| 大港滩海地区石油地质特征及勘探潜力 |
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| 引用本文： | 王俊明,董树政,薛秀凤.大港滩海地区石油地质特征及勘探潜力[J].现代地质,2008,22(4). |
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| 作者姓名： | 王俊明 董树政 薛秀凤 |
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| 作者单位： | 中国石油,大港油田分公司滩海开发公司,天津,300280 |
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| 摘 要： | 大港滩海地区地处渤海湾盆地腹地,位于黄骅裂谷盆地东侧海岸线以东水深5 m线的地区,是古近纪以来发育形成的凹隆相间的复合构造区。该区自上而下发育4套生油层系,即东二段、沙一中段、沙二段、沙三段;储层发育,冲积扇、水下扇、三角洲、扇三角洲、辫状河三角洲、重力流、湖泊碳酸盐岩在滩海区广泛分布;8个二级正向构造带呈近东西向和北东南西向分布在凹陷之间,具有形成大—中型油气藏的先决条件。通过对工区地层、储层、构造、生油、成藏等石油地质条件的分析,阐述了油藏的成藏条件及油气富集规律;通过对各区带的地质条件和勘探开发现状分析,指出其油气勘探开发潜力。认为滩海地区虽然地表地下条件复杂、对勘探开发技术要求高、勘探开发成本高、风险大,但滩海区油气资源量大,成藏条件好,目前勘探开发程度低,是大港油田今后增储上产的现实领域。
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| 关 键 词： | 大港滩海 石油地质条件 油气藏 勘探潜力 |
Geological Characteristics and Petroleum Exploration Potential of the Dagang Shallow Water Area |
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| WANG Jun-ming,DONG Shu-zheng,XUE Xiu-feng.Geological Characteristics and Petroleum Exploration Potential of the Dagang Shallow Water Area[J].Geoscience——Journal of Graduate School,China University of Geosciences,2008,22(4). |
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| Authors: | WANG Jun-ming DONG Shu-zheng XUE Xiu-feng |
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| Abstract: | Dagang shallow water area,lying in interior region in Bohai Bay Basin,is located on 5 m water depth area in east seashore of Huanghua rift valley,and is the complicated structure area formed in Tertiary.This area from top to bottom develops four sets of main oil generative assemblage(Ed2,Es1z,Es2,Es3).Reservoirs develop;and alluvial fan,subsea apron,delta,fan delta,braided channel fan,gravity flow and lake carbonate rock are distributed abroad in the area.Eight second order positive structural belts approximately from east to west or from north to south in the sunken,have precondition to form large or medium-sized reservoir.This paper discusses the reservoir-forming conditions and pool abundance laws through analysis of petroleum geological conditions including the formation,reservoir,structure,oil generating,reservoir forming,and so on.The paper also points out potential in terms of the geological conditions and present developing situation.Conclusion has been drawn that Dagang shallow water area with abundant resources,good reservoir forming conditions and low exploration extent will be realm of reserves and production increasing in Dagang oilfield despite of its complicated subsurface conditions and needs of advanced exploration technology and high cost with high risk. |
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| Keywords: | Dagang shallow water area petroleum geological condition reservoir exploration potential |
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