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| 基金项目：中国地质调查局地质调查项目（DD20191009，DD20211362） |
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| 摘要： |
| 印度扇近海盆地尚处于勘探早期，利用二维地震、钻井等各类资料，对该区的油气地质条件和含油气系统特征进行研究。结果表明：印度扇近海盆地发育巨厚的新生代地层，烃源岩主要为古新—始新世暗色泥页岩，储层主要为中新统和上更新统河道与席状砂岩、古近系生物礁碳酸盐岩，圈闭主要为基底火山上部的碳酸盐岩圈闭、披覆于基底火山之上的背斜圈闭、基底火山侧向遮挡形成的地层圈闭、默里海脊东南侧地层上超尖灭形成的地层圈闭、中新统下切河道砂体形成的岩性圈闭。印度扇近海盆地具备基本的油气地质条件和时空配置关系，含油气系统的关键时期为中新世末。 |
| 关键词：油气地质条件 印度扇近海盆地 巴基斯坦 |
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| Abstract: |
| The offshore Indus Basin is still in the early stage of exploration. In this paper, the petroleum geological conditions and oil-bearing system characteristics of the area were studied by using 2D seismic and drilling data. Results showed that the offshore Indus Basin developed huge thick Cenozoic formation. The Paleocene-Eocene dark mudstone is the main source rock. The Miocene and Upper Pleistocene river channel, and sheet-shaped sandstone, and the Paleogene bio herm carbonate rocks are the main reservoirs. Five trap types have been identified in this basin, which include carbonate trap in the upper part of the basement volcanic rock, anticlinal trap overlyingthe basement volcanic rock, stratigraphic trap formed by the lateral shield of basement volcanic rock, stratigraphic trap formed by the pinch-out of the southeast side of the Murray Ridge, and lithologic trap formed by the Miocene under-cutting channel sand bodies. The offshore Indus Basin has the basic petroleum geological conditions and spatial-temporal distribution relations. The key moment of the oil-gas system is the end of the Miocene. |
| Keywords:petroleum geological condition offshore Indus Basin Pakistan |
| 刘金萍,王改云,简晓玲,等.巴基斯坦印度扇近海盆地油气地质条件分析[J].地质学刊,2022,46(4):351-357 |
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