Study On Main Controlling Factors For Hydrocarbon Accumulation In Lei Jiazhuang Area Of Shulu Sag

Shulu sag in Jizhong depression is located in the south,east west fault super single faulted depression.Lei Jiazhuang area is located in the south of Shulu sag,study area,reservoir and cap collocation is reasonable,abundant oil and gas resources in the area of exploration in recent years has made some new breakthrough,but because the fault distribution density,reservoir conditions and distribution of oil and water,oil and gas reservoir characteristics is not deep enough,the next step the exploration direction of the area is still uncertain.This paper analysis area Lei Jiazhuang sequence,sedimentary and tectonic features of various forming conditions,analysis has found oil gas accumulation,accumulation characteristics and main controlling factors of accumulation of oil and gas in the area to Lei Jiazhuang,the favorable zones of exploration in the future.Based on the study of the basic petroleum geology,it is considered that the study area has good hydrocarbon source conditions,favorable reservoir distribution,stable caprock conditions,favorable migration conditions and favorable trap conditions.Different tectonic belt of the typical oil and gas reservoirs in the selection of Lei Jiazhuang,on oil and gas accumulation conditions,a comprehensive analysis of the reservoir characteristics that Lei Jiazhuang area structure,strata,lithology and compound four kinds of oil and gas reservoir;analysis of elements migration system and accumulation of oil and gas migration system summary,pattern research area there are two main types: fault permeability reservoir type migration system and unconformity reservoir permeability type carrier system.Based on the analysis of distribution characteristics in vertical and horizontal research area of oil and gas reservoirs,through comprehensive analysis to clarify the main controlling factors of hydrocarbon accumulation in Lei Jiazhuang: control the distribution of source rock reservoir distribution;effective control of oil and gas accumulation trap;fault sealing is a the key to the accumulation of oil and gas reservoir;unconformity and effective sand body connectivity control slope belt of oil and gas distribution and enrichment.