煤层气井受钻井压裂影响因素研究
Research on Influencing Factors of Coalbed Methane Wells by Drilling and Fracturing Operations
赵泽 1熊辉 1徐勇 1张浩亮 1王雷雷 1孔鹏1
作者信息
- 1. 中联煤层气(山西)有限责任公司,山西 030000;三气共采省技术创新中心,山西 030000
- 折叠
摘要
煤层气是在煤热演化的过程中形成并赋存在煤层中的一种优质新型清洁能源,在我国煤层气资源极其丰富,开采前景十分广阔.煤层气的开采不仅能降低矿井的灾害程度,还能减少温室气体的排放,助力实现"碳达峰,碳中和"目标.煤层气的完井方式通常采用压裂完井,随着煤层气生产区块进入大规模开发阶段,部分井受到邻井钻井压裂影响,导致气量下降.本文通过对区块受钻井压裂影响井的数据进行分析处理,收集井间距、受钻井压裂影响前正常气量等数据,并进行分析对比,发现新井150m范围内更容易受到钻井影响,新井150m～300m范围更易受到钻井压裂的影响.并为后期新投井的钻井压裂提供指导.
Abstract
Coalbed methane is a high-quality new clean energy formed in the process of coal thermal evo-lution and deposited in coal seams.China possesses extremely rich coalbed methane resources with vast extraction potential.Extracting coalbed methane can not only reduce mine disasters,but also reduce greenhouse gas emissions,helping to achieve the goal of"carbon peak,carbon neutrality".Coalbed methane wells are usually completed using fracturing techniques.As coalbed methane production blocks enter the large-scale development stage,some wells are affected by the drilling and fracturing of adjacent wells,resulting in a decrease in gas production.This study analyzes and processes the data from wells af-fected by drilling and fracturing,and collects data such as well spacing and normal gas production volume before drilling and fracturing impacts for analysis and comparison.It is found that the new wells are more likely to be affected by drilling within 150m,and are more susceptible to fracturing impacts within 150～300m,which could guide the drilling and fracturing operation in newly planned wells.
关键词
煤层气/钻井影响/压裂影响Key words
Coalbed Methane/drilling impact/fracturing impact引用本文复制引用
出版年
2024
NETL
NSTL
万方数据