CAJ | 학술논문

通过对松辽盆地梨树断陷大量钻井岩心、测井资料及地震相的综合研究，对梨树断陷的沉积相特征及其演化研究表明，梨树断陷形成初期，基底被一组同生断裂切割，发育多个小型断陷，随着沙河子组沉积早期湖平面的上升，逐渐形成由桑树台断裂控制的箕状断陷，“西断东超、北超”的构造格局控制着统一水体的广盆沉积。具有深湖-半深湖相、滨浅湖、扇三角洲、三角洲及水下扇、浊积扇为主的沉积组合特征。断陷盆地的沉积演化经历了从裂陷初期的浅水湖盆-沼泽到半深湖-深湖，再到半深湖-浅湖，最后为滨浅湖-河流-三角洲的充填过程。据梨树断陷油气勘探开发成果及沉积相分析，梨树断陷深层有利的含油气储层在断陷时期各个层段均有发育，主要以扇三角洲前缘及三角洲前缘水下分流河道、河口坝微相和重力流水道砂体为主，有利储层主要分布于断陷北部杨大城子地区、东部斜坡的双龙-大榆树-小城子地区。
통과대송료분지리수단함대량찬정암심、측정자료급지진상적종합연구，대리수단함적침적상특정급기연화연구표명，리수단함형성초기，기저피일조동생단렬절할，발육다개소형단함，수착사하자조침적조기호평면적상승，축점형성유상수태단렬공제적기상단함，“서단동초、북초”적구조격국공제착통일수체적엄분침적。구유심호-반심호상、빈천호、선삼각주、삼각주급수하선、탁적선위주적침적조합특정。단함분지적침적연화경력료종렬함초기적천수호분-소택도반심호-심호，재도반심호-천호，최후위빈천호-하류-삼각주적충전과정。거리수단함유기감탐개발성과급침적상분석，리수단함심층유리적함유기저층재단함시기각개층단균유발육，주요이선삼각주전연급삼각주전연수하분류하도、하구패미상화중력류수도사체위주，유리저층주요분포우단함북부양대성자지구、동부사파적쌍룡-대유수-소성자지구。
According to the drilling cores, well logging and seismic facies data of the Lishu Fault Depression, the analyses of sedimentary features and evolution showed that the basement was cut by syngenetic fractures and seve-ral small fault depressions developed during the early stage. As lake plane rose during the early Shahezi period, a half-graben fault depression controlled by the Sangshutai Fault developed gradually. A structural pattern fea-tured by fault in the west and overlap in the east and north controlled wide basin deposition in an unified water system. The sedimentary assemblage was characterized by deep/semi-deep lake, shallow lake, fan delta, delta, submerged fan and turbidite fan. The fault depression developed from shallow lake basin-swamp, to semi-deep/deep lake, and to semi-deep/shallow lake, and finally to shallow lake-river-delta. The exploration and sedimen-tary facies analyses of the Lishu Fault Depression showed that favorable reservoirs generated in every formation during fault depression evolution, mainly as fan delta front and delta front underwater distributary channel, mouth bar microfacies and gravity channel sand body. The Yangdachengzi area in the north and the Shuanglong-Dayushu-Xiaochengzi area in the east were favorable for exploration.