晋城矿区地面采动井护壁技术研究与应用
Research and Application of Wall Protection Technology for Surface Mining Well in Jincheng Mining Area
王凯1
作者信息
- 1. 山西蓝焰煤层气工程研究有限责任公司,山西 晋城 048000
- 折叠
摘要
为避免采动井套管受采场覆岩扰动影响而变形破坏,在常规采动直井"J55钢级套管+筛管"的井身结构设计基础上,提出了一种在原直井井筒内下入护壁、增透、导流工具串的工艺:在卸压弯曲下沉带区域采用N80钢级的高强度钢管,在卸压裂隙带及垮落带区域对钢管进行割缝设计,并注入高强度石英砾岩.该技术大大保障了井筒稳定性,从而提高采动井产能及运行寿命,具有一定推广意义.
Abstract
In order to reduce the vulnerability of the mining well casing to the deformation and damage caused by the overburden disturbance of the stope,based on the wellbore structure design of the conventional mining straight well"J55 steel grade casing + sieve pipe",a process of entering the retaining wall,increasing penetration and diversion tool string in the original wellbore was proposed:N80 steel grade high-strength steel pipe is used in the pressure relief bending sinking zone,the steel pipe was cut in the unloading fracture zone and collapse zone,and high-strength quartz conglomerate was injected.The technology greatly guarantees the stability of the wellbore,thereby improving the production capacity and operating life of the mining well,and has certain promotion significance.
关键词
采动井/护壁技术/石英砾岩/井筒稳定性Key words
mining well/wall protection technology/quartz conglomerate/wellbore stability引用本文复制引用
基金项目
山西省科技重大专项(20191102001)
出版年
2024
NETL
NSTL
维普
万方数据