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SUPPLEMENTARY FINANCIAL INFORMATION Gas and Oil (Details) | Dec. 31, 2015 | Dec. 31, 2014
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SUPPLEMENTARY FINANCIAL INFORMATION Gas and Oil |  |
Gas (MMCF) Proved developed and undeveloped reserves - 1/1/2015 | 2,866 | 2,887
Gas (MMCF) Purchase of oil and natural gas properties in place | 0 | 0
Gas (MMCF) Discoveries and exclusions | 0 | 0
Gas (MMCF) Revisions | (94) | 138
Gas (MMCF) Sales of oil and gas properties in place | 0 | 0
Gas (MMCF) Production | (168) | (159)
Gas (MMCF) Proved developed and undeveloped reserves - 12/31/2015 | 2,604 | 2,866
Gas (MMCF) Proved developed at beginning (of year) | 698 | 719
Gas (MMCF) Proved developed reserves at end (of year) | 504 | 698
SUPPLEMENTARY FINANCIAL INFORMATION Oil (MBBLS)(Details) |  |
Oil (MBBLS) Proved developed and undeveloped reserves - 1/1/2014 | 139 | 173
Oil (MBBLS) Purchase of oil and natural gas properties in place | 0 | 0
Oil (MBBLS) Discoveries and exclusions | 0 | 0
Oil (MBBLS) Revisions | (69) | (24)
Oil (MBBLS) Sales of oil and gas properties in place | 0 | 0
Oil (MBBLS) Production | (12) | (10)
Oil (MBBLS) Proved developed and undeveloped reserves 12/31/2014 | 58 | 139
Oil (MBBLS) Proved developed at beginning (of year) | 70 | 105
Oil (MBBLS) Proved developed reserves at end( of year) | 59 | 70

X
- Definition Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. + References No definition available. + Details
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- Definition Gas (MMCF) Production in place + References No definition available. + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References No definition available. + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References No definition available. + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References No definition available. + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References No definition available. + Details
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- Definition Gas (MMCF) Purchase of oil and natural gas properties in place + References No definition available. + Details
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- Definition Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors. + References No definition available. + Details
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- Definition Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. + References No definition available. + Details
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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References No definition available. + Details
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- Definition Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors. + References No definition available. + Details
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