Affiliation of Author(s):资源与地球科学学院
Teaching and Research Group:地质系
Journal:中国矿业大学学报
Place of Publication:徐州
Key Words:煤层气井;井底流压波动;形成机理;排采控制;大河边区块
Abstract:针对黔西六盘水煤田大河边区块煤层气井排采过程中井底流压频繁波动的工程问题,综合煤储层参数测试、三维地震勘探、水力压裂微震监测、智能化排采实时监控等数据,研究了井底流压波动类型及特征,探讨了井底流压波动的形成机理及井间差异演化的地质与工程协同控制作用,提出了抑制井底流压波动的排采管控措施,对复杂构造区煤层气井排采工作具有指导性意义.研究表明:煤层气井井底流压波动可划分为高幅低频、中幅中频、低幅高频、中幅高频4种类型;套压显现前,井底流压无波动,随着产气量快速提升及产水量快速下降,井底流压波动幅度、频率均呈现增大趋势.煤储层中气水两相流态不稳定,低导流能力裂缝“水锁”导致解吸气 积聚,“气涌”后套压快速升高是引起井底流压周期性波动的原因,深埋藏、高地应力、低渗透率、难改造煤层气藏开发过程中更容易产生严重的井底流压波动.低产水井排采前期应合理控制井底流压日降幅,在产气量快速提升前排出更多的压裂液;产气量提升过程中,可通过改变排采强度、提高套压等方式抑制井底流压大幅波动;应确保煤层气井排采过程的连续性,尽可能避免快速提产及稳产阶段长时间停抽.
First Author:周效志
Co-author:赵福平
Indexed by:Journal paper
Correspondence Author:朱世良*
Discipline:Engineering
First-Level Discipline:Geological Resources and Engineering
Document Type:J
Volume:54
Issue:1
Page Number:83-97
Translation or Not:no
Date of Publication:2025-01-15
Included Journals:EI
Attachments:
Pre One : Fault structure control of gas-water production differences from coalbed methane cluster wells in complex tectonic zones: a case study of the Dahebian block in Liupanshui coalfield, Western Guizhou, China
Next One : Effects of microstructure on hydraulic fracturing and gas–water production in coal reservoirs: A case study of the Dahebian coalbed methane block in Western Guizhou, China
Associate professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
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School/Department:School of Resources and Geosciences
Administrative Position:Deputy Director of the Department
Education Level:With Certificate of Graduation for Doctorate Study
Business Address:CBM Development Laboratory in Wenchang Campus of China University of Mining and Technology
Gender:Male
Contact Information:cumtzxz@cumt.edu.cn
Degree:Doctor
Status:在岗
Academic Titles:Deputy director of Jiangsu low carbon society
Other Post:Member of Chinese Geological Society
Alma Mater:China University of Mining and Technology
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Honors and Titles:
2024-2025学年度中国矿业大学优秀学术学位硕士学位论文指导教师 2025-07-11
2024中国知网高被引学者TOP5% 2025-01-03
2023-2024学年度中国矿业大学优秀专业学位硕士学位论文指导教师 2024-07-11
中国自动化学会技术发明二等奖 2023-11-01
第十三届中国石油工程设计大赛方案设计类（采油气工程单项组）全国三等奖指导教师 2023-05-11
领跑者5000中国精品科技期刊顶尖学术论文 2022-12-29
2021年度中国地质学会地质类工程专业优秀本科毕业设计指导教师 2022-08-25
贵州省科技进步二等奖 2020-07-01
煤炭工业协会科技进步二等奖 2013-03-06
贵州省科技进步三等奖 2007-11-07
