岩性油气藏 ›› 2017, Vol. 29 ›› Issue (5): 140–147.doi: 10.3969/j.issn.1673-8926.2017.05.017

• 油气田开发 • 上一篇    下一篇

黔北小林华矿区高阶煤层气藏特征及开采技术

高为1,2, 金军1, 易同生1, 赵凌云1,2, 张曼婷1, 郑德志3   

  1. 1. 贵州省煤层气页岩气工程技术研究中心, 贵阳 550081;
    2. 贵州省煤田地质局159队, 贵州 六盘水 561600;
    3. 煤炭科学研究总院, 北京 100013
  • 收稿日期:2017-02-23 修回日期:2017-04-30 出版日期:2017-09-21 发布日期:2017-09-21
  • 第一作者:高为(1987-),男,硕士,工程师,主要从事煤层气及页岩气开发地质方面的研究工作。地址:(550081)贵州省贵阳市观山湖区阳关大道112号煤田科技中心。Email:404929883@qq.com。
  • 通信作者: 金军(1983-),男,硕士,高级工程师,主要从事煤层气地质方面的研究工作。Email:99761164@qq.com。
  • 基金资助:
    贵州省地质勘查基金项目“黔北综合试验区金沙地区煤系地层‘三气'综合评价及共探共采选区研究”（编号：2016-03）与中国地质调查局项目“黔北二叠系煤系地层‘三气’资源勘查评价试验”（编号：12120114020201-05）联合资助

Enrichment mechanism and mining technology of high rank coalbed methane in Xiaolinhua coal mine, northern Guizhou

GAOWei1,2, JIN Jun1, YI Tongsheng1, ZHAO Lingyun1,2, ZHANG Manting1, ZHENG Dezhi3   

  1. 1. Guizhou Engineering Technology Research Center for Coalbed Methane and Shale Gas, Guiyang 550081, China;
    2. NO.159 Team of Guizhou Coal Geological Bureau, Liupanshui 561600, Guizhou, China;
    3. China Coal Research Institute, Beijing 100013, China
  • Received:2017-02-23 Revised:2017-04-30 Online:2017-09-21 Published:2017-09-21

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摘要： 为了揭示黔北小林华矿区煤层气成藏特征，从构造、水文地质、含煤性、储集性、封盖条件等方面，分析了该矿区煤层气赋存的基本地质条件，并研究了主力煤层的储层特征。结果表明：煤层气资源主要赋存于上二叠统龙潭组上、下2个煤组的5层主要煤层中，煤层单层厚度较薄，累计厚度较大，煤阶为3号无烟煤，煤岩原生结构较完整；煤储层埋深适中、含气量高、吸附性强，储层压力梯度平均为0.87MPa/100m，孔隙连通性较好，孔隙度平均为2.95%，渗透率平均为0.03mD，并提出了目标煤层、钻井工艺、压裂改造、合层排采等方面的建议。该矿区高阶煤层气保存条件优越，且下煤组煤层总体优于上煤组煤层，适宜进行煤层气地面开发。

关键词: 生屑滩相储层, "平剖融合"微相分析, 相控反演, 相控孔隙度预测

Abstract: To reveal the coalbed methane reservoir characteristics of Xiaolinhua coal mine in northern Guizhou, the basic geological conditions of structure,hydrogeology,coal-bearing property,reservoir and sealed condition were analyzed. The results show that the coalbed methane resources mainly occurred in the upper and lower coal measures,containing five layers coal,of which the cumulative thickness is large,the coal rank is No. 3 anthracite coal,and the original structure of coalbed is more complete. The coal reservoir is characterized by suitable burial depth,high gas content,strong adsorption and good pore connectivity,and the average coal reservoir pressure gradient is 0.87 MPa/100 m,average porosity is 2.95%,average permeability is 0.03 mD. The valuable suggestions are proposed for coalbed methane mining in target coal seam optimization,drilling technology, fracture technology and combined seam gas drainage technology. It is beneficial for coalbed methane ground development that the preservation conditions of high rank coalbed methane are advantage and the lower coal measures are better than the upper coal measures.

Key words: bioclastic shoal reservoir, microfacies analysis, facies-controlled inversion, facies-controlled porosity prediction

中图分类号: 

  • P618.11
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