| Patent Number |
Title Of Patent |
Date Issued |
| RE36880 |
Spoolable flexible hydraulic controlled coiled tubing safety valve |
September 26, 2000 |
| A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to |
| RE36723 |
Spoolable coiled tubing completion system |
June 6, 2000 |
| A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to |
| RE36566 |
Spoolable coiled tubing mandrel and gas lift valves |
February 15, 2000 |
| A spoolable, flexible sidepocket mandrel positioned in a coiled tubing having an orienting sleeve, a sidepocket, and a deflector guide in which the pocket includes a plurality of separate pocket parts and the guide includes a plurality of separate guide parts, all secured to the inside o |
| RE36525 |
Spoolable flexible hydraulically set, straight pull release well packer |
January 25, 2000 |
| A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to |
| 6704689 |
Complexity index methodology for the analysis of run life performance |
March 9, 2004 |
| A system and method for predicting a specific aspect, such as run life, of a component or system. The system utilizes a variety of complexity index values that are assigned to each component of the system. Each complexity index value is determined according to select physical parameters |
| 6545221 |
Splice system for use in splicing coiled tubing having internal power cable |
April 8, 2003 |
| A system for splicing coiled tubing used in deploying downhole equipment and having an internal power cable. The system includes first and second segments of coiled tubing each having power cable disposed therein. Additionally, mounting fixtures are attached to the ends of the coiled |
| 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 |
| 6424105 |
Real-time control of feedback signals to a motor for optimum performance |
July 23, 2002 |
| An electric motor that may be used in a remote location, such as in a wellbore for pumping production fluids. The electric motor is designed to permit real-time adjustment of the position feedback signals to optimize motor performance. A position sensor is coupled to the rotor to sense |
| 6424066 |
System for reducing wear and improving longevity of a electric submergible pumping system |
July 23, 2002 |
| An electric submergible pumping system having a submergible electric motor with a unique rotor bearing system to promote longevity of the motor. The system includes an electric motor having a housing and a stator mounted within the housing. A shaft is rotatably mounted within the housing |
| 6409485 |
System and method for sealing an electrical connection between a power cable and a submersible d |
June 25, 2002 |
| A sealing system that provides a secure seal against liquid transfer in harsh environments, such as those found in wellbore applications. The sealing system utilizes a connector housing having an axial passage. The interior passage is sized to receive at least a portion of a single s |
| 6397945 |
Power cable system for use in high temperature wellbore applications |
June 4, 2002 |
| A submersible pumping system for use in high temperature, wellbore applications. The system includes an electric submersible pumping unit, having at least a submersible motor, a motor protector and a submersible pump powered by the submersible motor. A uniquely designed power cable is |
| 6388353 |
Elongated permanent magnet synchronous motor |
May 14, 2002 |
| A permanent magnet synchronous motor system. The system uses a permanent magnet AC synchronous motor having an elongated housing, of the type used in progressive cavity pumping applications. Within the stator, a multi-section rotor is rotatably mounted. The rotor includes a plurality |
| 6371226 |
Drag-type rotary drill bit |
April 16, 2002 |
| There is provided a rotary drag-type drill bit comprising a bit body having a leading surface comprising a plurality of pads, at least some of the pads each having a wearable abrasive surface including particles of superhard material and defining an outer profile of the pad, at least a |
| 6364013 |
Shroud for use with electric submergible pumping system |
April 2, 2002 |
| A shroud for use with a submergible pumping system. The shroud is disposed over a submergible motor and includes fluid channels for conducting heat away from the submergible motor. The shroud is formed from a sheet material, such as sheet metal, to permit its use in wellbores having a |
| 6361280 |
System and method for locking parts to a rotatable shaft |
March 26, 2002 |
| An improved system for mounting components to a rotatable shaft. The improved system may include a pump having impellers keyed to a rotatable shaft. Diffusers cooperate with the impellers to conduct pumped fluid upward from the impeller. The improved system for mounting includes a pl |
| 6357530 |
System and method of utilizing an electric submergible pumping system in the production of high |
March 19, 2002 |
| A system for producing production fluids from a wellbore while removing gas that collects in pockets within the wellbore. The system includes an electric submergible pumping unit. The unit includes a submergible pump powered by a submergible motor. The fluid discharged by the pump is for |
| 6354740 |
Rolling cutter drill bits |
March 12, 2002 |
| A rolling cutter drill bit comprises a body and three legs, each leg having a cantilevered bearing spindle, a rolling cutter rotatably mounted on the bearing spindle, lubricant delivering means within the bearing spindle, and a floating thrust bearing element configured to carry onward t |
| 6338621 |
Volume reduction mandrel for use in pneumatic isostatic forging |
January 15, 2002 |
| A densified sintered product, such as a rolling cutter adapted for use in a steel tooth rolling cutter earth boring bit, has a layer of a metal powder applied to the external surface of the unsintered compact, the metal powder being melted to form a thin glaze of the melted metal powder |
