135531 ⎘
Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for equalizing fluid pressure above and below the valve
WELL TOOL ACTUATION UPON PRESSURE DECREASE
#2INFLATABLE PRODUCTION PACKER WITH PRESSURE RELIEF VALVE ASSEMBLY
#3Modified whipstock design integrating smart cleanout mechanisms
#4Hydrostatically insensitive plug assembly
#5Hydrostatically insensitive testing and injection plug
#6DOWNHOLE VAPOR-TRANSITION CONTROL VALVE FOR FLUID INJECTION
#7Treatment system, method, and borehole system
#8Selectively bypassing float collar
#9Downhole vapor-transition control valve for fluid injection
#10Textured resilient seal for a subsurface safety valve
#11Selectively bypassing float collar
#12Wellbore sleeve injector and method
#13Pressure regulating check valve
#14Pressure actuated downhole device
#15Equalizing cartridge for a flapper valve
#16Completion plug for well completion
#17Multi-ball valve assembly
#18High pressure gas lift valve with dual edge welded bellows
#19Downhole check valve assembly with a frustoconical mandrel
#20Downhole Check Valve Assembly with a Swellable Element Mechanism
#21Tubing or annulus pressure operated borehole barrier valve
#22Sand fall-back prevention tools
#23Valve apparatus
#24Equalizing device for safety valves
#25Equalizing device
#26Annular barrier with valve unit
#27Valve apparatus
#28Expandable metal packer system and methodology with annulus pressure compensation
#29Wellbore sleeve injector and method
#30Control line pressure controlled safety valve equalization
#31Fluid Distribution System for a Wellsite
#32Annular barrier system
#33Fluid injection valve
#34Linear actuator with hydraulic feed through
#35OFFSHORE METHOD
#36Downhole system with sliding sleeve
#37Mitigating Swab and Surge Piston Effects in Wellbores
#38Tubing or annulus pressure operated borehole barrier valve
#39Pressure regulating check valve
#40Downhole valve
#41Auto-shut-in chemical injection valve
#42Dirty fluid pressure regulator and control valve
#43Pressure activated cyclical valve apparatus and method
#44Standing injection valve with hydraulically dampened valve closure
#45Steam operated injection and production device
#46Flow control valve
#47Flapper and seat with a hard and soft seal for a subsurface safety valve
#48Valve apparatus
#49Balance line control system with reset feature for floating piston
#50Annular barrier and downhole system for low pressure zone
#51Ball valve and remotely releasable connector for drill string
#52Equalizer valve with opposed seals biased toward closed from rising pressure on either of opposed sides
#53Retrievable plugging tool for tubing
#54Pressure equalizing valve insensitive to setting depth and tubing pressure differentials
#55Flow control valve with balanced plunger
#56Flow system
#57Zone isolation method and annular barrier with an anti-collapsing unit
#58Standing injection valve with hydraulically dampened valve closure
#59Downhole isolation valve
#60Chemical injection valve system
#61Method and apparatus for actuating a downhole tool
#62Pressure release assembly for casing of drilling rig
#63Pressure differential device with constant pressure drop
#64Failsafe control system for a safety valve having a condition sensing and chemical injection feature
#65Pressure equalization for dual seat ball valve
#66Wellbore annular safety valve and method
#67Multiple piston pressure intensifier for a safety valve
#68PRESSURE REGULATED DOWNHOLE EQUIPMENT
#69Mitigating swab and surge piston effects in wellbores
#70Downhole tool anchoring system
#71Wellbore isolation devices and methods of use to prevent pump offs
#72Dirty fluid pressure regulator and control valve
#73Modular directional control valve
#74Safety valve with lockout capability and methods of use
#75Differential pressure indicator for downhole isolation valve
#76PRESSURE PULSE GENERATING TOOL
#77Pressure equalizing valve
#78Apparatus and method for stimulating subterranean formations
#79Junk basket with self clean assembly and methods of using same
#80Bi-directional pressure equalization valve
#81Flapper equalizer with integral spring
#82Flow control system with variable staged adjustable triggering device
#83Failsafe hydrostatic vent
#84High-pressure cap equalization valve
#85INTERNAL TUBING CUTTER
#86Dual closure system for well system
#87Fluid injection device
#88Tubing pressure insensitive pressure compensated actuator for a downhole tool and method
#89Valve for a downhole tool
#90Annular pressure regulating diaphragm and methods of using same
#91COLLAPSE SENSING CHECK VALVE
#92Multi-barrier system and method
#93Subsurface safety valve flapper
#94Apparatus and method for stimulating subterranean formations
#95Downhole flow device with erosion resistant and pressure assisted metal seal
#96Hydraulically controlled barrier valve equalizing system
#97Flow control device
#98Subsurface Safety Valve Flapper
#99Pressure equalizing a ball valve through an upper seal bypass
#100Multi-stage pressure equalization valve assembly for subterranean valves
#101Well tool with combined actuation of multiple valves
#102Pressure equalization device for downhole tools
#103Subsurface Safety Valve Flapper
#104Permanent downhole deployment of optical sensors
#105Multiple Spring Subsurface Safety Valve
#106Pressure balanced piston for subsurface safety valves
#107Flapper mounted equalizer valve for subsurface safety valves
#108Method and apparatus to hydraulically bypass a well tool
#109Method and apparatus to hydraulically bypass a well tool
#110Flapper latch
#111Control line hydrostatic minimally sensitive control system
#112Dual flapper barrier valve
#113Permanent downhole deployment of optical sensors
#114Instrumentation for a downhole deployment valve
#115Valve apparatus with seal assembly
#116Deep set safety valve
#117Annular choke
#118Tubing fill and testing valve
#119Expandable tubulars for use in a wellbore
#120Snorkel device for flow control
#121Equalizing flapper for high slam rate applications
#122Aquifer recharge valve and method
#123Non-elastomer cement through tubing retrievable safety valve
#124Valve apparatus with seal assembly
#125Valve within a control line
#126Deep set safety valve
#127Method and apparatus for selective injection or flow control with through-tubing operation capacity
#128Method and apparatus to isolate a wellbore during pump workover
#129Deep set safety valve
#130Cement-through, tubing retrievable safety valve
#131Release tool for coiled tubing
#132Deep set wireline retrievable safety valve
#133Constantly adaptive void elimination system
#134Flow control system for a tubular