煤田地质与勘探Issue(2)：28-32,5.DOI:10.3969/j.issn.1001-1986.2015.02.006
鄂尔多斯盆地东缘煤层气有利区块优选
Selection of the favorable coalbed methane(CBM) blocks in eastern Ordos basin
摘要
Abstract
After 20 year exploration and development, the CBM industrialization hasn’t been realized in eastern Ordos basin. With the enrichment of CBM exploration data, it is necessary to select favorable blocks. In this paper, firstly, in combination with previous research, the area shallower than 1500m in eastern Ordos basin may be divided into six blocks, and 9 parameters were chosen as selecting index, such as coal seam thickness, gas content, tectonic condition, hydrologic condition, coal structure, gas saturation, reservoir pressure gradient, permeability and the ratio of critical reservoir pres-sure to the reservoir pressure; secondly, the corresponding critical evaluation value was determined. The above 9 pa-rameters are set as the evaluation index aggregate, evaluation unit as the object aggregate, favorable, sub-favorable and unfavorable as rating level aggregate. Then by using the fuzzy mathematics comprehensive evaluation method, the membership degree to the evaluation grades of the evaluation parameters for each evaluation unit was obtained, and by using hierarchy analytic process, the relative weight of every index was obtained. Finally, the membership degrees to the evaluation rating was obtained. According to the maximum membership degree principle, Wubao-Liulin was sorted as favorable area, Daning-Jixian and Hancheng as sub-favorable areas, and Zhungeer, Fugu, Hequ-LinXian as unfavorable areas, the CBM recovery in Wubao-Liulin is higher than that in Daning-Jixian and Hancheng, and Wubao-Liulin, Dan-ing-Jixian and Hancheng were proposed as CBM priority development blocks in eastern Ordos basin.关键词
煤层气/鄂尔多斯盆地东缘/有利区块优选/模糊数学综合评判/层次分析法Key words
coalbed methane/eastern Ordos basin/selection of favorable blocks/fuzzy mathematics comprehensive evaluation/hierarchy analytic process分类
天文与地球科学引用本文复制引用
李贵红..鄂尔多斯盆地东缘煤层气有利区块优选[J].煤田地质与勘探,2015,(2):28-32,5.基金项目
国家科技重大专项课题(2011ZX05040-003) （2011ZX05040-003）