| 6332499 |
Deployment tubing connector having internal electrical penetrator |
December 25, 2001 |
| A connector for use in a deployment system able to deploy and power a device, such as an electric submergible pumping system, in a well. The connector includes pluggable ends that permit connection adjacent segments, each having an outer section of tubing and an internal power cable. |
| 6325143 |
Dual electric submergible pumping system installation to simultaneously move fluid with respect |
December 4, 2001 |
| A dual submergible pumping system permits the production and/or injection of fluids from or into separate zones within a narrowly confined wellbore without commingling of fluids. The system includes at least first and second electric submergible pumping systems. Typically, the design all |
| 6318467 |
System and method for pumping and heating viscous fluids in a wellbore |
November 20, 2001 |
| A system for pumping and heating viscous fluids in a wellbore includes electrical power supplies, a switchboard, conductors, and a submergible pumping system having a pump and a submergible electric motor. The electrical power supplies are coupled to the submergible pumping system th |
| 6311776 |
Dual diverter and orientation device for multilateral completions and method |
November 6, 2001 |
| In a broad aspect, the invention is a downhole well tool for use within a well casing having a locking slot, an orienting profile, an alignment slot, and a lateral well bore window. The tool may broadly include a body member having a first and a second longitudinal bore extending the |
| 6307290 |
Piston motor protector, and motor and pumping system incorporating the same |
October 23, 2001 |
| A downhole pumping system includes a downhole pump that is coupled to a downhole motor. The downhole motor includes a motor protector that utilizes one or more retractable and extensible pistons, instead of an elastomeric bag, to accommodate motor oil contraction and expansion. The m |
| 6305402 |
Variable orifice gas lift valve for high flow rates with detachable power source and method of u |
October 23, 2001 |
| The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, |
| 6299672 |
Subsurface integrated production systems |
October 9, 2001 |
| A technique is described for producing fluids from a series of wells. Production fluids from production wells are raised from the wells and deposited in a separation unit. The production fluids typically include both liquid and gas phase components. The separation unit utilizes a plu |
| 6298921 |
Modular system for deploying subterranean well-related equipment |
October 9, 2001 |
| A modular system for deploying and powering a device, such as an electric submergible pumping system, in a well. The modular system includes a plurality of interconnectable segments that each include an outer section of tubing and an internal power cable. Each section includes a tubing |
| 6298917 |
Coiled tubing system for combination with a submergible pump |
October 9, 2001 |
| A coiled tubing system deploys an electric submergible pump system within a wellbore. The coiled tubing system includes an internal power cable for providing power to a submergible motor. Additionally, a control line, such as a hydraulic line, is disposed within the hollow interior of th |
| 6296061 |
Pilot-operated pressure-equalizing mechanism for subsurface valve |
October 2, 2001 |
| A subsurface valve with a pressure-equalizing mechanism is provided to permit pressure above and below a valve closure member to equalize prior to the opening of the valve closure member. The pressure-equalizing mechanism may be installed, for example, in the valve closure member or in |
| 6290430 |
System for pumping liquids having a low specific gravity from a subterranean storage cavern |
September 18, 2001 |
| A system and method for producing a low specific gravity liquid from underground storage. The system includes a subterranean cavern and a sump in fluid communication with a floor of the cavern. A bottom intake ESP system is deployed to draw liquid from the sump to fully drain the cavern |
| 6288470 |
Modular motor construction |
September 11, 2001 |
| A modular stator for use in an electric motor. The modular stator includes a plurality of stator sections and a plurality of connectors. The plurality of stator sections have conductors extending therethrough with exposed terminal ends. The connectors have corresponding conductive el |
| 6268672 |
System and method for protecting a submergible motor from corrosive agents in a subterranean env |
July 31, 2001 |
| A motor protector for use in protecting an electric motor in a subterranean environment. The motor protector utilizes a dual, flexible bladder system. One of the expandable bladders provides for the expansion and contraction of motor oil. The other expandable bladder contains a supply of |
| 6260627 |
System and method for improving fluid dynamics of fluid produced from a well |
July 17, 2001 |
| A system for pumping high gas-to-liquid ratio well fluids. The system includes a submersible pumping system having a submersible motor and a submersible pump driven by the motor. The system further includes deployment tubing, such as production tubing or coiled tubing, through which |
| 6260626 |
Method and apparatus for completing an oil and gas well |
July 17, 2001 |
| A technique is provided for supplying electrical power to a submersible pumping system in a well completion. The pumping system includes a submersible electric motor, a pump driven by the motor and a separator for separating liquid and gas phase components of the wellbore fluids. The gas |
| 6257792 |
