Thickness of coal-bed, depth of imbedding, quantity of resource, gas content, permeability, stress of reservoir and wall rock conditions are defined as the seven indexes in this study.

• 选取煤层厚度、埋藏深度、资源量、含气量、渗透率、煤储层压力、围岩条件等7项指标作为盆地煤层气地质条件模糊评判的评价指标，构成模糊评价因素集。将其分为好、较好、一般、较差和差5个级别。