砂岩透镜体成藏机理

陈冬霞; 庞雄奇; 邱楠生; 姜振学; 张俊

砂岩透镜体成藏机理

陈冬霞^{1, 2,},
庞雄奇^{1, 2},
邱楠生^{1, 2},
姜振学^{1, 2},
张俊²

1.
石油大学石油与天然气成藏机理教育部重点实验室, 北京 102249
2.
石油大学盆地与油藏研究中心, 北京 102249

基金项目:

国家自然科学基金项目“砂岩透镜体成藏门限及其控油气作用” 40172057

详细信息

作者简介:
陈冬霞(1974-), 女, 博士后, 主要从事油气藏形成与分布研究.E-mail: lindachen@bjpeu.edu.cn

中图分类号: P618.1
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- 被引次数: 0
出版历程
- 收稿日期: 2004-03-10
- 刊出日期: 2004-07-25

Accumulation and Filling Mechanism of Lenticular Sandbody Reservoirs

CHEN Dong-xia^{1, 2
,},
PANG Xiong-qi^{1, 2},
QIU Nan-sheng^{1, 2},
JIANG Zhen-xue^{1, 2},
ZHANG Jun²

1.
Key Laboratory for Petroleum Accumulation Mechanism, University ofPetroleum, Ministry of Education, Beijing 102249, China
2.
Basin and Reservoir Research Center, University of Petroleum, Beijing 102249, China

摘要

摘要: 砂岩透镜体油藏是隐蔽油气藏中增储上产的重要类型, 但目前对其成藏机理的认识还存在很大分歧.从油气初次运移机理入手, 结合砂泥岩压实成岩过程的分析, 对砂岩透镜体的成藏动力和成藏阻力及成藏过程进行了分析.研究认为: 烃类生成引起的膨胀力、烃浓度差引起的扩散力和砂泥岩间的毛管压力差是成藏主动力, 岩石吸附和粘滞力是成藏主要阻力; 油气水以混相涌流方式为主, 孔隙、微裂隙和微层理面是油气运移的通道; 早成岩阶段不成藏, 晚成岩早期成藏, 晚成岩晚期进入保存阶段.
- 透镜体 /
- 成藏机理 /
- 济阳坳陷 /
- 初次运移 /
- 成藏动力 /
- 成藏模式
Abstract: Lenticular sandbody reservoir is an important subtle reservoir type for increase of reserve, but its accumulation and filling mechanism is not well understood. Driven force and resistance during lenticular sandbody reservoir-filling have been analyzed based on integrated research on the process of compaction and diagenesis in interbedded sand/mud strata. The results indicate that the driven forces resulting in the filling of reservoir include pressure due to the generation of hydrocarbon, diffusion by hydrocarbon concentration difference, capillary pressure between sand and mud. Rock absorption and adhibition are taken as resistance of reservoir-filling. Hydrocarbon and water spill into the reservoirs in the mixing pattern through pore, fracture and joint fissure. Hydrocarbon is filled in early phase of late-diagenetic stage and preserved in late phase of late-diagenetic stage.
- lenticular sandbody /
- accumulation mechanism /
- Jiyang depression /
- primary migration /
- driven force of hydrocarbon accumulation /
- accumulation model

HTML全文

图 1 在邻近砂岩的页岩中孔隙中心网络里石油的可能分布(据Barker, 1978)

a.埋深3 048 m和80 ℃下, 油和水的分布; b.埋深4 267 m和115 ℃时, 由于孔隙A和B处水体的膨胀导致部分石油的排出

Fig. 1. Oil distribution in center pore network of shale (by Barker, 1978)

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图 2 毛细管压力输导油气进入砂体

Fig. 2. Hydrocarbon accumulated model in sand by transport of capillary force

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图 3 济阳坳陷砂岩透镜体油藏成藏阶段划分

Fig. 3. Accumulation stages of sand lens reservoir in Jiyang depression

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图 4 砂岩透镜体成藏模式

1.油气聚集; 2.砂岩; 3.泥岩; 4.油气的运移方向; 5.砂体中水的运移方向

Fig. 4. Accumulation model of sand lens

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图 5 牛35井砂体含油气性剖面图

Fig. 5. Oil-bearing section of Niu 35 well

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图 6 牛35井泥岩微裂缝与砂体含油气性关系

Fig. 6. Relation between mudstone microfissure and oil-bearing property in Niu 35 well

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参考文献(16)

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