煤田地质与勘探2019，Vol.47Issue(6)：26-31,6.DOI:10.3969/j.issn.1001-1986.2019.06.005
晋城地区煤层气井多层合采效果评价
Evaluation of coalbed methane drainage effect for multi-target seams in Jincheng region
摘要
Abstract
The study of the multi-target seams drainage effect on coalbed methane wells has great value, including coal safe mining, underground gas control, determination of development technical indicators, single well production, rational division of development layer, efficient development of coalbed methane, and development of medium and long-term coalbed methane development planning. Taking Chengzhuang mine of Jincheng as an example, the sampling data of the extraction effect in the middle and late stages of development are compared with the original gas content of the adjacent wells to evaluate the extraction effect, and the main control factors affecting the drainage effect are analyzed by combining the geological data and the on-site drainage data. According to the comprehensive analysis, it has been found that the No.15 coal seam has gas content lower than that of the No.3 and No.9 coal seams through surface coalbed methane extraction after several years. The analysis showed that the main influence factors for the rapid reduction of gas content of No. 15 coal seam in Chengzhuang mining area include the coal gas content, permeability, liquid supply capacity, reservoir pressure in coal seam and producing measures, which provide a scientific basis for the prediction of remaining reserves.关键词
煤层气/抽采效果/合层排采/煤层气含量/渗透率/成庄矿区/晋城地区Key words
coalbed methane/ drainage effect/ multi-layers drainage/ coalbed methane content/ permeability/ Chengzhuang mine/ Jincheng分类
矿业与冶金引用本文复制引用
杨建超1,李贵红1,刘钰辉1,李国富2,王朝帅2,孙天宇3..晋城地区煤层气井多层合采效果评价[J].煤田地质与勘探,2019,47(6):26-31,6.基金项目
国家科技重大专项课题(2016ZX05067-001) （2016ZX05067-001）
中煤科工集团西安研究院有限公司科技创新基金重点项目(2018XAYZD05) （2018XAYZD05）
陕西省创新能力支撑计划项目(2018TD-039) （2018TD-039）
