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塔里木库车前陆盆地构造格架和含油气系统
The Structural Framework and Petroleum System of Kuche Foreland Basin in Tarim Area
【摘要】 塔里木库车前陆盆地叠置于中生代陆内坳陷沉积层序之上,这一特征决定了库车中生界油气系统中有效烃源岩的展布及油气的生成、运移、聚集和分布规律。库车前陆盆地在中生代发育两套三类有效烃源岩,与此对应,形成了三类原油:湖相泥岩生成的油、煤系泥岩生成的油和煤岩生成的油。据此可以识别出三个含油气系统:T2-3k+T3h湖相泥岩含油气系统、T3t+J1+2煤系泥岩含油气系统以及T3t+J1+2煤岩含油气系统。这三个含油气系统在油源、圈闭、运移类型和保存条件等方面不尽相同,各具特色,形成了丰富多彩的油藏、气藏、凝析油气藏、油苗、油砂及井下油气显示。
【Abstract】 Tian Zuoji Hu Jianyi Song Jianguo. Tian Zuoji Senior Engineer Petroleum Geology Exploration Department PetroChina Tarim Oil CNPC Korla 841000 China Abstract Kuche foreland basin is superimposed over depositional sequences of the Mesozoic inner continental depression which controlled distribution of effective source rocks and hydrocarbon generation migration accumulation and distribution in Kuche Mesozoic petroleum system. In Mesozoic there existed two sets or three kinds of effective source rocks developed in the foreland basin and three kinds of oils were formed correspondingly including the oils generated from lake peat coal measure mudstone and coal stone. According to these three categories of petroleum systems can be identified these are T2-3k+T3h lake peatT3t+J1+2 coal measure mudstone and T3t+J1+2coal stone petroleum systems which appear different features in source trap migration type and reservation conditions forming various oil fields gas fields condensate fields oil seepage oil sand and borehole oil/gas shows.
【Key words】 Tarim basin Kuche depression Foreland basin Structural evolution Source correlation Petroleum system;
- 【文献出处】 新疆石油地质 ,XINJIANG PETROLEUM GEOLOGY , 编辑部邮箱 ,2000年05期
- 【分类号】P618.13
- 【被引频次】33
- 【下载频次】354