利用钻孔煤心及地质构造规律查明煤体结构纵横向展布

Vertical and Lateral Distribution of Coal Mass Texture by Coal Core and Geological Structure Rule

利用钻孔煤心观察,描述煤体形状、粒径及破碎程度,结合测井响应特征,进行综合定性分类,查明单井煤体结构纵向分布。利用地质构造规律预测煤体结构平面展布。以某气田为例,阐述了煤体结构识别方法及其分布规律,煤体结构在垂向上具有分异性,平面上具有分带性,为煤层气井选区和射孔、压裂工作的开展提供依据。

Vertical of coal mass texture is comprehensively classified, using drilling coal core observation containing shape, size and broken degree of coal mass, and well log. Geological structure rule forecast lateral distribution of coal mass texture. Expounds recognition method and distribution rule of coal mass texture,which is differentiation in vertical direction and zonality in lateral direction in a gas field. The above researches provide the basis for CBM selection region,perforating and fracturing work.