| ShiWu fault depression lies in southeastern uplift region ofsongliao basin,it is the best degrees of exploration by oilexploration of northeast bureau .it composes of shuanglongsecondary depressed,middle structure zone,east gentle slope zone,north gentle slope zone and west abrupt slope zone. It is an areaof 1700 square kilometers.its'stratum concludes huoshilingformation,shahezi formation,yingchengzu formation,dengloukuformation,quantou formation,qingshankou formation,yaojiaformation,nenjiang formation etc.Baseing on simulation of burial history for Shiwu faultdepression ,the author simulates hydrocarbon generating andexpulseing history .the author who combines depositional faciesand the tectonic evolution evaluates Hydrocarbon SourceRock,reservoir and caprocks of deep stratum in shiwu faultdepression.then the author concludes two models of formation ofreservoirs of deep stratum.There were a set of intermediate or acid volcanic rocks ,pyroclastic rocks, grey or grey-black mudstone,french greysandstone in the huoshiling formation of Shiwu fault depression.itshows it is alluvial-backswamp deposit and volcanism deposit. It was the best time for fault depression to develop during ofthe shahezi deposition.it developed mainly alluvial fan, which isclose with source areas,it is a set of grey or grey-brown sandstoneand conglomerate,which is main alluvial Coarse Claslic with coalyconstruct .it is mainly adlittoral lake basin and fan delta in themiddle,which sedimentary are a set of grey mudstone siltstone andconglomerate .it is deep water area,delta ,fan delta and subaqueousfan .its sediments are deep grey or grey-black mudstoneorconglomerate.it showed it is the time of water to advance. It was the time for basin to chang from fault depression sedimentto depression during denglouku formation ,which was filled andleveled up. The water was distributing more widely and becomedshallow. Its facies were alluvial plain and shallow lake,at the brimof basin facies were fan delta,subaqueous fan or alluvial fan.itsstones were mainly purple or grey-black mudstone with siltstonecoarsestone and grey-black mudstone,there were fuscous mudstoneand different size variedness sandstone and conglomerate. Baseing on erosion thickness,the author confirms the erosion ageand classifies stone types of every stratum,then the author dividesthree stone types and counts the amounts. The author calculatescompress coefficients of the three stone types through plenty ofsurveyed pore-depth data.lastly,the author backstripes every stataby the backstripping to come back original thickness of every epochstrata. Integrating tectonic features,the author works out burialhistory chart.Baseing on the burial history ,the author simulatesthe hydrocarbon generating and expulseing history. It was divided into two types of the burial history of Shiwu faultdepression,one was Quick and durative buried in the west basin-controlling fault side. There were a gigantic thickness ofsediment;The other was slow and durative buried in the east gentle slope. the author concludes that there were three petroleum systems:thefirst was J3h(J3h+K1sh+K1y),the second was K1sh(J3h+K1sh+K1y),thelast was K1y(K1sh+K1y+K1d+K1q) and the petroleum was divided two subpetroleum system in the yingchengzu formation. Hydrocarbon Source Rock of J3h(J3h+K1sh+ K1y) petroleum system waslake mudstone on the huoshiling formation, the reservoir was volcanic inthe huoshiling formation,shahezi formation and yingchengformation.the caprocks was local mudstone. The petroleum system wasauto-producting petroleum and auto-reservoir. Hydrocarbon Source Rock of K1sh(J3h+K1sh+K1y) petroleum systemwas deep lake or half deep lake mudstone in the shahezi formation ,thereservoir was sandstone of shahezi formation and yingcheng formation. Thecaprocks was local mudstone in the fault epoch or depression epoch.
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