| Patent Number |
Title Of Patent |
Date Issued |
| 7387164 |
Method and apparatus for selective injection or flow control with through-tubing operation capac |
June 17, 2008 |
| An in-line flow control device for a well chokes flow through a conduit while allowing access therethrough. |
| 6892816 |
Method and apparatus for selective injection or flow control with through-tubing operation capac |
May 17, 2005 |
| An in-line flow control device for a well chokes flow through a conduit while allowing access therethrough. |
| 6631767 |
Method and apparatus for selective injection or flow control with through-tubing operation capac |
October 14, 2003 |
| A downhole flow control device is provided for remotely controlling fluid flow of production or injection fluids, and may offer the capacity to pass wireline tools therethrough. In a broad aspect, the device may include: a body member having a first bore extending from a first end of the |
| 6491102 |
Downhole multiplexer and related methods |
December 10, 2002 |
| In a broad aspect, the present invention is a downhole hydraulic multiplexer, which is comprised of one or more piloted shuttle valves, and method of using. The invention takes one or more input signals from a surface control panel or computer, said signals may be electric or hydraul |
| 6422312 |
Multizone production monitoring system |
July 23, 2002 |
| In a multiple well completion, spaced apart production packers isolate independent production zones from one another. In each isolated production zone, a side pocket mandrel with a full opening bore has lengthwise extending side by side elongated pockets (1) for receiving a static pr |
| 6247536 |
Downhole multiplexer and related methods |
June 19, 2001 |
| In a broad aspect, the present invention is a downhole hydraulic multiplexer, which is comprised of one or more piloted shuttle valves, and method of using. The invention takes one or more input signals from a surface control panel or computer, said signals may be electric or hydraul |
| 6026897 |
Communication conduit in a well tool |
February 22, 2000 |
| An improved apparatus for transmitting signals through a well tool is provided. In a broad aspect, the present invention is a communication conduit in a well tool comprising: a cylindrical mandrel having a longitudinal bore therethrough, an inner diameter, an outer diameter, and an o |
| 6012518 |
Electro-hydraulic well tool actuator |
January 11, 2000 |
| An electro-hydraulic well tool actuator is provided to control fluid-actuated well tools. The actuator may include a cylindrical housing at least one hydraulic fluid flowpath within the housing, a communication link sealably connected to the housing on one end and a control panel loc |
| 5996687 |
Full bore variable flow control device |
December 7, 1999 |
| A variable flow control device having a substantially cylindrical housing with a valve element connected to an inner surface thereof. The valve is movable between an open position and a closed position in the bore. One or more flow control orifices are located in the valve element for |
| 5960874 |
Apparatus for remote control of multilateral wells |
October 5, 1999 |
| A method and apparatus for selectively producing fluids from multiple lateral wellbores that extend from a central wellbore. The apparatus comprises a fluid flow assembly with a selectively openable and adjustable flow control valve in communication with a production tubing, located in |
| 5927401 |
Method and apparatus for remote control of multilateral wells |
July 27, 1999 |
| A method and apparatus for selectively producing fluids from multiple lateral wellbores that extend from a central wellbore. The apparatus comprises a fluid flow assembly with a selectively openable and adjustable flow control valve in communication with a production tubing, located in |
| 5918669 |
Method and apparatus for remote control of multilateral wells |
July 6, 1999 |
| A method and apparatus for selectively producing fluids from multiple lateral wellbores that extend from a central wellbore. The apparatus comprises a fluid flow assembly with a selectively openable and adjustable flow control valve in communication with a production tubing, located in |
| 5861562 |
Flow measurement mandrel |
January 19, 1999 |
| A flow measurement having a substantially cylindrical housing with a valve element connected to an inner surface thereof. The valve is movable between an open position and a closed position in the bore. A secondary flow passageway is formed in the housing and extends along the longit |
| 5823263 |
Method and apparatus for remote control of multilateral wells |
October 20, 1998 |
| A method and apparatus for selectively producing fluids from multiple lateral wellbores that extend from a central wellbore. The apparatus comprises a fluid flow assembly with a selectively openable and adjustable flow control valve in communication with a production tubing, located in |
| 5494105 |
Method and related system for operating a downhole tool |
February 27, 1996 |
| A method and related system for operating a downhole tool connected to coiled tubing comprises introducing the tool and the coiled tubing into a wellbore providing to the earth's surface a signal indicative of compression, tension and/or impact forces applied to the tool, using the s |
| 5394951 |
Bottom hole drilling assembly |
March 7, 1995 |
| A bottom hole drilling assembly connectable to coiled tubing comprises a downhole motor to rotate a drill bit, articulated sub for causing the drill bit to drill a curved bore hole when a second portion thereof is bent from coaxial orientation with a first portion, steering tool for |
| 5348088 |
Coiled tubing external connector with packing element |
September 20, 1994 |
| A well connector connectable to the outside of coil tubing for coupling the tubing to another member. The connector includes a tubular body externally enclosing the end of the coil tubing and a second end for connection to another member. A slip housing is threadably connected to the fir |
| 5314032 |
Movable joint bent sub |
May 24, 1994 |
| A movable joint bent sub for attachment to a well conduit for use in deviated drilling of a well. An elongated housing is provided having one end for attachment to a well conduit, a mandrel is telescopically movable in the bore of the housing, and a movable body is pivotally connected to |
| 5311939 |
Multiple use well packer |
May 17, 1994 |
| A well packer for engaging and sealing against the inside of a conduit having a mandrel, friction blocks, slips, and a packer seal. The friction blocks are supported by the mandrel and positioned parallel to the slips providing a short inexpensive packer. The packer can be quickly and ea |
| 5257663 |
Electrically operated safety release joint |
November 2, 1993 |
| A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve |
