摘要
根据禾草沟煤矿煤层开采技术条件和油气井分布特征,采用数值模拟方法,针对油气井与工作面不同位置关系的3种工况,对煤层覆岩破坏范围及其对油气井套管的影响进行了分析。结果表明,油气井位于覆岩不同层位的管段发生的变形或破坏形式不同,采动影响下油气井套管发生的水平位移分布规律为由下向上逐渐增大,套管与围岩相互挤压过程中易发生相对滑移,相对滑移量也是由下向上逐步增大。
According to coal mining conditions and oil-gas well distribution characteristics,numerical simulation method was used to analyse the scope of overburden rock damage and influences to oil-gas well casing through three different positional relations between oil-gas well and working face.The results showed that the transformation or failure mode of different intervals pipe in the overburden rock was different,the horizontal displacement of oil-gas well casing gradually increased from the bottom up,relative slip was liable to occur between casing pipe and surrounding rock and the sliding distance gradually increased from the bottom up too.
作者
陈陆根
何力
李辉
宋文健
王伯生
李雅阁
王建超
刘航
CHEN Lu-gen;HE Li;LI Hui;SONG Wen-jian;WANG Bo-sheng;LI Ya-ge;WANG Jian-chao;LIU Hang(China Local Coal Mines Co”Ltd.,Beijing 100011’China)
出处
《煤炭技术》
CAS
2019年第11期34-36,共3页
Coal Technology
关键词
采煤
沉陷
油气井
套管
变形
coal mining
subsidence
oil-gas well
casing pipe
transformation
作者简介
陈陆根(1958-),广东韶山人,高级工程师,研究方向:煤矿安全管理、煤矿瓦斯治理等,电子信箱:290256783@qq.com.
