Class / Patent application number | Description | Number of patent applications / Date published |
166330000 | Rotated operator | 20 |
20080210431 | FLAPPER LATCH - The present invention generally relates to a method and an apparatus for selectively isolating a portion of a wellbore. In one aspect, an apparatus for isolating a zone in a wellbore is provided. The apparatus includes a body having a bore. The apparatus further includes a first flapper member and a second flapper member, each flapper member selectively rotatable between an open position and a closed position. Additionally, the apparatus includes a flapper latch assembly disposed in the bore, the flapper latch assembly movable between an unlocked position and a locked position, wherein the flapper latch assembly is configured to hold the first flapper member in the closed position when the flapper latch assembly is in the locked position. In another aspect, a method for selectively isolating a zone in a wellbore is provided. In yet a further aspect, a flapper latch assembly for use with a flapper valve is provided. | 09-04-2008 |
20090065214 | Apparatus for controlling a downhole device - Apparatus for controlling a downhole device such as a choke, the apparatus comprising a housing, a mandrel connected to the downhole device and moveable within the housing to move the device between different positions, and a detent mechanism to selectively lock the mandrel in one of the positions within the housing. The first and second positions are typically defined by physical stops on the apparatus such as shoulders, or dogs and grooves etc, and are typically placed at set positions that define the different configurations of the device. Thus, the movement of the downhole device is governed by the detent mechanism, rather than by variable factors such as pressure changes. | 03-12-2009 |
20090229829 | Hydraulic Bi-Directional Rotary Isolation Valve - A valve having a sealing surface that is rotated 90 degrees on trunnions that move along a track is provided. A sleeve that moves into position to protect the valve mechanism when the valve is in an open position is provided. A second sleeve locks the sealing element of the valve in place in the closed position. The valve may be used during drilling of wells to prevent flow in casing when the drill pipe and bit are raised above the valve. | 09-17-2009 |
20110005763 | Subterranean Valve Operated by String Relative Movement - A valve is mounted to a tubular string and has an actuation assembly that is isolated from well fluids. The valve member can be a ball that rotates on a pivot and is actuated by relative rotation of string components that straddle the ball. Rotation of one string component is linked to the closure ball by an external slanted slot with an operating ball that rides in it and connects the rotating string component to the closure ball. Travel stops limit the desired rotation of the closure ball in opposed directions. The closure ball can alternatively be rotated by relative longitudinal string component movement that is converted to relative rotation such as through the use of a j-slot mechanism. Internal seals isolate the slanted slot and operating ball from well fluids. | 01-13-2011 |
20110056695 | VALVES, BOTTOM HOLE ASSEMBLIES, AND METHOD OF SELECTIVELY ACTUATING A MOTOR - Aspects of the invention provide valves, bottom hole assemblies, and methods of selectively actuating a motor. One aspect of the invention provides a valve including: a barrel having an interior having a circular cross-section, an inlet port, an outlet port, and a by-pass port; a first disc rotatably received within the barrel; and a second disc rotatably received within the barrel and pressed against the first disc to selectively form a seal. The first disc and the second each have an orifice. | 03-10-2011 |
20110073313 | DEVICE FOR FIXING A VALVE TO A TUBULAR MEMBER - A device for fixing a valve ( | 03-31-2011 |
20120145404 | CONTROLLING FLOW BETWEEN A WELLBORE AND AN EARTH FORMATION - A valve for controlling flow in a subterranean well can include a working fluid and a closure member which rotates in response to phase change in the working fluid. A well system can include a valve which controls flow between a wellbore and a tubular string, with the valve including a working fluid and a closure member which rotates in response to phase change in the working fluid. Rotation of the closure member can displace a seat relative to a plug of a check valve. | 06-14-2012 |
20120160503 | Surface Signal for Flow Blockage for a Subterranean Debris Collection Apparatus - The debris collection device operates on an eductor principle with motive fluid delivered from the surface into an eductor housing inlet. The eductor outlet goes into a surrounding annular space and splits with some flow going to the mill below to direct cuttings into the passage in the housing. The cuttings remain in the housing and the flow continues through a screen in the housing passage before reaching the eductor inlet. An auxiliary inlet is normally closed and opened with a reduced flow entering through the mill. The opening of the auxiliary inlet drops the surface pressure delivered to the eductor to act as a surface signal that a plugged or low debris laden inlet flow exists. | 06-28-2012 |
