西太平洋板块俯冲及松辽盆地晚期油气成藏  

UNDERTHRUST OF WEST PACIFIC PLATE AND LATE HYDROCARBON RESERVOIR FORMING IN SONGLIAO BASIN

作　　者：李树青[1] 李志军[2] 

机构地区：[1]中国石化国际石油勘探开发有限公司,北京100083 [2]重庆科技学院石油工程学院,重庆401331

出　　处：《大庆石油地质与开发》2009年第3期6-9,共4页Petroleum Geology & Oilfield Development in Daqing

摘　　要：松辽盆地第三纪以来的构造运动受西太平洋板块俯冲与日本海扩张的共同作用，该时期是松辽盆地成藏与定型的重要时期。白垩纪以后松辽盆地经历了构造反转的演化阶段，挤压背景形成了一系列的浅层构造，老断层的开启为油气运移开辟了通道，挤压背景所造成的构造应力强度在空间上的变化为晚期油气成藏提供了动力。结合烃源岩的生排烃史认为，西太平洋板块的俯冲与日本海的扩张所形成的挤压背景对于松辽盆地晚期成藏起着重要作用。Tectonic movement of Songliao Basin since Tertiary is the co-effect of West Pacific Plate underthrust and the extension of Japan Sea. This period is critical for the formation of Songliao Basin. Since Cretaceous, Songliao Basin experienced reverse evolutionary phase when a lot of superficial structures formed under compression background. The opened old faults provided migration path for oil and gas, and the change of stress intensity in space caused by compression background offered power for later hydrocarbon accumulation. In combination with hydrocarbon accumulation history, this paper proposes that the compression background formed by underthrust of West Pacific Plate and extension of Japan Sea has significance for late hydrocarbon reservoir forming in Songliao Basin.

关 键 词：西太平洋板块 日本海扩张 松辽盆地 晚期成藏 

分 类 号：TE121[石油与天然气工程—油气勘探]