煤层气井排采历史地质分析

煤层气井排采历史地质分析

何伟钢1, 叶建平2

1. 中国矿业大学北京校区，北京 100083; 2. 中联煤层气有限责任公司，北京 100011

收稿日期:2003-09-20 修回日期:2003-09-20 出版日期:2003-09-20 发布日期:2003-09-20

Geological Alalysis of Production History in Coalbed Methane Wells

HE Wei-gang1, YE Jian-ping2

1. Beijing Campus, China University of Mine Technology, Beijing 100083, China; 2. China United Coalbed Methane Corporation Ltd., Beijing 100011, China

Received:2003-09-20 Revised:2003-09-20 Online:2003-09-20 Published:2003-09-20

摘要/Abstract

摘要： 根据晋城、潞安、焦作、铁法4个矿区25口煤层气生产试验井的排采资料，从煤储层渗透性和含气饱和度、生产压降条件、地下水系统、储层能量系统等方面综合分析研究，将排采曲线归纳为4种具有代表性的类型。认为煤储层渗透率0．5mD以上、临储压力比0．6以上以及含气饱和度80％以上，是获得高产煤层气井的必要储层条件。同时，煤储层和围岩的不同组合。将直接影响煤层气井的生产状况。

Abstract: Production data of 25 coalbed methanne wells of Jincheng，Lu’an，Jiaozuo and Tiefa coalfields are used in a comprehensive study on permeability，gas saturation，condition of reservoir pressure drop-off，underground water system an d energy system of coalbed methane reservoir．Four types of typical production curve in combed methane wells are recognized．The author believe that necessary reservoir conductions of high production coalbed methane well are high permeability (>0.5 mD)，high specific value of critical desorption pressure and reservoir pressure(> 0.6)and high gas saturation(>8O％)．Variable combination between coal seam and stratum may control directly coalbed methane production．

何伟钢, 叶建平. 煤层气井排采历史地质分析[J]. J4.

HE Wei-gang1, YE Jian-ping2. Geological Alalysis of Production History in Coalbed Methane Wells[J]. J4.