and natural gas liquids and 17 years for natural gas.

The table below presents the Company's proved plus probable reserves before royalties as evaluated by Chapman Petroleum Engineering Ltd. as at January 1, 2006.

Reserves
  Proved Probable Total
Gas (mmcf) 1,990 9,052 11,042
Light & Med. Oil (mbbls) 122 108 230
Heavy Oil (mbls) 278 286 565
NGLs (mbls) 27 144 171
Total (mboe) 759 2,047 2,806

The table below represents the discounted net present value of future net revenue of the Company's reserves as at January 1, 2006.

Present Value of Reserves
$ Thousands
Present Value, before tax, discounted at
  10%
Proven   14,053
Probable   29,907
Total   43,960

Chapmam Petroleum Engineering Ltd. conducts continual surveillance and monitoring on a number of Benchmark product prices both locally and internationally. Based on historical data, current conditions and their view of the relevant political and economic trends, they independently prepare oil, gas and by-product price forecasts.




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