Sedimentary Characteristics and Favorable Reservoir Prediction of the Second Member of the Triassic Baijiantan Formation in Mahu1 Well Area
This study addresses the unclear understanding of the sedimentary characteristics and favorable reservoir distribution of the Second Member of the Triassic Baijiantan Formation in the Mahu1 Well Area,as well as the diffi-culties in reservoir evaluation and reserve calculation.A fine division and prediction of sedimentary facies and favor-able reservoir distribution in the Second Member of the Baijiantan Formation were conducted by using integrated da-ta such as logging,well testing,oil testing,and seismic data,and techniques such as sedimentary facies division,cor-relation of sand body connected well,seismic attribute analysis,seismic acoustic impedance inversion,and stratal sli-cing.The results indicate that the Second Member of the Baijiantan Formation witnesses the main development of delta front subfacies that can be further divided into sedimentary microfacies such as underwater distributary chan-nels,inter-distributary channels,and sheet sands.Its main body consists of underwater distributary channels that ex-hibit a tongue-like distribution from north to south.The underwater distributary channels at the delta front serve as favorable reservoir facies,primarily distributed in the central and northern parts of the Mahu1 Well Area.This re-search provides new insights into the distribution range of favorable reservoirs in the Second Member of the Baijian-tan Formation,which is of significant importance for further reservoir evaluation,reserve confirmation,and develop-ment in the study area.
Mahu1 Well AreaSecond Member of Baijiantan Formationsedimentary faciessedimentary modelres-ervoir prediction
万方数据
维普
