页岩气开发目标区优选体系与评价方法

An optimal system and evaluation methods of ranking shale gas development prospective zones

中国对页岩气的研究已经起步,但至今尚未建立完善的页岩气目标区优选体系,这制约了我国页岩气大规模工业化开发的步伐。在收集大量的页岩气基础资料和借鉴前人的研究成果的基础上,详细分析了页岩储层地质因素对页岩气富集丰度和开发效果的影响,建立了相应的页岩气目标区评价指标体系。通过层次分析法确定权重,利用无量纲化指标处理方法对所确定的指标进行标准化处理,采用加权平均模型对目标区进行模糊综合评价。最后以中国部分页岩气试验区为例进行了综合评价、排序。其成果实际应用效果良好,能够有效地指导我国页岩气的勘探开发工作。

The research of shale gas just started up so there is lack of a complete optimal system of ranking shale gas development zones,which significantly constraints the commercial shale gas production in China.In view of this,based on a great number of fundamental data and previous research results,a deep investigation was made into the impact of geological factors on the shale gas reserves abundance and the development response,thus a related evaluation index system of shale gas target zones was set up.The weights were determined by the way of analytic hierarchy process,then the determined indexes were standardized by use of the dealing methods of index without dimension,and finally a fuzzy synthetic evaluation was done on the target zones through weighted mean models.The proposed ranking system and evaluation methods have been tried on some shale gas pilot test areas,the satisfactory results of which will provide useful experience for shale gas exploration and development in China.