| 沉积盆地中地质流体运动与油气成藏 |
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| 引用本文： | 曾溅辉.沉积盆地中地质流体运动与油气成藏[J].海相油气地质,2005,10(1):37-42. |
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| 作者姓名： | 曾溅辉 |
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| 作者单位： | 石油大学(北京)盆地与油藏研究中心 |
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| 摘 要： | 沉积盆地内地质流体运动的驱动力主要有压实作用、地下水重力作用、构造作用和进入盆地中的热流。在不同的驱动力作用下,地质流体可有离心流、向心流、穿越流以及幕式和集中式等不同的运动特征,对油气成藏的影响亦存在差异。在压实作用驱动下,油气藏围绕盆地生油中心成环状分布。在重力作用驱动下,油气主要聚集在地下水的低势区,如盆地的斜坡和中心,或地下水中下游的靠盆地一侧。构造作用驱动下的油气运移比较复杂,油气主要聚集在冲断层一侧,但也可以长距离运移到斜坡带聚集。
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| 关 键 词： | 沉积盆地 地质流体 流体运动样式 流体驱动力 油气成藏 |
Geofluids Flow and Hydrocarbon Accumulation in Sedimentary Basin |
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| Zeng Jianhui.Geofluids Flow and Hydrocarbon Accumulation in Sedimentary Basin[J].Marine Origin Petroleum Geology,2005,10(1):37-42. |
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| Authors: | Zeng Jianhui |
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| Institution: | Zeng Jianhui |
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| Abstract: | The forces inducing basin-wide geofluids flow are principally compaction, groundwater gravity-inducing, tectonic processes acting on a basin, and introduction of heat into a basin. Different forces induce different basin-wide geofluids flow patterns which include the flow directed from basin depocenters to edges, the flow towards basin center from its edges, cross-basin flow, episodic and focused flow. These different basin-wide geofluids flow patterns have different effects on hydrocarbon migration and accumulation. Under compaction, oil and gas reservoirs commonly distribute around the hydrocarbon source center of the basin. Due to gravity-induced groundwater flow, hydrocarbon mainly accumulates in low groundwater potential zones, such as the slope and the centre of the basin. Tectonically-induced hydrocarbon migration pattern is usually complicated, in which hydrocarbon commonly accumulates near trust fault gas and/or migrates for a long distance and accumulates in the slope zone. |
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| Keywords: | Sedimentary basin Geofluid Fluid flow pattern Forces inducing geofluids flow Hydrocarbon accumulation |
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