Research On Characteristics Of Chang6Reservoir In Suijing Oil Feild

Chuankou oilfield belongs to Yanchang Oilfield, located in Yan’an City, ShaanxiProvince, northeast of the Kawaguchi Township,east Yaodian oilfield..Oil of surface coveredby Quaternary loess is a typical loess tableland topography,surface ravines,hilly staggeredcomplex terrain.Chang6is the main production layer in Triassic Yanchang Formation.In1992,it has put intoproduction, in2002,its annual oil production was more than200000tons, and in2004,annual oil production exceeded500000tons,at present, it still maintained at450000tons.Due to consecutive years of rapid real estate development,the stable oil productionis getting more and more difficult,to maintain stable production has become an important taskin Chuankou oilfield..In this study, based on the results of previous studies using fine stratigraphic divisionprinciple,reservoir sedimentology,logging geology geology and other related disciplines and todevelop theoretical approach as a guide, a comprehensive analysis of a variety of sedimentaryfeatures.Application cores, logs and other information to judge the area reservoirs deeplake,mainly developing fan facies,outer fan facies.Conjugates sources were deposited equaldistribution characteristics of sand..On the characteristics of a comprehensive description andevaluation,based on the summed up Kawaguchi oilfield enrichment law,and the stable blockfavorable measures proposed for the study area next exploration provides a new basis.