135536 ⎘
Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole retrievable, e.g. wire line retrievable, i.e. with an element which can be landed into a landing-nipple provided with a passage for control fluid the retrievable element being an operating or controlling means retrievable separately from the closure member, e.g. pilot valve landed into a side pocket
CONTINGENCY SEALING OPTION FOR SURFACE CONTROLLED FLOW CONTROL DEVICE
#2Deep-Set Insert Valve Using Magnetic Coupling
#3Subsurface safety valves, isolation tools, and methods of coupling
#4Systems and apparatuses for separating wellbore fluids and solids during production
#5Systems and apparatuses for separating wellbore fluids and solids during production
#6Systems and apparatuses for separating wellbore fluids and solids during production
#7Wellbore injection system
#8Chemical injection valve system
#9Valve system
#10Decoupling a remote actuator of a well tool
#11Valve actuating apparatus
#12Valve system
#13Partially retrievable safety valve
#14DOWNHOLE CATCHER FOR AN ACTUATING BALL AND METHOD
#15Barrier side pocket mandrel and gas life valve
#16Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation
#17System and method for injecting a chemical downhole of a tubing retrievable capillary bypass safety valve
#18Method and apparatus to isolate a wellbore during pump workover