【摘要】 以地质背景为基础,结合单井、地震等资料,通过地震相以及沉积相的研究,将南苏门答腊盆地J区块始新统-中新统划分为6个三级层序,其中Intra-Gumai组位于SQ4的高位体系域。研究区SQ4高位体系域发育5种类型沉积相:三角洲平原、三角洲前缘、前三角洲、浊积体及浅海陆棚。分析认为三角洲前缘砂体为Intra-Gumai组的主要勘探目标,发育水下分流河道、河口坝、水下分流间湾等有利储集体。更多还原

【Abstract】 Based on the geological background,combined with single well and seismic date,through the study of seismic facies and sedimentary facies,the Eocene to Miocene strata in J Block of the Southern Sumatra Basin were divided into six three-grade sequences,the Intra-Gumai Formation was located in the highstand system tract of SQ4.In the highstand system tract of SQ4,there develops five types of sedimentary facies,including delta plain,delta front,front delta,turbidite and shallow sea shelf.Analysis shows that the delta front sand body was the main exploration target of Intra-Gumai Formation,there develop beneficial reservoirs such as subsea distributary channel,mouth bar,distal sandbar,and subsea inter-distributary bar,etc.更多还原