Study On The Sedimentary Fades Of Xin'an Cun And Wuyun Subdivision Group Of Fangzheng Fault Depression

Under the theory of sequence stratigraphy and sedimentology theory andapplication of seismic, well logging, drilling, etc., in comprehensive study Baoquanlinggroup and Darien and the group at the same time, are summarized, Founder riftXin'an Village+sequence of the dark cloud formation in the identification mark on thisbasis to build a sequence stratigraphic framework, and will eventually Xinan Village+Wuyun internal division of two third-order sequence, find the maximum floodingsurface within the third-order sequence,three sequence internal division to become arising half cycle and falling half cycles.On the basis of previous studies, sequence stratigraphic framework sedimentarysystem in Xinan Village and Wuyun of time and space distribution, host factors andthe evolution of a systematic and comprehensive analysis and research identified thefan delta front favorable oil and gas reservoir of the type of underwater distributarychannel of the most favorable types of microfacies, starting from the point of view ofthe sequence that to Founder rift zone target layer of Xinancun and Wuyun SQ4sequence for the most favorable increase in the reservoir, which SQ4usequencewithin half cycle SQ4, development of good sedimentary facies types, including thelakebed fan and fan delta front of the sequence the upper part of a good cap with wantto match with the petroleum geological conditions become favorable reservoir finalSQ4is the most favorable exploration strata.