| 成永生,陈松岭.渤海湾盆地南堡凹陷外围古生界油气成藏研究[J].地质找矿论丛,2008,(4):330-333,338 |
| 渤海湾盆地南堡凹陷外围古生界油气成藏研究 |
| STUDY ON THE PALEOZOIC HYDROCARBON POOL FORMING IN PERIPHERAL OF NANPU SAG,BOHAIWAN BASIN |
| 投稿时间：2007-08-21 修订日期：2008-11-13 |
| DOI：10.6053/j.issn.1001-1412.2008.4. 012 |
| 中文关键词: 碳酸盐岩 古生界 油气成藏 南堡凹陷 |
| 英文关键词:carbonate Paleozoic hydrocarbon pool forming Nanpu sag |
| 基金项目:高等学校博士学科点专项科研基金项目(20040533009);湖南省科技计划项目(05FJ3054)资助 |
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| 中文摘要: |
| 渤海湾盆地南堡凹陷为第三纪形成的箕状凹陷,是黄骅坳陷的二级构造单元之一.对南堡凹陷外围地区古生界油气成藏进行了分析研究,表明外围地区古生界碳酸盐岩不具备油气生成能力,油源来自于南堡凹陷下第三系,通过断层和不整合面进行长距离运移,并在构造高点进行富集,形成新生古储型油气藏.碳酸盐岩基质孔隙度差,原生孔隙基本不具备油气储集性能,晚期未充填构造裂缝乃油气运移与聚集的主要场所;岩溶发育垂向分带不明显,溶蚀孔洞孤立且连通性差.发育有不整合油藏以及构造块状油藏两种油气藏类型. |
| 英文摘要: |
| Nanpu sag in Bohaiwan basin is a Tertiary semi-graben fault sag,and is also one of the sub-tectonic units of Huanghua depression.The Paleozoic hydrocarbon pool forming was studied.It suggests that the source rock in peripheral of Nanpu sag isn't the carbonate but the Lower Tertiary strata from which oil is migrated long distance along fault and unconformity and accumulates at high position of structures forming as the newly born paleo-reservoir.It is characterized by the lower matrix porosity for carbonate with the primary pore incapable of reservoir.The late-formed unfilled tectonic fracture is the dominant reservoir space for oil migration and accumulation.The paleo-karst is not developed in vertical zoning and corroded cavity is isolated with poor connectivity.In this zone,the reservoir types mainly consist of unconformity reservoir and structural reservoir. |
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