三塘湖盆地煤层气资源勘探前景分析

Prospect of Coalbed Methane Exploration in Santanghu Basin

我国低煤阶含煤盆地煤层气地质勘探和研究的程度较低,勘探开发试验一直没有取得实质性突破。分析了三塘湖低煤阶盆地的煤层发育、煤层含气性与吸附性等特征,探讨了水文地质条件对煤层气富集的影响,结合初步试采成果,认为该盆地具有一定的煤层气勘探潜力,条湖—马朗凹陷是盆地内煤层气勘探的首选区块。

The Santanghu basin is one of low-rank coal-bearing basins which have become the hotspot of coal bed methane exploration areas. Based on the analyses and discussions of geologic characteristics of this are a, such as developmental characteristics of coal, coal evolution characteristics, coal bed methane content, micropetrological unit, the adsorption isotherm characteristics of coal, Hydrogeological conditions of effect and so on, we consider that the basin has abundant coal bed methane exploration foundation and the northern margin of Tiaohu-Malangng sag in Shuixigou Group is the preferred field for coal bed methane exploration.