樊庄地区山西组煤层控气综合因素分析

Comprehensive Analysis of CBM Controlling Factors of Shanxi Formation at Fanzhuang Area

煤层气藏最典型的特征是煤层自生自储,因此煤储层的特征是煤层气成藏的核心要素。为了研究樊庄地区山西组3#煤储层的富集成藏特征,现在主要从樊庄地区3#煤源岩条件、物性特征、保存条件、构造控藏模式这几个方面分析该地区煤层气富集的原因。综合结论认为该地区突出的优势是煤层厚度大,稳定,物性好,含气量大,加之较好的保存条件和构造控藏模式,因此在该地区形成煤层气富集。这项研究对该地区煤层气后续勘探和开发都具有重要的意义。

The most typical property of coalbed gas reservoir is that the gases are authigenic and stored in the coal. Therefore the features of coal reservoir are the core elements of the CBM reservoir. In order to study enrichmen characteristics of 3# coal in Fanzhuang area, several aspects such as source rock conditions, physical characteristics, storage conditions and reservoir tectonic controlling model are analyzed. The research shows that the region has outstanding advantages at large thickness of coal bed, stable stretching, good physical property and large air content. With good preservation conditions and reservoir tectonic controlling model, thus CBM has enriched in the area. This study has important theoretical and practical significance to subsequent exploration and development of coalbed methane in this area.