Geological Comprehensive Evaluation Of Single Well Changshenlo In The South Of Songliao Basin

Well Changshen10located in the top of New legislation volcanic surface structural ofChangling of southern of Songliao Basin. The purpose is to implement the oil and gas contentof northern in Changling rift. In this evaluation,we major to depict these about the deepzone development of source,reservoir and seal rocks, summarize the basic features ofsource-reservoir-seal and the time-space matching relation,and knowledge of the conditionsof gas reservoir-forming and the major controlling factors which is a guiding in next stage ofprospecting in the Changling Fault Depression.In this paper it does systematic analysis and test,finally completed basic geological evaluationand main controlling factors.The evaluation of source rocks respectively by qualitativeevaluation and quantitative evaluation two aspects.The qualitative evaluation of source rockincludes three aspects, which are abundance, type and maturity of organic matter; quantitativeevaluation results in the work area given us the amount of hydrocarbon generation andexpulsion. Derived from the hydrocarbon source rock evaluation,the source rocks ofYingcheng achieved medium-good level of source rocks,and the total amount of gas is about96.729×1011m3. This area has two kinds of reservoir, the evaluation result of Clastic reservoirsand Volcanic reservoirs is not good,but it does little impact on gas accumulation. The sealevaluation study begins from macro and micro aspacts to mainly research seal conditions inthe area,the result shows good.Comprehensive study results show that, well Changshen10has favorable structuralposition.And the time of hydrocarbon accumulation and expulsion a lot and trap formationis matched.And have a good reservoir history matching relations.It is better for a largenumber of filling of oil and gas.And under the background of slope,the development of tightreservoir and direct cap is better to save tight gas,which has a large area and low abundance.