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| Number | Title | Issue Date |
| 8186444 | Flow control valve platform A system that is usable with a well includes a tubing string that extends into an isolated zone of the well and a plurality of chokes modules that are disposed in the isolated zone to control communication between a passageway of the tubing string and the zone. Each... | 05/29/2012 |
| 8171999 | Downhole flow control device and method A downhole flow control device includes, a first member defining a first portion of a flow path, and a second member defining a second portion of the flow path, the flow path has a cross sectional flow area defined at least partially by the first member and the seco... | 05/08/2012 |
| 8118104 | Downhole valve with pass through ID A downhole valve assembly is attached to a drillstring and includes an upper drillstring connection, a lower drillstring connection, and a tubular body comprising a through bore, and further includes a weight activated mechanism configured to close the through bore ... | 02/21/2012 |
| 8113289 | Flow regulator for downhole progressing cavity motor A system for regulating the flow of fluid through a progressing cavity motor includes an annulus restriction (22) for restricting flow through the annulus passageway, and an annular biasing member (24) for biasing the annular restriction toward a close... | 02/14/2012 |
| 8042615 | Blow out protector valve employing ball baffle assembly for use with high-pressure fluids A Ball Baffle Blowout Preventer (BBBOP) (102) or shut-off valve generally comprises a housing (106) and a baffle (108) secured within the housing and containing a plurality of holes. The housing is mounted in the path of the well pipe but the ho... | 10/25/2011 |
| 8011438 | Downhole flow control with selective permeability An apparatus includes a base pipe and a fluid control material. The base pipe includes openings, and the fluid control material is mounted to the pipe to control fluid communication through the openings of the pipe. The fluid control material has a permeability that... | 09/06/2011 |
| 8006767 | Flow control system having a downhole rotatable valve A flow control system includes a pump positioned in a well to remove liquid from the well. An isolation device having a valve body and a valve spool is positioned downhole of the pump. The valve spool is rotatably received by the valve body and is capable of rotatin... | 08/30/2011 |
| 8002042 | Actuatable subsurface safety valve and method A downhole tool includes, a tubular, a tooth profile on the tubular, at least one first actuatable latch complementary to the tooth profile and at least one second actuatable latch complementary to the tooth profile. The at least one second actuatable latch prevents... | 08/23/2011 |
| 7971651 | Shape memory alloy actuation An actuator for use in actuating a valve to control the flow of fluids through the valve, the valve having a valve member movable between positions opening and closing the valve. The actuator comprises one or more shape memory alloy elements each being transformable... | 07/05/2011 |
| 7971652 | Linear actuation system in the form of a ring A device for use in actuating a valve to control the flow of fluids through a flow tube comprises a stationary ring surrounding the flow tube, the ring having an inner diameter greater than an outer diameter of the flow tube. An interior of the ring and an exterior ... | 07/05/2011 |
| 7967071 | Electronic completion installation valve Apparatus and method for a providing a completion assembly for running at an end of a completion string which provides a remotely operable tubing mounted valve used to control the flow of fluids through the tubing in hostile well conditions. The tubing mounted compl... | 06/28/2011 |
| 7963339 | Bearing mounted ball valve and method of use A bearing mounted ball valve (10) comprises a housing (12) having a throughbore and a valve seat (16) and an apertured ball (18) mounted within the housing in continuous engagement with the valve seat. The apertured ball is rotatable by r... | 06/21/2011 |
| 7942206 | In-flow control device utilizing a water sensitive media An apparatus for controlling fluid flow into a tubular includes an in-flow control device having a plurality of flow paths; and a reactive media disposed in each of the flow paths. The reactive media may change permeability by interacting with a selected fluid such ... | 05/17/2011 |
| 7926572 | Ballistically compatible backpressure valve A backpressure valve. The backpressure valve may be configured to maintain a substantially controlled pressure in coiled tubing uphole thereof while simultaneously being compatible with a ballistically actuated tool downhole thereof. The valve may include a housing ... | 04/19/2011 |
| 7926571 | Cemented open hole selective fracing system A cemented open hole selective fracing system and method are shown. In the producing zone, an open hole is drilled therein and a production tubing is cemented in place. At preselected locations along the production tubing, the production tubing will have sliding val... | 04/19/2011 |
| 7921921 | Downhole backup system and method A downhole backup system includes, a tubular positionable within a downhole structure such that an annular space exists between the tubular and the downhole structure. The downhole backup system also includes, a plurality of wedges that are radially movably position... | 04/12/2011 |
| 7913765 | Water absorbing or dissolving materials used as an in-flow control device and method of use A device or system for controlling fluid flow in a well includes a flow restriction member that transitions from a first effective density to a second effective density in response to a change in composition of the flowing fluid. The flow restriction member may incr... | 03/29/2011 |
| 7900707 | Apparatus and method for selectively controlling fluid downhole in conjunction with a progressive cavity pump (PCP) An apparatus and a method for selectively controlling fluid flow. The apparatus includes a body member having a throughbore formed therein. The apparatus also includes at least one bypass port formed in the body member and a rotatable member arranged for insertion a... | 03/08/2011 |
| 7891430 | Water control device using electromagnetics An apparatus for controlling a flow of fluid in a well includes a flow control device and a generator that generates electrical energy in response to a flow of an electrically conductive fluid. The flow control device may include an actuator receiving electrical ene... | 02/22/2011 |
| 7866400 | Phase-controlled well flow control and associated methods Phase-controlled well flow control. A well system includes a flow control device which regulates flow of a fluid in the well system, the flow control device being responsive to both pressure and temperature in the well system to regulate flow of the fluid. A flow co... | 01/11/2011 |
