Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 8171988 | Stroker tool A stroker tool for providing an axial force in an axial direction of a downhole tool. The stroker tool has a pump, a driving unit for driving the pump, and an axial force generator. The generator has an elongated piston housing having a first and a second end, and a... | 05/08/2012 |
| 8127834 | Modular electro-hydraulic controller for well tool An actuator control system includes a housing assembly having at least one line therein for controlling operation of an actuator, and a modular controller attached externally to the housing assembly and interconnected to the line. A method of constructing an actuato... | 03/06/2012 |
| 8113273 | Power cable for high temperature environments An electric power cable for high temperature environments includes an electric conductor; an electrical insulator disposed on the electric conductor to form an insulated conductor, the electrical insulator suited for operation in a high temperature environment; and ... | 02/14/2012 |
| 7730937 | Electric submersible pump and motor assembly An assembly for downhole applications comprises has an electric motor, a pump driven by the electric motor and having a lower pump inlet and an upper pump outlet, and a deployment tube from which the assembly is suspended from and by means of which the assembly can ... | 06/08/2010 |
| 7686074 | Apparatus and method for active circuit protection of downhole electrical submersible pump monitoring gauges Embodiments of the present invention beneficially provide circuits and methods which isolate downhole electronics of a well pump assembly from a power surge. The pump assembly includes a motor and a housing, including head, base, and manifold plate. The head has a h... | 03/30/2010 |
| 7549467 | Wellbore motor having magnetic gear drive A wellbore motor includes a source of rotational motive power disposed in a wellbore, a magnetic gear member operatively coupled at an input thereof to the source; and a magnetic gear member output coupled rotationally to a rotary wellbore tool. ... | 06/23/2009 |
| 7510001 | Downhole actuation tools Various technologies described herein involve apparatuses for actuating a downhole tool. In one implementation, the apparatus may include a pressure sensor for receiving one or more pressure pulses and an electronics module in communication with the pressure sensor.... | 03/31/2009 |
| 7378769 | Electric motors for powering downhole tools An electric motor for powering downhole tools comprises a first stator (32) including a first set of coil windings (73), a second stator including a second set of windings, an axially located rotatable shaft (92) including a first magnetic eleme... | 05/27/2008 |
| 7373971 | Pump jack and method of use An electromagnetic ram for use in artificially lifting fluid from a well and in particular an oil well. The disclosure also teaches a method and system employing the ram. The use obviates existing systems used today in terms of cost, environmental concerns, optimize... | 05/20/2008 |
| 7370697 | Thrust section wear preventor A thrust section for use above a motor preferably includes a housing, a thrust shaft, a thrust runner connected to the thrust shaft, a thrust bearing connected to the housing, and a motor lead guard. The motor is preferably positioned above a pump assembly. The thru... | 05/13/2008 |
| 7367400 | Motor protector and method for chemical protection of same A chamber for use in a submersible pump assembly. The submersible pump assembly has a submersible motor which is connected to a power source and which will drive a submersible pump in the submersible pump assembly. A motor protector with expansion chamber is connect... | 05/06/2008 |
| 7363980 | Downhole flow control apparatus, operable via surface applied pressure Flow control apparatus, for placement in a downhole location in the tubing string of a well. The apparatus comprises a valve element and a lock element. Application and removal of annulus pressure (on the annulus between the tubing and the casing) permits the appara... | 04/29/2008 |
| 7357197 | Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface A method and apparatus for signalling the surface operator about downhole conditions. Sensors located downhole collect data while drilling and the data is processed to determine bit failure, for example. When the sensor data indicates a failure, the pressure of dril... | 04/15/2008 |
| 7357185 | Subsea tubing hanger assembly for an oil or gas well A subsea tubing hanger assembly is disclosed which comprises a tubing hanger (12) having a plurality of conduits (14). A pup joint (16) is connected to the hanger (12) and a shroud (20) surrounds the pup joint (16). A plural... | 04/15/2008 |
| 7350590 | Instrumentation for a downhole deployment valve The present generally relates to apparatus and methods for instrumentation associated with a downhole deployment valve or a separate instrumentation sub. In one aspect, a DDV in a casing string is closed in order to isolate an upper section of a wellbore from a lowe... | 04/01/2008 |
| 7347003 | Device to measure axial displacement in a borehole A device to measure minute displacement in rocks, including anchor deployment means, anchor registration means, and frame release means. Further including anchor units comprising a fixed anchor point, a reversible anchor actuator and a deployable anchor face capable... | 03/25/2008 |
| 7322410 | Controllable production well packer An apparatus and method for operating an electrically powered device in a packer using the piping structure of the well as an electrical conductor for providing power and/or communications. The electrically powered device may comprise an electrically controllable va... | 01/29/2008 |
| 7316270 | Oil pumping unit using an electrical submersible pump driven by a circular linear synchronous three-phase motor with rare earth permanent magnet An oil pumping unit is disclosed to include a motor, which has a mover that moves alternately up and down when the motor is electrically connected, and a pump, which has a barrel, an oil suction pipe mounted in the barrel, an inner sleeve, which is connected to the ... | 01/08/2008 |
| 7308943 | Well operations system A wellhead has, instead of a conventional Christmas tree, a spool tree in which a tubing hanger is landed at a predetermined angular orientation. As the tubing string can be pulled without disturbing the tree, many advantages follow, including access to the producti... | 12/18/2007 |
| 7287591 | Primary electro-mechanical initiating dump bailer device and method of use Electro-mechanically initiated dump bailer devices are disclosed generally comprising a top assembly and one or more bottom assemblies, the top assembly having a means for transferring electrical power from a surface power supply through the top end of the assembly,... | 10/30/2007 |
