| Patent Number |
Title Of Patent |
Date Issued |
| RE32469 |
Side pocket mandrel |
August 11, 1987 |
| A high-strength side pocket mandrel for high pressure service having a full-opening bore throughout its length but having a bore of keyhole shape above its receptacle bore to provide minimal but ample space for operation of a kickover tool for installing devices in the receptacle bore an |
| RE32441 |
Side pocket mandrel and method of construction |
June 23, 1987 |
| An improved side pocket mandrel having a body comprising a one-piece main body section in which a main bore and a receptacle bore extend longitudinally therein and an upper body section having space therein for operating a kickover tool, welded together with a circumferential weld. In |
| RE32343 |
Well safety valve |
February 3, 1987 |
| A retrievable well safety valve in a cased well system including a tubing string, a dual packer downhole around the tubing sealing with the casing and submersible pump in the tubing string below the packer.The safety valve controls flow of pumped fluids through the tubing to surface and |
| RE31933 |
High temperature well packer |
July 2, 1985 |
| A well packer for use in geothermal wells or .[.stem.]. .Iadd.steam .Iaddend.injection wells. The packer can be anchored to the inner wall of a casing string to resist differential pressure in either direction. The anchoring means includes a single set of slip elements which are hydr |
| RE31313 |
Method and system for well testing |
July 19, 1983 |
| A well testing system and method in which a by-pass valve is positioned in the tubing and a probe run on a line from the surface opens and closes the valve with vertical movement of the probe. The probe when landed in the valve is exposed to formation fluids and may transmit back to the |
| RE31222 |
Microprocessor computerized pressure/temperature/time .[.down-hole.]. recorder |
April 26, 1983 |
| A .[.down-hole.]. temperature, pressure and time measuring and digital data storage tool, utilizing self-contained microprocessor-based data taking and data reduction, with power conservation realized by processor controlled powering of data transducers only during sample periods and |
| RE30988 |
Well tool |
July 6, 1982 |
| A well tool and more particularly a hanger assembly having an improved design for more effectively, reliably and economically hanging a liner or other well equipment in a well casing or the like. |
| RE30690 |
Seal |
July 28, 1981 |
| A sealing unit to be used in sealing system to block fluid flow between two spaced surfaces. The unit seats within a recess in one of the surfaces and includes a support to which is secured deformable sealing means having a pair of sealing members. A pressure differential across the unit |
| RE30070 |
Apparatus for treating wells |
August 14, 1979 |
| A method of and apparatus for treating wells to provide surface controlled subsurface safety systems in the wells, whether previously completed wells or newly completed wells. A method and apparatus is provided for installing receptacles in the well flow conductors below the surface for |
| H945 |
Connecting apparatus for two tubular members |
August 6, 1991 |
| A connecting apparatus for two tubular members including an adapter sleeve extending over the end portion of one of the members in a coaxial relationship therewith and adapted to abutt the end of the other member. A threaded nut means extends over the adapter sleeve in engagement the |
| H1116 |
Method for introducing reeled tubing into oil and gas wells |
December 1, 1992 |
| A method for introducing reeled tubing into oil and gas wells, in which a relatively stiff pipe segment is connected to the leading end of the reeled tubing before the reeled tubing is introduced into the well. The reeled tubing, with the pipe segment attached to its leading end, is |
| D277286 |
Solar powered valve control unit |
January 22, 1985 |
|
| 5419188 |
Reeled tubing support for downhole equipment module |
May 30, 1995 |
| A system for the inspection of a well borehole and the formation around the borehole. The system includes a sealed tubing at the lower end of which is mounted a fiberoptic telemetry module which receives various sensor modules for transmissions of sensed information to the surface. The |
| 5314026 |
Landing nipple |
May 24, 1994 |
| A safety valve landing nipple selectively provides a pin for closing communication in the bore between the first control line and the safety valve control line so that communication between the first control line and an insert safety valve in the landing nipple housing is achieved by |
| 5293551 |
Monitor and control circuit for electric surface controlled subsurface valve system |
March 8, 1994 |
| A control system for applying power to a solenoid operated valve in a well completion within a borehole. The control system includes a programmable power supply for selectively applying electric power to a solenoid coil of the valve. The control system operates to apply a higher value of |
| 5275038 |
Downhole reeled tubing inspection system with fiberoptic cable |
January 4, 1994 |
| A system for the inspection of a well borehole and the formation around the borehole. The system includes a pair of concentric reeled tubings for injecting a pair of fluids into a wellbore through a wellhead, one of said fluids being an optically transparent or acoustically homogenous fl |
| 5253705 |
Hostile environment packer system |
October 19, 1993 |
| A well packer isolation system (10) for use in hostile, corrosive environments is disclosed that comprises packer top sub (20), packer mandrel (22), setting sleeve (24), top slip support (26), slip (28), wedge (30), packer elements (32A, 32B, 32C), packer bottom sub (34), and shear p |
| 5249630 |
Perforating type lockout tool |
October 5, 1993 |
