准南地区煤层气选区评价体系及有利区预测  

Evaluation System and Prediction of Coalbed Methane Exploration Targets in the Southern Junggar Basin

作　　者：杨曙光 伏海蛟 王刚 严德天[2] 李跃国 姚程鹏 张娜 Yang Shuguang;Fu Haijiao;Wang Gang;Yan Detian;Li Yueguo;Yao Chengpeng;Zhang Na(CBM Research and Development Center of Xinjiang Coal Geological Bureau,Urumqi,Xinjiang,830091,China;School of Earth Resources,China University of Geosciences,Wuhan,Hubei,430074,China)

机构地区：[1]新疆煤田地质局煤层气研究开发中心,新疆乌鲁木齐830091 [2]中国地质大学(武汉)资源学院,湖北武汉430074

出　　处：《新疆地质》2021年第2期292-296,共5页Xinjiang Geology

基　　金：新疆1∶25万北山煤窑幅区调修测项目和新疆区域地质调查片区总结与服务产品开发(DD20160345-04)共同资助。

摘　　要：新疆准南地区中-低煤阶煤层气资源十分丰富,但煤层气勘探开发进展较缓慢,建立合适的煤层气选区评价体系并对有利区进行准确预测变得尤为重要。为解决上述问题,选用“一票否决+模糊数学层次分析”的研究思路,结合该区煤层气勘探开发进展,优选不同层次的选区评价指标,如将煤层气资源条件、煤储层地质条件及煤层气保存条件选为二级评价指标;综合不同层次选区评价参数的权重与隶属度函数确定,建立准南地区勘探阶段煤层气选区评价数学模型;将不同评价单元、不同评价指标信息代入数学评价模型,确定煤层气勘探潜力等级划分,准确预测煤层气勘探有利区。结果表明,除已取得勘探突破的阜康与米泉地区外,吉木萨尔与硫磺沟可作为准南地区未来煤层气勘探开发的重点突破区块。The medium-low rank coalbed methane(CBM)resources are very rich in the southern Junggar Basin,how-ever,the progress of CBM exploration and development is relatively slow.Therefore,it is particularly important to estab-lish an appropriate evaluation system for CBM exploration and predict the favorable area accurately.In order to solve the above problems,this paper integrates the research ideas of"one-vote-down and fuzzy mathematical hierarchy analysis",combined with the progress of CBM exploration and development in the area,and selects different levels of evaluation indicators for selection of areas,such as combining CBM resource conditions,coal reservoir geological conditions,and CBM preservation conditions are selected as secondary evaluation indicators.In addition,the mathematical model of CBM selection evaluation in the exploration stage of southern Junggar Basin is established by integrating the determina-tion of the parameter weights and membership functions of different levels of selection evaluation.Finally,the different evaluation indicator information of different evaluation units is substituted into the mathematical evaluation model to de-termine the classification of CBM exploration potential,and then accurately predict the favorable area of CBM explora-tion.Researches indicate that Jimushaer and Liuhuanggou can be used as the key breakthrough blocks for the next phase of CBM exploration and development in the southern Junggar Basin,except for the Fukang and Miquan regions that have achieved exploration breakthroughs.

关 键 词：准南地区:煤层气 选区评价 模糊数学层次分析 有利目标 

分 类 号：TF526.4[冶金工程—钢铁冶金]