【摘要】 通过对塔北地区120口井的录井资料、测井资料和部分岩心资料进行综合分析,对近2.5万km的二维地震剖面进行地震相分析,认为塔北地区侏罗系主要发育冲积扇、辫状河、辫状河三角洲、扇三角洲、滨浅湖和半深湖6种沉积相,以辫状河三角洲和扇三角洲最为发育。辫状河三角洲主要在英买力、东河塘、跃南、轮古西、哈得逊、草南和觉马1井南地区发育,扇三角洲主要在轮南和草湖地区发育,辫状河主要在马纳1井—马纳3井—英买3井—跃南1井—哈得5井区、英买6井区和塔北地区东南部发育,滨浅湖和半深湖主要在群克尔地区发育。三角洲分流河道砂体、扇三角洲平原水上分流河道砂体、辫状河道砂体和塔北地区东部发育的浊积砂体是寻找岩性圈闭的有利勘探目标。更多还原

【Abstract】 According to the comprehensive analysis on the logging data,well logging data,and well cores testing data of 120 wells and the seismic facies of 25000 kilometers long two-dimensional seismic sections of Tabei Area at the same time,the following conclusions are able to draw from.Six sedimentary facies have developed in Jurassic in Tabei Area;they are alluvial fan,braid river,braid river delta,fan delta,littoral-shallow lake,and half-deep lake.Among of them,the braid river delta and fan delta have most widely developed.The braid river deltas have mainly distributed in the area of Yingmaili,Donghetang,Yuenan,western of Lungu,Hadexun,and the southern area of Caohu and Juema.The fan deltas have mainly distributed in the areas of Lunnan and Caohu.The braid rivers have mainly distributed in the areas of Mana 1-Mana 3-Yingmai 3-Yuenan 1-Hade well blocks,Yingmai 6 well block,and southeast of Tabei Area.Littoral-shallow lake and half-deep lake have mainly distributed in Qunkeer Area.The alluvial fan has mainly distributed in the west part of Mana 3 well block and mountain front zones of Kuqa depression.According to the analysis,the aquatic bifurcating channels and subquatic distributary channels of the braid river delta,the bifurcating channels of the fan delta plain,braid river channel sandbody,and the turbinate sandbody located in eastern part of the Tabei Area are the prospective objects for finding lithologic trap.更多还原