发明名称 |
STAGE TOOL WITH LOWER TUBING ISOLATION |
摘要 |
A stage tool includes an isolation mechanism for isolating the lower bore of a completion string. The isolation mechanism is initially in a deactivated configuration until sufficient hydraulic pressure is applied, at which time, the isolating mechanism is activated to isolate the lower bore from cement ingress. Concurrently or subsequently, a stage tool may be opened to facilitate cementing of an annulus between the completion string and the wellbore. After cementing, the isolation mechanism, or portions thereof, may be drilled out to re-establish flow through the stage tool. |
申请公布号 |
CA2892736(C) |
申请公布日期 |
2017.03.14 |
申请号 |
CA20152892736 |
申请日期 |
2015.05.26 |
申请人 |
WEATHERFORD/LAMB, INC.;WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
MCNABB, BRYCE;MARCIN, JOZEPH ROBERT;HANSON, ANDREW J.;MACTAVISH, JAMES;KSHYK, COREY |
分类号 |
E21B33/13;E21B33/14;E21B34/14 |
主分类号 |
E21B33/13 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|