| 5236047 |
Electrically operated well completion apparatus and method |
August 17, 1993 |
| A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve |
| 5230383 |
Electrically actuated well annulus safety valve |
July 27, 1993 |
| A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve |
| 5226491 |
Solenoid operated blanking block valve |
July 13, 1993 |
| A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve |
| 5207272 |
Electrically actuated well packer |
May 4, 1993 |
| A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve |
| 5165480 |
Method and apparatus of locking closed a subsurface safety system |
November 24, 1992 |
| Locking closed a subsurface safety system in a well production tubing from the well surface by releasably holding the subsurface safety valve in the open position. Thereafter closing the subsurface safety system from the well surface through a control line extending exteriorly of the pro |
| 4983803 |
Method of making a subsurface well safety valve |
January 8, 1991 |
| A subsurface safety valve is made by the steps of coating a hard seat in the inside surface of a circular tubular member, honing the inside of the tubular member, drilling a hole in a circular plane perpendicular to the axis of the tubular member to form hinge holes in the future cut out |
| 4926945 |
Subsurface well safety valve with curved flapper and method of making |
May 22, 1990 |
| A subsurface well safety valve having a curved flapper closure member and method making. The curved flapper has a concave sealing surface coacting with a valve seat. A flow tube has a lower end contoured to the flapper sealing surface. A flapper can be made out of a tubular member in whi |
| 4844166 |
Method and apparatus for recompleting wells with coil tubing |
July 4, 1989 |
| A method and apparatus for recompleting an oil and/gas well inside of an existing well tubing in a well by supporting a coil tubing in the well tubing from a hanger assembly. A hydraulically actuated safety valve is connected in the coil tubing for controlling fluid flow through the coil |
| 4791991 |
Subsurface well safety valve with hydraulic strainer |
December 20, 1988 |
| The combination of a subsurface well safety valve which is controlled through a hydraulic fluid line extending from the well surface to the safety valve of a hydraulic strainer including a chamber positioned above the actuating hydraulic piston and cylinder assembly of the safety valve. |
| 4771831 |
Liquid level actuated sleeve valve |
September 20, 1988 |
| A tubing retrievable, hydrostatically operated liquid sleeve valve to control and shut off well production to the well surface of a producing well. The sleeve valve includes a port for supplying production fluid through the well annulus for pumping. When the pump stops, the liquid le |
| 4718488 |
Pump-out plug system for a well conduit |
January 12, 1988 |
| A landing nipple having a landing sub is adapted to be connected to a production well conduit. When temporarily abandoning the well, a pump-out plug is seated in the landing sub and includes a bi-directional valve which allows flow through the plug when running and after seating seals in |
| 4703805 |
Equalizing means for a subsurface well safety valve |
November 3, 1987 |
| A subsurface well safety valve having an equalizing line between a point below the safety valve and a point above the safety valve and an equalizing valve in the line. A sleeve valve is releasably locked in a first position opening the equalizing line and in a second position closing |
| 4694908 |
Method and apparatus of injecting fluid into a well conduit by coil tubing |
September 22, 1987 |
| Injecting fluid by inserting a coil tubing having a fluid outlet and a valve above the outlet into a well conduit, biasing the valve to a closed position with a sufficient force to at least balance the hydrostatic force of injection fluid in the tubing, inserting a fluid to be injected i |
| 4688593 |
Well reverse flow check valve |
August 25, 1987 |
| A reverse flow check check valve for use in a pumping well to prevent backflow when the pump is shut down in which the valve has pump through capabilities for killing the well. The valve includes a housing having a bore with a valve closure element in the bore. A flow tube telescopically |
| 4605070 |
Redundant safety valve system and method |
August 12, 1986 |
| A first well tubing with a tubing retrievable safety valve having a bore of substantially the same size as the bore of the first well tubing. A second well tubing is connected to the first well tubing above the first well tubing and extends to the well surface and the second well tubing |
| 4600055 |
Tubular well tool receiving conduit |
July 15, 1986 |
| A tubular well tool receiving conduit for receiving a well tool having anchoring teeth in which a plurality of circular extending grooves on the inside on the conduit are provided for coacting with the anchoring teeth for supporting the well tool. Preferably the grooves match the tooth |
| 4562854 |
Piston actuated chemical injection valve |
January 7, 1986 |
| An injection valve for injecting chemicals into a well which is actuated by a piston having an upwardly and a downwardly directed metal cup seal with a resilient seal therebetween and a gas pressure charge above the piston acting to close the injection valve. Oil may be provided in the b |
| 4531581 |
Piston actuated high temperature well packer |
July 30, 1985 |
| A well packer for use in a well bore having initially retracted packing seal and slip means which are actuated by hydraulic pistons, the improvement in various seals which allow the packer to be used in high temperature environments. The pistons are ring shaped with cup-shaped sealin |
| 4444403 |
Thermal and/or corrosion seal for a well tool |
April 24, 1984 |
| A seal on a well tool for sealing off the space between two well members consisting of an encapsulated polyelastic thermal and/or corrosive seal. The seal includes an outer protective layer which physically protects the seal as it is moved into place and set and which is preferably of a |
| 4362214 |
Tubing retrievable variable setting differential pressure actuated well safety valve |
December 7, 1982 |
| A tubing retrievable differential pressure operated well safety valve which closes at a predetermined rate of flow which may be changed from the well surface. A housing is adapted to be threadedly connected to well tubing. A spring forces a flow tube and choke bean downwardly to normally |
| 4141413 |
Hydraulic actuated weight set well packer |
February 27, 1979 |
| A well packer for connection in a well tubing in a well in which the body has an internal diameter as great as the tubing in which it is to be inserted and has a tensile strength greater than the tubing. Packing surrounds the body and a longitudinally movable expander is positioned a |
