Study on the Pool forming Mechanism of High Content CO2 Gas Pools in Changling Fault-depression, South Songliao Basin
Received date: 2010-12-07
Revised date: 2011-04-11
Online published: 2011-08-10
Based on the dissections of the typical high content CO2 gas pools in Changling fault-depression,south Songliao basin,a comparative analysis was taken on the genesis,distribution characteristics and their differences of the gases of Changshen 1,2,4,6,7 high content CO2 gas pools in deep layer.Results showed that the type of basement faults determined the relative good or bad conditions for mantle-derived CO2 and hydrocarbon gas accumulations,which further determined the CO2 content in gas pools and the accumulation layer of CO2 -containing gas.The model of gas migration and accumulation in Changling fault-depression was established,which reasonably explains the gas exploration status and complex distribution problems.What's more,it provides a theoretical basis for prediction of CO2 and hydrocarbon gas before drilling.
LU Xue-Song, WEI Li-Chun, SONG Yan, LIU Shao-Bo, FU Xiao-Fei . Study on the Pool forming Mechanism of High Content CO2 Gas Pools in Changling Fault-depression, South Songliao Basin[J]. Natural Gas Geoscience, 2011 , 22(4) : 657 -663 . DOI: 10.11764/j.issn.1672-1926.2011.04.657
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