| A tubing retrievable safety valve, lockout tool and method of use are disclosed that are adapted to lock the valve open permanently and provide access to control line pressure by perforating the piston in the valve. The lockout tool comprises a track mandrel having a ramp slidably dispos |
| 5244046 |
Coiled tubing drilling and service unit and method for oil and gas wells |
September 14, 1993 |
| A coiled tubing service unit and method for oil and gas wells including a string of components extending above ground in coaxial alignment with said well and including an injector for injecting coiled tubing into the well and a sealing unit for preventing the flow of pressurized oil and |
| 5244044 |
Catcher sub |
September 14, 1993 |
| An improved catcher sub has a longitudinal flow passage and a collet slidably mounted around the flow passage in the sub housing. The collet has a number of fingers and each finger has a resilient seal segment. The collet is held and supported in up fingers contracted position where the |
| 5226483 |
Safety valve landing nipple and method |
July 13, 1993 |
| A safety valve landing nipple selectively provides communication between a surface control line and the internal bore of said landing nipple by use of a rotary member. A rotary shifting tool is used to rotate the rotary member so that a cutting means shears the end of a shearable plug in |
| 5224545 |
Eccentrically actuated perforating guns |
July 6, 1993 |
| A perforating gun is supported from the lower end of a side pocket mandrel. The perforating gun includes a mechanical detonator which is received within the side pocket receptacle bore. The mechanical detonator is actuated in response to striking engagement by a kickover tool. The side |
| 5219025 |
Method and apparatus for gravel packing a well through a tubing string |
June 15, 1993 |
| A gravel packing assembly which may be utilized in a method to gravel pack a well through the tubing string. The gravel pack assembly includes a crossover assembly which facilitates the pumping of a gravel slurry into a wellbore, and the taking of the fluid return through the tubing stri |
| 5211241 |
Variable flow sliding sleeve valve and positioning shifting tool therefor |
May 18, 1993 |
| A sliding sleeve valve useful in a flow conduit to control and vary area of openings open for flow through the valve. The valve has a sleeve having a through flow passage and the sleeve is moveable between open, intermediate and closed positions. When the sleeve is in open position, the |
| 5211226 |
Metal-to-metal seal for oil well tubing string |
May 18, 1993 |
| A straight bore metal-to-metal seal for connecting a tubing string to the mandrel of a well packer has a radially deflectable sealing member compressed between the internal bore surface of a tubular seal receptacle and the tubular body portion of a seal mandrel. The seal receptacle has a |
| 5203410 |
Blowout safety system for snubbing equipment |
April 20, 1993 |
| A blowout safety system particularly preferred for use in providing emergency protection when blowouts occur during snubbing operations due to unexpected surges in downhole pressure. The safety system comprises a spring biased valve assembly having a flapper adapted to seal off the u |
| 5199494 |
Safety valve, sealing ring and seal assembly |
April 6, 1993 |
| A downhole, inline well safety shutoff valve has a spring-loaded, normally closed flapper shutoff valve element that may be opened by a downwardly driven movement of an operator tube coaxially and slidably disposed within the tubing string bore. The operator tube is vertically driven by |
| 5197773 |
Running and pulling tool |
March 30, 1993 |
| An improved running or pulling tool which automatically connects to a lock mandrel when the improved tool dogs are inserted into a lock mandrel fishing neck. The dogs are releasably positioned for automatic connection by lower shear members. The tool is releasably positioned in a con |
| 5195585 |
Wireline retrievable jet cleaning tool |
March 23, 1993 |
| A wireline retrievable jet cleaning tool (10) comprising an adapter axle (12), a longitudinally extending axle (16), and a nozzle housing (14) rotatably mounted around the axle (16), the nozzle housing having at least two longitudinally spaced-apart nozzle sections (18A, 18B) adapted to |
| 5193614 |
Cable anchor assembly |
March 16, 1993 |
| A cable anchor assembly (16) for an inverted, cable deployed submersible pump (28) that comprises a cable tensioning device (18) adapted to preload the multwire rope members (38) of the power cable (30). The cable tensioning device (18) comprises threaded upper (32), middle (34) and |
| 5191173 |
Electrical cable in reeled tubing |
March 2, 1993 |
| An electrical cable assembly (10) comprising a cable core (12) and filler layer (16) encased in longitudinally welded reeled tubing (23) so as to restrict relative axial and longitudinal motion between the cable core (12) and reeled tubing (23). Small-diameter tubing (24) is optionally |
| 5190102 |
Sintered metal substitute for prepack screen aggregate |
March 2, 1993 |
| A prepack well screen assembly has a resistance welded outer screen concentrically mounted in radially spaced relation on a perforated mandrel, thereby defining an annulus in which a sintered metal prepack sleeve is loaded. The longitudinal spacing distance between adjacent turns of |
| 5188182 |
System containing expendible isolation valve with frangible sealing member, seat arrangement and |
February 23, 1993 |
| An isolation valve for a downhole well completion system having a one piece frangible, ceramic sealing element and an extrusion resistant resiliently faced valve seat and a method for the use thereof is presented. Said sealing element is biased to the closed position and rotatable within |
| 5183115 |
Safety valve |
February 2, 1993 |
| Disclosed is a new and novel poppet type safety valve useful in flow conduits in fluid storage well systems. The safety valve is programmable to automatically close at various predetermined ratios of production mass flow rate-ambient pressure to prevent undesirable high flow rates or |
