Natural gas play targets in Gulong area,Songliao Basin

The boundary faults controlling the fault depressions in Songliao Basin underwent the complicated developing process,and all of the big boundary faults developed from the independent stages to the interaction and interlinked stages of the respective sections.The complicated dynamic processes controlled the different fault depression structures.Compared with the boundary faults in the Xujiaweizi area,most of the developing levels are low in Gulong.The fault-depressions in the Gulong area are distributed discontinuously with small sedimentary rates,and there is no extensive source rock.The source rock exists in the isolated small fault depressions.The source dominating reservoir suggests that the potential favorable areas of the natural gas plays in the Gulong area should be located in the Maoxing fault depression,big fault depression in the south,and the key play zones should be located in the hemi-deep lake facies of Maoxing fault depression.