厚冲积层薄基岩条件下采动井稳孔工艺与应用  

Hole Stabilization Technology and Application of Mining Wells under Thick Alluvial and Thin Bedrock Conditions

作　　者：李延河[1] 朱林 吕闰生[2,3,4] 王保玉[2,3,4] 倪小明 常会珍[5] LI Yanhe;ZHU Lin;LYU Runsheng;WANG Baoyu;NI Xiaoming;CHANG Huizhen(PingdingshanTian′an Coal Industry Co.,Ltd.,Pingdingshan 467000,China;School of Resources and Environment,Henan Polytechnic University,Jiaozuo 454000,China;Institute of Efficient Development and Utilization of Coal Gas Resources,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454000,China;Shanxi Lanyan Coalbed Methane Engineering Research Co.,Ltd.,Jincheng 048000,China)

机构地区：[1]平顶山天安煤业股份有限公司,河南平顶山467000 [2]河南理工大学资源环境学院,河南焦作454000 [3]河南理工大学煤系气资源高效开发研究院,河南焦作454000 [4]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454000 [5]山西蓝焰煤层气工程研究有限责任公司,山西晋城048000

出　　处：《煤炭技术》2024年第3期12-15,共4页Coal Technology

基　　金：国家自然科学基金项目(42072189);河南省高校科技创新团队(211RTSTHN007)。

摘　　要：以平煤股份八矿煤层气采动井01井为研究对象,借助钻井窥视仪获取了不同层位的套管变形破坏特征,分析了导致套管变形的主要影响因素。在此基础上,设计了基于“抗、让、防”稳孔工艺的井身结构和稳孔措施,并对同一井场的05井应用。结果表明,同产气周期下,基于稳孔工艺设计的采动井套管完整度高、变形小、产气量稳定。此稳孔工艺可为相似地质条件下的采动井井身结构设计提供经验参考。Taking the coalbed methane mining well 01 of the No.8 mine of Pingdingshan Co.,Ltd.as the research object,the deformation and failure characteristics of casings in different layers were obtained by means of drilling peepers,and the main influencing factors leading to casing deformation were analyzed.On this basis,the wellbore structure and hole stabilizing measures based on the"resistance,yield,and prevention"hole stabilization technology were designed and applied to well 05 at the same well site.The results show that under the same gas production period,the production well casing designed based on the stable hole technology has high integrity,small deformation and stable gas production.This hole stabilizing technology can provide experience reference for the wellbore structure design of production wells under similar geological conditions.

关 键 词：厚冲积层 薄基岩 煤层气采动井 套管变形 稳孔工艺 

分 类 号：TE242[石油与天然气工程—油气井工程]