房孝杰, 吴财芳, 刘小磊,等.滇东黔西老厂矿区雨汪区块煤层气井产能特征及其影响因素[J].河南理工大学学报（自然科学版）,2020,39(3):11-16.

FANG X J, WU C F, LIU X L,et al.Productivity characteristics and influencing factors of coalbed methane wells in Yuw-ang block of Laochang mining area in eastern Yunnan and western Guizhou provinces[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(3):11-16.

滇东黔西老厂矿区雨汪区块煤层气井产能特征及其影响因素

房孝杰1,2, 吴财芳1,2, 刘小磊1,2, 张莎莎1,2, 刘宁宁1,2

1.中国矿业大学资源与地球科学学院，江苏 徐州 221116;2.煤层气资源与成藏过程教育部重点实验室，江苏 徐州 221116

摘要:为研究多煤层发育区影响煤层气井产能的主要因素，以滇东黔西老厂矿区雨汪区块为研究对象，基于区内煤层气地质及气井排采资料，分析区内煤层气井产气、产水特征，探讨影响煤层气井产能的关键因素。研究结果表明，雨汪区块中-低产煤层气井数量占总井数的73% ，影响气井产能的主要包括地质和排采因素，其中，地质因素主要为地应力和渗透率，排采因素主要为产水速率和停井次数。建议本区煤层气勘探开发应首选中-低地应力、渗透率较高的部位或层段，气井排采初期产水量需控制在1.5 ~3 m³/d，见气后产水量控制在1 ~1.8 m³/d，排采期间尽量减少停井次数。

关键词:滇东黔西;老厂矿区;雨汪区块;煤层气井;产能特征;地质因素;排采因素

doi:10.16186/j.cnki.1673-9787.2020.3.2

基金项目:国家自然科学基金资助项目（41572140）；国家科技重大专项项目（2016ZX05044001）

收稿日期:2019/07/24

修回日期:2019/09/26

出版日期:2020/05/15

Productivity characteristics and influencing factors of coalbed methane wells in Yuw-ang block of Laochang mining area in eastern Yunnan and western Guizhou provinces

FANG Xiaojie1,2, WU Caifang1,2, LIU Xiaolei1,2, ZHANG Shasha1,2, LIU Ningning1,2

1.School of Resource and Earth Science， China University of Mining and Technology， Xuzhou  221116 ， Jiangsu， China;2.Key Laboratory of Coalbed Methane Resource and Reservoir Formation Process， Ministry of Education ，Xuzhou  221116 ， Jiangsu， China

Abstract:In order to study the main factors that influence the productivity of coalbed methane wells in multiseam development area， taking Yuwang block of Laochang mining area in eastern Yunnan and western Guizhou provinces as the research area， the characteristics of gas and water production of coalbed methane wells were studied based on the geological data in the area， and the key factors affecting the productivity of CBM wells were revealed， then the preliminary suggestion of CBM drainage systems were put forward. The results showed that the number of low -yielding CBM wells in Yuwang block accounted for 73% of the total CBM wells. The main factors affecting gas well productivity included geological factors and drainage factors. Geological factors included in-situ stress and permeability， and drainage factors included water production rate and well shutdown times. The research suggested that coalbed methane exploration and development should be carried out inlocations or sections with medium-low in-situ stress and high permeability in this area. In the initial stage of CBM well drainage， the daily water amount should be controlled within 1.5~3 m³/d. After gas production started， the daily water amount should be controlled within 1~1.8 m³/d， and the number of shutdowns should be reduced throughout the drainage process

Key words:eastern Yunnan and western Guizhou provinces;Laochang mining area;Yuwang block;coalbed methane well;productivity charalteristic;geological factor;drainage factor

滇东黔西老厂矿区雨汪区块煤层气井产能特征及其影响因素_房孝杰.pdf