发明名称 |
DRILLING SYSTEM WITH FLOW CONTROL VALVE |
摘要 |
A technique facilitates drilling of wellbores with a steerable system having a plurality of pads which may be selectively actuated in a lateral direction to apply a side force. Application of the side force is used to steer a drill bit. A valve system is positioned to control delivery of actuating fluid under pressure to individual pads in a manner that enables steering of the drill bit. The valve system allows drilling along a desired curve by controlling the flow of actuating fluid under pressure to specific steering pads at specific angular positions. The valve system also allows drilling along a desired trajectory by preventing exposure of the pads to the pressurized actuating fluid. |
申请公布号 |
EP2872727(A1) |
申请公布日期 |
2015.05.20 |
申请号 |
EP20130816546 |
申请日期 |
2013.07.03 |
申请人 |
SERVICES PÉTROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
NIINA, NOBUYOSHI;POLYNTSEV, OLEG |
分类号 |
E21B21/10;E21B10/60;F16K11/074 |
主分类号 |
E21B21/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|