对准噶尔盆地东部基础资料进行分析,研究了中—下侏罗统西山窑组和八道湾组煤层分布特征、煤岩煤质、储层物性及等温吸附特性、含气性,煤层气成因类型及成藏条件等,预测了准噶尔盆地东部煤层气勘探潜力.结果表明,准噶尔盆地东部侏罗系煤层分布广泛、厚度大,煤岩煤质较好(灰分、水分含量低,相对富含镜质组),煤储层物性较好、吸附性能为中等—差,煤层气资源丰富、成藏条件较好,勘探潜力巨大.根据建立煤层气资源丰度、煤层厚度、气含量、吸附饱和度、煤层原始渗透率、构造发育程度及水文地质条件参数建立选区评价标准,对工区煤层气有利区进行筛选,优选了准东乌鲁木齐—大黄山、沙帐、白家海地区为煤层气勘探的有利目标区域,合计面积达2630km2,合计资源量3000×108m3,具有较大的勘探潜力.%We analyzed the basis data of eastern Junggar Basin, probed into the distribution characteristics of coal seam, coal rank, reservoir property and isothermal adsorption property, gas-bearing property, CBM genetic type and reservoir forming conditions, and predicted the exploration potential of CBM in the area. Results showed that the Jurassic coal bed was widely and thickly distributed in eastern Junggar basin, with better coal rank ( low content of ash and moisture and ric-her vitrinite) , better reservoir property, medium-poor adsorption property, abundant CBM resources and better reservoir forming conditions, and huge exploration potential. According to CBM abundance, thickness, gas content, adsorption satu-ration, primary permeability of coal seam, structure development degree, and parameters of hydrogeologic conditions, we formulated the standard for zone selection and evaluation, selected favorable CBM zones in the work area, and determined that Urumqi-Dahuangshan, Shazhang, and Baijiahai areas in eastern Junggar Basin were favorable targets for CBM explora-tion, with total acreage being 2630 square kilometers and total resources of 320 billion cubic meters. They have greater ex-ploration potential.
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