| 川西新场气田上沙溪庙组储层渗透性的地质影响因素 |
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| 引用本文： | 吕正祥,卿淳.川西新场气田上沙溪庙组储层渗透性的地质影响因素[J].沉积与特提斯地质,2001,21(2):57-63. |
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| 作者姓名： | 吕正祥 卿淳 |
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| 作者单位： | 1. 成都理工学院
2. 西南石油局川西天然气开发公司 |
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| 摘 要： | 川西新场气田中侏罗统上沙溪庙组气藏储层渗透率具强烈的非均质性，储层孔隙结构差异是导致这种非均质性的最直接因素。孔隙结构差异的主要地质成因-是大海 岩碎屑组分和结构控制原生孔隙的发育程度；二是自生绿泥石衬垫的抗压实作用有效保护了原始孔隙喉道；三是在原生孔隙较为发育基础上的溶蚀作用有利于储层渗透性的进一步提高。此外，不同沉积环境中形成的各种层理构造同样对储层渗透性有一定影响。
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| 关 键 词： | 渗透性 四川 气田 上沙溪庙组 储层 孔隙结构 沉积环境 |
| 文章编号： | 1009-3850(2001)02-0057-07 |
| 收稿时间： | 2001/2/14 0:00:00 |
| 修稿时间： | 2001年2月14日 |
Geological factors affecting reservoir permeability of the Upper Shaximiao Formation in the Xinchang gas field, western Sichuan |
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| LU Zheng-xiang,QING Chun.Geological factors affecting reservoir permeability of the Upper Shaximiao Formation in the Xinchang gas field, western Sichuan[J].Sedimentary Geology and Tethyan Geology,2001,21(2):57-63. |
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| Authors: | LU Zheng-xiang QING Chun |
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| Institution: | LU Zheng-xiang1,QING Chun2 |
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| Abstract: | The reservoir permeability of the Upper Shaximiao Formation of Middle Jurassic in the Xinchang gas field,western Sichuan is highly heterogeneous and controlled directly by reservoir pore structures. The main geological factors giving rise to the differences of pore structures are generalized as follows. (1) The compositions and structures and textures of the sandstones determined the development of original pore spaces. (2) The anti-compression of the authigenic chlorite cement effectively protected primary intergranular pore spaces and early solution pore spaces. (3) The dissolution facilitates the enhancement of reservoir permeability. In addition, a variety of bedding structures formed in different environments has also exerted an effective influence on reservoir permeability. |
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| Keywords: | western Sichuan gas pool reservoir permeability |
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