| 7259688 | Wireless reservoir production control A reservoir production control system includes a plurality of wells for producing a reservoir linked to a central computer over a downhole communication network and a surface communication network. Both the downhole and the surface communication networks are wireles... | 08/21/2007 |
| 7252143 | Method and apparatus for anchoring tool in borehole conduit A free point tool has at least one sensor to measure deformation of a stuck conduit in a borehole. A set of anchors is located adjacent to and on each side of the sensor. The anchors include anchor arms that move from a stowed position to an extended position. Each ... | 08/07/2007 |
| 7228898 | Gravel pack completion with fluid loss control fiber optic wet connect A gravel pack completion with fluid loss control and fiber optic wet connect. In a described embodiment, a system for completing a subterranean well includes multiple assemblies installed in a wellbore. Each assembly has a fiber optic line. The fiber optic lines are... | 06/12/2007 |
| 7225876 | Connector assembly A reciprocable connector assembly for coupling a service line through a path in a wellhead and hangar wall, the assembly comprising: connector for coupling with a corresponding connector disposed in the hangar wall; a shuttle carrying said connector between a first ... | 06/05/2007 |
| 7208855 | Fiber-optic cable as integral part of a submersible motor system Apparatus, systems and methods are provided for transmission of optical signals through a wellbore whereby optic fibers are protected from exposure to harsh downhole fluids and conditions. The system comprises a power cable assembly running down hole from the surfac... | 04/24/2007 |
| 7207322 | Supercharger installation with load control for internal combustion engines An impulse turbocharger for an internal combustion engine. The impulse turbocharger is adapted to be used for controlling the air flow of an air supply conduit on the intake side of an internal combustion engine. The impulse turbocharger has a rotary valve which is ... | 04/24/2007 |
| 7201231 | Apparatuses and methods for deploying logging tools and signalling in boreholes The apparatus includes a pump for circulating pressurized fluid in a wellbore. A control device controls the pump which a conduit interconnects to the wellbore. A downhole transducer detects changes in fluid pressure at a downhole location and generates signals acco... | 04/10/2007 |
| 7201232 | Washpipeless isolation strings and methods for isolation with object holding service tool An isolation string having an upper packer and an isolation pipe in mechanical communication with the upper packer, the isolation pipe comprises an operable valve and an object activated valve. An object holding service tool is adapted to release an object to activa... | 04/10/2007 |
| 7199497 | Frameless switched reluctance motor and application as a top drive for a rotary pump A frameless switched reluctance motor (SRM) has a stator sandwiched between two housings. Axial load on the rotor shaft is directed through a first bearing, through the first housing to the stator and through the second housing to a motor support. Heat is dissipated... | 04/03/2007 |
| 7191829 | Gripper assembly for downhole tools A gripper assembly for anchoring a tool within a downhole passage and for possibly assisting movement of the tool within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the ... | 03/20/2007 |
| 7193150 | Submersible pump cable with air line A submersible pump cable includes a conductive wire and an air line. The air line is structured to determine the depth at which the submersible pump cable lies beneath a liquid. ... | 03/20/2007 |
| 7188669 | Motor cooler for submersible pump A motor cooler for an electrical submersible pump (ESP). The ESP is typically deployed within casing and defines an annular space between the ESP and the casing. The ESP includes a pump having an intake, a motor cooler pump having an output port, a seal section belo... | 03/13/2007 |
| 7187620 | Method and apparatus for borehole sensing The present invention provides an apparatus and method for sensing subsurface data. One embodiment of the invention comprises a shuttle attached to a conveyance where the conveyance and shuttle are adapted to be spooled downhole into a borehole for sensing seismic d... | 03/06/2007 |
| 7178627 | Methods for use in detecting seismic waves in a borehole The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selectiv... | 02/20/2007 |
| 7170424 | Oil well casting electrical power pick-off points A power supply apparatus is provided for supplying power and communications within a first piping structure. An external power transfer device is positioned around the first piping structure and is magnetically coupled to an internal power transfer device. The inter... | 01/30/2007 |
| 7156181 | Puller-thruster downhole tool A method and apparatus for propelling a tool having a body within a passage. The tool includes a gripper including at least a gripper portion which can assume a first position that engages an inner surface of the passage and limits relative movement of the gripper p... | 01/02/2007 |
| 7156192 | Open hole tractor with tracks A downhole tractor is provided that may be used in open or cased wells, and is also designed for use in open holes having a variety of soil/formation consistencies (e.g., soft, firm, rigid, etc.), varying diameters and non-uniform and irregular bore profiles. The tr... | 01/02/2007 |
| 7152674 | Disconnect devices A disconnect device for use as part of a tubing string downhole in an oil or gas well and which comprises a tubular body, at least one slip held within the tubular body, and a sleeve housed within the tubular body to hold the at least one slip in coupling engagement... | 12/26/2006 |
| 7147059 | Use of downhole high pressure gas in a gas-lift well and associated methods A gas-lift petroleum well and method for producing petroleum products using downhole pressurized gas to provide lift. The gas-lift well having a well casing, a production tubing, a packer, and a gas-lift valve. The well casing extends within a wellbore of the well, ... | 12/12/2006 |
| 7124824 | Washpipeless isolation strings and methods for isolation An isolation string having: an upper packer; and an isolation pipe in mechanical communication with the upper packer, wherein the isolation pipe comprises a pressure activated valve and an object activated valve. A method having: running-in an isolation string on a ... | 10/24/2006 |