| 5183114 |
Sleeve valve device and shifting tool therefor |
February 2, 1993 |
| Disclosed is a sliding sleeve valve and a selective pressure operated shifting tool engageable in the selected sleeve valve for shifting the valve sleeve between open and closed positions. The sleeve valve is connectible in a well conduit and is especially useful in highly deviated a |
| 5181569 |
Pressure operated valve |
January 26, 1993 |
| In the disclosed pressure operated valve, a sleeve valve controlling flow between outside and inside the valve is releasably connected in a housing when the sleeve valve is in open position. Pressure on a ball sealingly engaging the sleeve valve operates the sleeve valve from open to lat |
| 5180016 |
Apparatus and method for placing and for backwashing well filtration devices in uncased well bor |
January 19, 1993 |
| An earth well completion apparatus and method wherein a work string equipped for jet washing downhole filtration devices, such as well screens and for back washing said downhole filtration devices and containing multiple ball catcher subs which utilize the same drop ball to prevent the |
| 5180014 |
System for deploying submersible pump using reeled tubing |
January 19, 1993 |
| A method and system for deploying electric submersible pumps in oil wells using reeled tubing, comprising providing reeled tubing (10), providing an electric submersible pump (20) and connecting it to one end of the reeled tubing (10), providing electric cable (22) and connecting one end |
| 5176164 |
Flow control valve system |
January 5, 1993 |
| A flow control valve system for production of wells such as by gas lift including a downhole valve electrically or pressure pulse controlled from the surface including a valve having apparatus for controlling the flow rate through the valve by varying the valve orifice size over a contin |
| 5174379 |
Gravel packing and perforating a well in a single trip |
December 29, 1992 |
| A new gravel packing system is provided whereby a well may be perforated, gravel packed and placed on production with a single trip of the tool string into the well. The system will include a crossover assembly which has a closure mechanism operatively associated therewith. The closure |
| 5172717 |
Well control system |
December 22, 1992 |
| An electrically actuated downhole system for controlling and monitoring the flow of gas from a gas lift petroleum well in which a borehole penetrates at least two spacially separated geological production zones, and at least two strings of parallel tubing extend along the interior of a w |
| 5159981 |
Flapper valve |
November 3, 1992 |
| A flapper valve assembly when closed permits flow through in one direction and prevents flow in the opposite direction. When open, two way flow may occur and the flapper valve member is biased toward closed position, to sealingly engage an annular seat, by one or more springs in the wall |
| 5156206 |
Tubing connector |
October 20, 1992 |
| A connector for connecting tubing to a component in a downhole well completion system in which a sub is provided for connection to the component and a sleeve extends over a portion of the sub to define a mandrel for receiving the tubing. A plurality of locking slips extend in windows |
| 5152343 |
Reeled tubing gas lift mandrel |
October 6, 1992 |
| A gas lift valve mandrel especially adapted for mounting on reeled tubing used in a well including a mandrel body in at least two sections comprising a gas lift valve adapter and a clamp which are secured together around the tubing, the adapter including structure for mounting a gas lift |
| 5146994 |
Packing assembly for use with reeled tubing and method of operating and removing same |
September 15, 1992 |
| A packing assembly which is connectable to reeled tubing and which can be inserted in and pushed through a wellbore tube by the reeled tubing. The packing assembly is hydraulically set in a locking and sealing position in the wellbore by fluid introduced from the reeled tubing and, after |
| 5146984 |
Emergency release device for connecting between tubular members in oil and gas wells |
September 15, 1992 |
| A device for connecting between two tubular members that are inserted in an oil and gas earth well in a manner to permit a quick release, yet prevent relative rotation between the tubular members. The device is adapted to pass fluid between the tubular member in their connected position. |
| 5145228 |
Running and pulling tool |
September 8, 1992 |
| A running and pulling tool is disclosed which is releasably connectible to a fishing neck on a well tool. The running pulling tool has an elongate mandrel on which a connector having dogs is slidably mounted for connecting to and releasing the dogs from a fishing neck. The connector is |
| 5145005 |
Casing shut-in valve system |
September 8, 1992 |
| A casing shut-in valve system (74) having a flapper valve assembly (34) and a shift head assembly (76); the flapper valve assembly (34) having an upper body member (36), lower body member (38), flow sleeve (40), valve seat sleeve member (42), flapper (54), flapper hinge assembly (56), an |
| 5141053 |
Compact dual packer with locking dogs |
August 25, 1992 |
| A compact, retrievable packer has a unitary mandrel body which is intersected by one or more longitudinal production bores. The running length of the packer is reduced and premature set/release are prevented by a lock assembly which releasably locks the lower setting wedge to the pac |
| 5141023 |
Flow actuated safety valve |
August 25, 1992 |
| A retrievable subsurface safety valve positioned in a well conduit is actuated to close by a predetermined flow rate through the safety valve. A valve member having a sealing surface is moveable by flow to sealingly engage an annular seat in the valve, closing the valve to flow. All form |