Retaining ring |
July 10, 2001 |
| The invention is directed to a retaining ring for securing components along a shaft by transferring the compression load between the components, thereby preventing the adjacent components from separating. The retaining ring includes a pair of arcuate interlocking members having a first e |
| 6257333 |
Reverse flow gas separator for progressing cavity submergible pumping systems |
July 10, 2001 |
| A system for separating gas from a wellbore fluid as it is produced to the surface. The system includes a progressing cavity pump, a submergible electric motor and a fluid intake. The submergible electric motor is connected to the progressing cavity pump to drive the pump and draw we |
| 6250390 |
Dual electric submergible pumping systems for producing fluids from separate reservoirs |
June 26, 2001 |
| A dual submergible pumping system permits pumping of fluids from separate zones within a narrowly confined wellbore without commingling of fluids. The system includes a single deployment tubing from which a first and second submergible pumping system are suspended. The system further |
| 6247545 |
Single energizer face seal for rocks bits with floating journal bearings |
June 19, 2001 |
| The present invention is a self adjusting, volume balanced, single energizer rigid face seal for rolling cutter drill bits with floating journal bearings. Volume balancing is accomplished by utilizing a floating static seal between the rigid face seal ring and the bearing shaft. This |
| 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 |
| 6247535 |
Orienting and locking swivel and method |
June 19, 2001 |
| In a broad aspect, the invention is an orienting and locking swivel including: a locking ratchet housing having a longitudinal bore; a first tubular member partially disposed within the longitudinal bore of the locking ratchet housing; a second tubular member partially disposed within |
| 6242829 |
Submersible pumping system utilizing a motor protector having a metal bellows |
June 5, 2001 |
| A downhole pumping system includes a downhole pump that is coupled to a downhole motor. The downhole motor includes a motor protector that utilizes one or more retractable and extensible bellows, instead of an elastomeric bag, to accommodate motor oil contraction and expansion. |
| 6241022 |
Control line connector |
June 5, 2001 |
| The present invention is a connector which connects a first control line in a downhole well tool to a second control line. The connector may include a main body having a longitudinal bore therethrough, a tubular extension threadably secured within a mounting bore in the well tool, and a |
| 6241015 |
Apparatus for remote control of wellbore fluid flow |
June 5, 2001 |
| An apparatus for remotely controlling fluids in a well is provided. The flow control apparatus may include a body member having a flow port in an outer wall of the body member, and a flow aperture spaced inwardly from the outer wall. A remotely shiftable valve member may be disposed for |
| 6237693 |
Failsafe safety valve and method |
May 29, 2001 |
| A subsurface well safety valve having a flow tube telescopically movable in a housing for controlling the movement of a valve closure member. A piston and cylinder assembly actuates the flow tube and is in communication with hydraulic control fluid from the well surface on one side and a |
| 6237683 |
Wellbore flow control device |
May 29, 2001 |
| A device for regulating fluid flow in a well is provided. The device may include: a body member having a central bore extending therethrough, at least one flow port, and a first valve seat; a sleeve member movably disposed within the central bore of the body member, and having a second |
| 6231312 |
Variable orifice gas lift valve for high flow rates with detachable power source and method of u |
May 15, 2001 |
| The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, |
| 6230810 |
Method and apparatus for producing wellbore fluids from a plurality of wells |
May 15, 2001 |
| A technique is described for producing fluids from a series of wells. Production fluids from production wells are raised from the wells and deposited in a collection well. The production fluids may include both liquid and gas phase components. The collection well may serve to permit |
| 6213202 |
Separable connector for coil tubing deployed systems |
April 10, 2001 |
| A connector permits separation of a submergible pumping system from its deployment system. The connector includes an upper assembly and a lower assembly that are connected by shear screws. A hydraulic separation mechanism is used to shear the shear screws and separate the upper and l |
| 6209653 |
Well lock with multiple shear planes and related methods |
April 3, 2001 |
| In a broad aspect, the invention is directed to a well locking device having a shear ring for retaining a setting wedge within a well lock housing during running, setting, locking, and removing the well locking device within a bore of a well tubing. In a particular embodiment, the we |
| 6209649 |
Selective re-entry tool for multiple tubing completions and method of using |
April 3, 2001 |
| A selective re-entry tool is provided that allows an operator at the earth's surface to perform intervention operations in one or more completion strings by allowing remote discrimination and orientation of a tool string to a target location in a single comingling completion string. |
| 6206097 |
Vertical pumping system |
March 27, 2001 |
| A pumping assembly for use on an offshore drilling platform. The pumping assembly includes a vertical pump designed for mounting on the deck of an offshore drilling platform. The pump is a vertical pump that includes a fluid intake, a fluid discharge, a rotatable shaft, and a fluid drivi |
