Invention Grant
- Patent Title: Hydrostatic pressure independent actuators and methods
- Patent Title (中): 静压独立执行器和方法
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Application No.: US13668688Application Date: 2012-11-05
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Publication No.: US09074438B2Publication Date: 2015-07-07
- Inventor: Richard T. Caminari
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent David J. Groesbeck; Brandon S. Clark
- Main IPC: E21B23/04
- IPC: E21B23/04 ; E21B23/00 ; F17D1/16 ; E21B34/10
Abstract:
An actuator that may be used in a wellbore to change the state of a downhole tool. The actuator has an operator that is axially movable in response to changes in tubing pressure. The actuator includes a hydraulic circuit that creates a temporary reference pressure against which the tubing pressure indexes the operator.
Public/Granted literature
- US20130118758A1 HYDROSTATIC PRESSURE INDEPENDENT ACTUATORS AND METHODS Public/Granted day:2013-05-16
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