发明名称 |
Stabilizer for single or dual tube drilling |
摘要 |
A stabilizer for use with a string of single tube or dual concentric drill pipe above a bit having analogous tubular members adapted for fluid tight interconnection with the pipes of said string to provide a conduit for drilling fluid. A stabilizer means encircles the stabilizer body and is adapted to contact the hole wall. The stabilizer means includes a sleeve bearing mounted to rotate with respect to the stabilizer body and a stabilizer sleeve mounted stationary on the sleeve bearing. A port means in the stabilizer body provides fluid communication between the drilling fluid conduit and the stabilizer sleeve and/or thrust bearing. An exit port means in the lower end of the stabilizer means provides fluid communication between the stabilizer sleeve bearing and the outside of the stabilizer.
|
申请公布号 |
US4071101(A) |
申请公布日期 |
1978.01.31 |
申请号 |
US19760664958 |
申请日期 |
1976.03.08 |
申请人 |
WALKER-NEER MFG. CO., INC. |
发明人 |
FORD, GEORGE ALAN |
分类号 |
E21B17/10;(IPC1-7):E21B17/10 |
主分类号 |
E21B17/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|