摘要
在晋城矿区通过对采用注入/压降试井法获得的近40组煤储层参数进行渗透性与地质因素的相关性分析,进而探讨各相关因素对储层渗透率的影响规律,以此预测煤储层渗透率分布。结果表明,影响煤储层渗透率的关键因素是割理和宏观裂隙,现代地应力通过对割理和裂隙系统张开度的控制,间接地影响储层渗透率;储层压力、现代地应力和有效地应力是次要因素,渗透率与煤层厚度无关。晋城矿区中区3#煤层渗透率呈现出"南高北低、东高西低"以及"翼部高、轴部低"的特点,町店-大宁-潘庄围限的三角地带是煤储层渗透率较高的地区。
To use near 40 groups of coal reservoir parameters carried out analysis on correlation between permeability and geological factors in the Jincheng mining area through injection/falloff well test. Then probe into impacting pattern of relevant factors on reservoir permeability and predict coal reservoir permeability distribution on this account. The result has shown that the key factors impacting coal reservoir permeability have cleats and macrofractures, while contemporary crustal stress has through control the opening of them and impacting reservoir permeability indirectly. Reservoir pressure, contemporary crustal stress and effective crustal stress are secondary causes, while coal thickness has nothing to do with permeability. The permeability of coal No.3 in the central Jincheng mining area has presents features of ＂high in south low in north, high in east low in west＂ and ＂high in limbs low in axis＂. The Dingdian-Daning- Panzhuang confining triangle is high coal reservoir permeability area.
出处
《中国煤炭地质》
2016年第6期35-41,共7页
Coal Geology of China
基金
国家科技重大专项课题(2016ZX05045-001)
陕西省工业科技攻关项目(2015GY112)资助
关键词
预测模型
渗透率
煤储层
晋城矿区
prediction model
permeability
coal reservoir
Jincheng mining area
