BARRIER VALVE HYDRAULIC OPERATOR WITH COMPOUND VALVE OPENING FORCE FEATURE
摘要
A housing can be mounted adjacent an isolation valve and after a fixed number of on and off pressure cycles allow a spring to push an actuator to operate the valve to an open position. The actuator, in another embodiment, can be reset with a tool run into the module to move the actuator back against a power spring and hold that spring force until the pressure cycling begins again. The preferred application is for a formation isolation ball valve but other valves, such as sliding sleeves, or other types of downhole tools can be actuated with the module that permits a retrofit of a hydraulic operation to a heretofore purely mechanically actuated tool. The actuation force to initially open is boosted by a secondary potential energy source that is unlocked to give an initial boost force to the indexing spring that is part of a j-slot actuation mechanism.
申请公布号
WO2012047475(A3)
申请公布日期
2012.06.07
申请号
WO2011US51694
申请日期
2011.09.15
申请人
BAKER HUGHES INCORPORATED;HAYTER, STEVEN, R.;PICLLE, BRAD, R.;LAZO, ANTONIO, D.
发明人
HAYTER, STEVEN, R.;PICLLE, BRAD, R.;LAZO, ANTONIO, D.