20120247780 | Thermally-Actuated Gas Lift Safety Valve - In one embodiment, a valve comprising a valve body; an orifice disposed within the valve body; a fluid flow restraining member located at a first location of the orifice, the fluid flow restraining member pivotable between a closed position and an open position; an extending member connected to, and moveable in pivotable synchronization with, the fluid flow restraining member; and a shape memory alloy element attached to the extending member and the valve body, the shape memory alloy element causing a pivotal movement of the extending member between positions corresponding to the open and closed positions responsive to a change in temperature of the shape memory alloy element. | 10-04-2012 |
20140116714 | Plunger Lift Apparatus - An improved bypass valve assembly for a plunger lift apparatus comprises a bypass valve cage having improved flow characteristics and a simplified clutch assembly having enhanced durability and low cost. | 05-01-2014 |
20150129232 | ROTATIONAL WELLBORE TEST VALVE - A rotationally activated downhole well valve for connection in a tubing string is disclosed that can be repeatedly opened and closed selectively to place the tubing string in communication with the annulus. The valve is moved between the closed position and the open position by rotating the string in the first direction. | 05-14-2015 |
20150292322 | FLUID PRESSURE PULSE GENERATOR AND METHOD OF USING SAME - A fluid pressure pulse generator comprising a stator and rotor that can be used in measurement while drilling using mud pulse or pressure pulse telemetry is disclosed. The stator comprises a stator body with a circular opening therethrough and the rotor comprises a circular rotor body rotatably received in the circular opening of the stator body. One of the stator body or the rotor body comprises one or more than one fluid opening for flow of fluid therethrough and the other of the stator body or the rotor body comprises one or more than one full flow chamber. The rotor is rotatable between a full flow configuration whereby the full flow chamber and the fluid opening align so that fluid flows from the full flow chamber through the fluid opening, and a reduced flow configuration whereby the full flow chamber and the fluid opening are not aligned. The flow of fluid through the fluid opening in the reduced flow configuration is less than the flow of fluid through the fluid opening in the full flow configuration thereby generating a fluid pressure pulse. | 10-15-2015 |
20150315870 | Composite Wellbore Ball Valve - A composite wellbore ball valve has a spherical, fiber reinforced composite ball valve closure. The closure has an interior, central through-bore and an annular metallic sealing surface. A ball carrying assembly has an annular, metallic sealing seat surface adapted to contact and form a metal-to-metal seal with the metallic sealing surface of the ball valve closure when the ball valve closure is closed. | 11-05-2015 |
20150354318 | AUTOMATIC TUBING DRAIN - An automatic tubing drain for rotary pumps automatically closes when the pump starts and opens when the pump stops using reactive torque generated by the pump. | 12-10-2015 |
20150376984 | BRIDGE-TYPE CONCENTRIC CONTINUOUSLY ADJUSTABLE WATER DISTRIBUTOR - The present invention provides a bridge concentric continuously adjustable water regulator, comprising: an outer tube; an adjusting sleeve disposed in the outer tube; a concentric valve connected below the adjusting sleeve, with a center of circle of the concentric valve being concentric to the outer tube; a water outlet which runs through a side wall of the outer tube and is connected to the concentric valve; a lower sealed section which is disposed in the outer tube and is below the concentric valve and the water outlet; and a bridge passage disposed in the side wall of the outer tube and outside the concentric valve and the lower sealed section. The present invention provides necessary conditions in order to satisfy single-layer testing of bridge concentric layered water injection, thereby realizing single-layer direct testing to improve the testing accuracy. By developing a bridge concentric continuously adjustable water regulator and its mated testing and adjusting instrument, it is possible to solve the problem of separate injection testing of a high-inclination well. | 12-31-2015 |
20160194935 | ADJUSTABLE CHOKE DEVICE FOR A PRODUCTION TUBE | 07-07-2016 |
166331000 | Lug in branched slot, e.g., "J" slot | 4 |
20110048725 | Isolation Valve for Subterranean Use - A valve on an inner string can only be closed with multiple movements in opposed directions that occur after a predetermined force is held for a finite time. Holding the force against resistance eventually allows movement that arms the valve. A set down and pickup force will then close the valve. The surrounding string has a constriction that interacts with a j-slot to rotate a wedge with a first peak into alignment with a peak on a second wedge that can only translate against a spring bias. The second wedge is eccentrically linked to a ball that rotates between and open and a closed position. | 03-03-2011 |
20110114324 | MODULAR HYDRAULIC OPERATOR FOR A SUBTERRANEAN TOOL - A modular pressure operated actuator can be coupled with a downhole tool to selectively operate it at least once. In the preferred embodiment the module 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. | 05-19-2011 |
20160177669 | Opposed Ramp Assembly for Subterranean Tool with Load Bearing Lug and Anti-Jam Feature | 06-23-2016 |
20170234109 | FORCE MULTIPLYER USED TO ACTUATE A BALL VALVE | 08-17-2017 |