台湾北方海域东引岛盆地南段油气潜能评估  

The Hydrocarbon Potential Evaluation of the South Area of Tungingtao Basin,Nothern Offshore Taiwan

作　　者：陈尧堂 钟火盛 

机构地区：[1]中国石油股份有限公司

出　　处：《断块油气田》1995年第2期8-14,31,共8页Fault-Block Oil & Gas Field

摘　　要：运用中油公司于台湾北方海域东引岛盆地南段约3200km2范围震测资料，进行此盆地的构造演化及沉积体系综合性研讨，认为盆地张裂期间是以断块旋转方式形成，盆地可能未经区域性上抬即下陷。因此湖相沉积可能仅存在于下古新统下部，下古新统上部可能已进入半咸水及至咸水的环境。粗粒之沉积物，可能存在于下古新统地层层序A及层序B上覆砂体中。此等粗粒沉积物富含长石，利于次生孔隙之生成，成为良好油气储集层。层序B及C可能多细颗粒沉积物，富含木型有机质，既可为盖层又可为生油岩。因此认为本研究区及与其地质状况相若之盆地，均有多种油气封闭类型存在。鉴于盆地颇具油气探勘潜能，建议择一构造高区，针对潜山封闭形态进行钻探。Utilizing the seimic data on 3200 km2 area of Tungingtao Basin,Northern Offshore Taiwan,obtained by Chinese Petroleum Corp.,the authors study the tectonic evolution and depositional systems of the basin comprehensively,and think it was formed by block rotation during its stretching period without undergoing regional uplifting and sagging. Therefore,lacustrine deposit can only exist in the low section of the early Paleocene,and its upper section has been in brackish water and salt water environment' Coarse sediments only exist in sand body overlaying sequence A and B of the low section in the early Paleocene,they are rich in feldspar and easily creat secondary pore,so they can be good reservoir rock. Sequence B and C with much fine sediments,rich in wood organic matter,can be cap rock and source rock. Hence,we think our research area or other basin similar to it in geological background have several varieties of traps. Because of the good exploration potential of the basin,we suggest choosing a high structure section to drill and survey according to the shape of the subterranean traps.

关 键 词：断块 旋转 地震地层学 储集层评价 生油岩评价 远景评价 东引岛盆地 南 

分 类 号：TE5[石油与天然气工程—油气田开发工程]