| 露头油藏的形成条件及成藏模式 |
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| 引用本文： | 秦长文,庞雄奇,姜振学.露头油藏的形成条件及成藏模式[J].地球科学,2004,29(3):323-326. |
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| 作者姓名： | 秦长文 庞雄奇 姜振学 |
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| 作者单位： | 1.石油大学石油天然气成藏机理教育部重点实验室, 北京 102249 |
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| 基金项目： | 国家重点基础研究发展规划“973”项目“中国典型叠合盆地油气形成富集及分布预测”(G19990 43 3 ) |
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| 摘 要： | 露头油藏是一种潜水面控制的特殊油藏, 研究它可以丰富石油地质理论和指导干燥盆地的勘探.通过理论研究和对吐哈盆地七克台油田分析认为, 露头油藏形成于潜水面埋深较大、油源丰富、发育露头圈闭的盆地.这种油藏有2种成藏模式, 一种是在削顶背斜的翼部形成的, 另一种是在侧向岩性封堵的单斜上形成的.露头油藏具有埋藏浅(深度几十至几百m)、形成时间晚、储集层物性好(孔隙度一般大于1 5 %)的特征。
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| 关 键 词： | 露头油藏 潜水面 露头背斜 单斜 七克台油田 |
| 文章编号： | 1000-2383(2004)03-0323-04 |
| 收稿时间： | 2003-10-30 |
Geological Conditions and Entrapment Models of Outcrop Trap Reservoirs |
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| QIN Chang-wen.Geological Conditions and Entrapment Models of Outcrop Trap Reservoirs[J].Earth Science-Journal of China University of Geosciences,2004,29(3):323-326. |
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| Authors: | QIN Chang-wen |
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| Institution: | QIN Chang-wen~ |
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| Abstract: | Outcrop oil reservoir is a special reservoir controlled by water table. Theoretical analyses and detailed studies of the Qiketai oilfield in the Tuha basin showed that the outcrop oil reservoirs were formed in basins with deeply-buried water table, rich source of oil and outcrop traps. There were two entrapment models for the outcrop reservoirs. One model was that outcrop reservoirs developed in the wing of an outcrop anticline. The other model was that the outcrop reservoir occurred in the monocline that was laterally sealed by lithology. The outcrop reservoirs were usually characterized by small burial depth (tens to hundreds of meters), late accumulation and usually good reservoir porosity and permeability (the porosity was usually higher than 15%). |
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| Keywords: | outcrop trap reservoir water table outcrop anticline monocline Qiketai oilfield |
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