| 7857061 | Flow control in a well bore A system for installation in a well bore includes a flow control device and a control unit coupled to the flow control device. The flow control device is changeable from a first state to a second state. The first state corresponds to a first mode of fluid communicat... | 12/28/2010 |
| 7832485 | Riserless deployment system A method of deploying a tool into a pressurized well is provided that includes providing the well with a wellhead having a blow out preventer coupled thereto; setting a pressure barrier within the well at a distance below the blow out preventer that is at least as l... | 11/16/2010 |
| 7832486 | Flapper gas lift valve A gas lift valve has a flow restrictor, a valve part on one side of the flow restrictor, a flow deflector and a tubular member on another side of the flow restrictor, and a flapper valve on the side of the flow restrictor where the tubular member is located, the fla... | 11/16/2010 |
| 7828065 | Apparatus and method of stabilizing a flow along a wellbore A system that is usable with a well includes a closed loop network that is located entirely downhole in the well. The system also includes valves that are located in a wellbore of the well and are interconnected by the closed loop network. Each valve is associated w... | 11/09/2010 |
| 7814982 | Downhole non-return valve and method Disclosed herein is a device that relates to a non-return valve. The valve comprising, a valve seat, a valve piston in operable communication with the valve seat. The valve further comprising, a first seal disposed at the piston to interact with the valve seat, and ... | 10/19/2010 |
| 7802626 | Mounts for blowout preventer bonnets and methods of use A mount for a bonnet of a blowout preventer includes at least one support member coupled to a body of the blowout preventer, and a bonnet mounting member moveably coupled to the at least one support member and adapted to move substantially normal to a face of the bo... | 09/28/2010 |
| 7798235 | Safety valve torsional spring assembly and method A safety valve assembly comprises a valve body, a flapper mount, flapper and a hinge used to rotate the flapper in an opened or closed position. Torsional pins are mounted adjacent the flapper mount, each having ends which extend into the hinge and terminating adjac... | 09/21/2010 |
| 7793728 | Gas lift plunger arrangement A plunger in a plunger lift system in an oil and gas well includes shaped grooves spaced along the plunger body, angled fins or below the grooves, an elongated interior cavity open at the bottom, and passages connecting the interior cavity to the grooves. The shape,... | 09/14/2010 |
| 7779918 | Wellbore control device A wellbore control device (10) for sealing a wellbore is described. The device has, in a preferred arrangement, two opposed cutting rams (16, 18) which are coupled to respective linkage mechanisms (26, 28). The linkage mechanisms translate axial... | 08/24/2010 |
| 7779919 | Flapper valve retention method and system A system and method for use in a wellbore that includes a string comprising a housing. The housing comprises a valve including a valve seat having an inner channel and a flapper configured to pivot relative to the valve seat between a first position and a second pos... | 08/24/2010 |
| 7730954 | Hydraulic control and actuation system for downhole tools A hydraulic control and actuation system for downhole tools. In a described embodiment, a hydraulic control and actuation system includes an internal chamber serving as a low pressure region and a well annulus serving as an energy source. A valve assembly provides s... | 06/08/2010 |
| 7717183 | Top-down hydrostatic actuating module for downhole tools An apparatus for actuating a downhole tool within a well bore comprises a cylindrical mandrel extending longitudinally through the downhole tool; an interventionless, hydrostatic, top-down actuating piston disposed about the mandrel and forming a first chamber and a... | 05/18/2010 |
| 7712540 | Flow control device A choke that is usable with a well includes an inlet port and an outlet port. The choke also includes pressure drop stages between the inlet port and the outlet port. Each of the pressure drop stages is adapted to create part of an overall pressure differential betw... | 05/11/2010 |
| 7699111 | Float collar and method A float collar 10 includes a housing 12 and a generally sleeve-shaped elastomer 20. The lower plate 30 and an upper plate 32 are each supported on an elongate rod 22, and at least one of the plates is axially fixed relative ... | 04/20/2010 |
| 7669661 | Thermally expansive fluid actuator devices for downhole tools and methods of actuating downhole tools using same An actuator device for setting a downhole tool is disclosed. The actuator device comprises a thermally expansive fluid within a chamber. Application of heat to the thermally expansive fluid causes the thermally expansive fluid to expand. In so doing, pressure within... | 03/02/2010 |
| 7665528 | Frangible flapper valve with hydraulic impact sleeve and method of breaking A frangible flapper valve that may be closed to hydraulically isolate a portion of a wellbore tubular. The flapper valve is made of a frangible material adapted to shatter upon impact from an impact sleeve. The sleeve may be used to initially hold open the flapper v... | 02/23/2010 |
| 7665526 | System and method for downhole operation using pressure activated and sleeve valve assembly An isolation system for producing oil and gas from one or more formation zones and methods of use are provided comprising one or more pressure activated and tool shiftable valve assemblies. The tool shiftable valve may be actuated before or after actuation of the pr... | 02/23/2010 |
| 7665527 | Providing a rechargeable hydraulic accumulator in a wellbore A rechargeable hydraulic accumulator is provided in a wellbore, and a component is actuated by discharging the hydraulic accumulator. The hydraulic accumulator is recharged by increasing pressure in a fluid conduit. ... | 02/23/2010 |
| 7650945 | Inflatable closure system A closure device that is useful as a safety valve within a tubular member, such as production tubing and pipelines. The closure device includes an inflatable bladder that is disposed within a cavity in the wall of the tubular member. A fluid conduit interconnects a ... | 01/26/2010 |
| 7644772 | Ball seat having segmented arcuate ball support member Apparatuses for restricting fluid flow through a well conduit comprise a housing having a longitudinal bore and a seat disposed within the bore. The seat has a first position when the apparatus is in the run-in position and a second position when the apparatus is in... | 01/12/2010 |
