发明名称 |
DRILL STEM COMPONENT COMPRISING A MOVABLE COUPLER AND A PRESSURE CHAMBER |
摘要 |
A rotary drill stem for a well including a central tubular element, and first and second connectors each including a threaded portion that can connect the element to another element. At least one of the connectors includes a chamber in communication with a pressure outside the chamber. The connector includes an annular signal transmission coupler. The annular coupler includes a ring having an annular coupling surface. The coupler includes an insulating support that leaves the annular coupling surface free. The coupler includes a piston surface axially opposite to the annular coupling surface. The annular coupler forms a piston. |
申请公布号 |
EP2681403(A1) |
申请公布日期 |
2014.01.08 |
申请号 |
EP20120706592 |
申请日期 |
2012.02.29 |
申请人 |
VAM DRILLING FRANCE |
发明人 |
MITJANS, BERANGER;BUCHOUD, VINCENT;MESNIL, PIERRE |
分类号 |
E21B17/02 |
主分类号 |
E21B17/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|