Construction Practice of Surface L-shaped Horizontal Directional Wells in Xintian Coal Mine  

作　　者：LIHongxin ZHANGYali 

机构地区：[1] He’nan Gas Control Research Institute Co., Ltd, Zhengzhou 450043, China [2] He’nan CBM Development and Utilization Co., Ltd., Zhengzhou 450043, China

出　　处：《外文科技期刊数据库(文摘版)工程技术》2022年第4期094-099,共6页

摘　　要：In the construction of horizontal wells, different drilling assembly, drilling parameters, drilling fluid system and directional control technology are selected for different intervals, and wireless tracking monitoring while drilling is adopted to adjust the bit position at any time to control the well trajectory. According to the geological logging, engineering logging and physical logging data, the formation encountered was judged, and the purpose of safe and efficient drilling was achieved.

关 键 词：directional drilling no.9 coal seam roof argillaceous silty horizontal section drilling 

分 类 号：TB[一般工业技术]