石油钻采工艺2025，Vol.47Issue(1)：105-111,120,8.DOI:10.13639/j.odpt.202309030
高阶煤储层地应力特征对煤层气开发的影响
The influence of high-rank coal reservoir stress characteristics on coalbed methane development
摘要
Abstract
The distribution patterns of stress field hold significant importance in determining well deployment and the scale of fracturing treatments.To elucidate the stress distribution patterns in the Zhengzhuang block of the Qinshui Basin and reveal the influence of stress on coalbed methane development,rock mechanics parameters and stress were obtained through experimental testing and logging calculations.A three-dimensional geological-mechanical model of the coal reservoirs in the Zhengzhuang block was established using Ansys software,and numerical simulations of the stress field were conducted using finite element method to finely describe stress characteristics and further explore their impacts on coalbed methane development,providing rational suggestions for subsequent development.The research findings indicate that the stress magnitude in the Zhengzhuang block follows the pattern σH>σv>σh,indicating a strike-slip fault stress state.The maximum horizontal principal stress ranges from 15.6 MPa to 28.2 MPa,primarily oriented in the northeast-southwest direction.Stress is generally lower in areas of anticline development and higher in syncline development,while stress is typically lower in fault development areas.This research aims to provide theoretical guidance for well deployment,well trajectory optimization,and fracturing design during coalbed methane development.关键词
沁水盆地/郑庄区块/地应力场/数值模拟/煤层气/高阶煤Key words
Qinshui Basin/Zhengzhuang block/stress field/numerical simulation/coalbed methane/high-rank coal分类
天文与地球科学引用本文复制引用
杨瑞强,张聪,张武昌,马辉,桑广杰,李可心,李俊..高阶煤储层地应力特征对煤层气开发的影响[J].石油钻采工艺,2025,47(1):105-111,120,8.基金项目
中国石油华北油田公司揭榜挂帅项目"沁水中深层煤层气提高单井产气量关键技术研究及应用"(编号:2024-HB-ZD0501). （编号:2024-HB-ZD0501）
