发明授权
- 专利标题： Drilling system with drill string valves
- 专利标题（中）： 带钻柱阀的钻孔系统
-
申请号： US12113539申请日： 2008-05-01
-
公开(公告)号： US08307913B2公开(公告)日： 2012-11-13
- 发明人: Lee F. Dolman , Benjamin P. Jeffryes , Ashley B. Johnson , Brian Clark , John A. McCullagh
- 申请人： Lee F. Dolman , Benjamin P. Jeffryes , Ashley B. Johnson , Brian Clark , John A. McCullagh
- 申请人地址： US TX Sugar Land
- 专利权人： Schlumberger Technology Corporation
- 当前专利权人： Schlumberger Technology Corporation
- 当前专利权人地址： US TX Sugar Land
- 代理商 Kimberly Ballew; John Vereb
- 主分类号： E21B21/08
- IPC分类号： E21B21/08 ; E21B21/10
摘要：
A method to control borehole fluid flow includes detecting a drilling condition and operating at least one valve in the drill string to place an exterior of the drill string in fluid communication with an interior of the drill string in response to detecting the drilling condition.
公开/授权文献
- US20090272580A1 DRILLING SYSTEM WITH DRILL STRING VALVES 公开/授权日：2009-11-05
信息查询
