Study On Sedimentary Microfacies Of Fuyu Oil Layer In Qingxin Oilfield

For Qingxin oilfield,where the stratigraphic framework is not uniform and the plain sand body is not clear,accurate prediction of the distribution characteristics of sand bodies in the oilfield is the most important task to ensure the stable production and precise layout of the development plan.The study area of Fuyu reservoir by multi source system and sparse pattern influence factors such as uneven distribution,direction and geometry size of sedimentary microfacies sand body is not clear,therefore,need to adopt the combination of well and seismic and other research area facies research,aimed at the high new Fuyu oil the next step in the development of.The celebration of core,logging and 3D seismic data of Fuyu reservoir in new fields,and with the high resolution sequence stratigraphy and sedimentology as the theoretical basis,to carry out the provenance system analysis,sedimentary unit classification,identification,analysis of sedimentary facies and sand body microfacies drawing oil control effect,the results showed that:(1)the provenance is mainly the northeast,the Qing Fuyu reservoir new oilfield is mainly affected by the Northeast Qinggang depositional system;(2)Fuyu formation sedimentary period of Songliao basin facies in delta plain,affected by climate and lake level fluctuation influences the development of multiple sets of stable distribution of mudstone layer in the reservoir internal standard;(3)delta facies sedimentary facies of Fuyu formation is mainly developed Qing new fields,along the direction of source which contains parfacies divided into delta plain Facies and delta front subfacies;(4)because the distribution of distributary channel sand bodies is large and the sedimentary thickness is large,Qing Xin oil field oil in Fuyu oilfield mainly distributes in distributary channel microfacies.