摘要
CZ-205号煤层气井地层主要以致密性泥岩、沙质泥岩及长石为主的细粒砂岩为主,设计井深571米。由于气动冲击器存在一定的局限性,在较深或含水地层采取液动冲击器钻进,能明显提高钻进效率。
The strata of CZ -205 coal seam mainly consists of feldspathic fine - sandstone. hammer has some restriction, The designed depth for wells in compact mudstone, sand - mudstone and this coal seam is 571m. Since the air it can significantly improve the drilling efficiency by using hydraulic impactor when the drilling occurs in deep and water-bearing strata.
出处
《中国煤层气》
2013年第3期45-46,共2页
China Coalbed Methane
关键词
液动冲击器
钻头
冲洗液
转速
压力
Hydraulic impactor
bit
flushing fluid
rotating speed
pressure
