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| Number | Title | Issue Date |
| 8113274 | Electric submersible pumping system with gas vent A technique is provided for pumping fluids from a wellbore. An electric submersible pumping system is deployed in a wellbore on a tubing. Free gas can potentially accumulate around the electric submersible pumping system, but a gas vent is positioned to remove free ... | 02/14/2012 |
| 7845399 | Downhole well pump An apparatus for use with production tubing to pump fluid from a well to the surface includes a tubular conduit having upper and lower portions. The lower portion has an inner or outer diameter greater than the diameter of the upper portion to form a first internal ... | 12/07/2010 |
| 7753115 | Flow control system having an isolation device for preventing gas interference during downhole liquid removal operations A flow control system includes a pump positioned in a wellbore to remove liquid from the wellbore. An isolation device is positioned downhole of the pump and is expandable within the wellbore between a sealed position and an unsealed position. The isolation device i... | 07/13/2010 |
| 7686075 | Downhole pump assembly and method of recovering well fluids The present invention relates to a downhole tool. In particular, the present invention relates to a downhole pump assembly, a downhole tool assembly including a downhole pump assembly, a well including a downhole pump assembly and to a method of recovering well flui... | 03/30/2010 |
| 7673676 | Electric submersible pumping system with gas vent A technique is provided for pumping fluids from a wellbore. An electric submersible pumping system is deployed in a wellbore on a tubing. Free gas can potentially accumulate around the electric submersible pumping system, but a gas vent is positioned to remove free ... | 03/09/2010 |
| 7431093 | Protection scheme and method for deployment of artificial lift devices in a wellbore A protection system for an artificial lift device including but not limited to electrical submersible pump (ESP) and an electrical submersible progressing cavity pup (ESPCP). The artificial lift device is suspended on a tubing string into a wellbore where the artifi... | 10/07/2008 |
| 7389816 | Three phase downhole separator process Three Phase Downhole Separator Process (TPDSP) is a process which results in the separation of all three phases, (1) oil, (2) gas, and (3) water, at the downhole location in the well bore, water disposal injection downhole, and oil and gas production uphole. ... | 06/24/2008 |
| 7370701 | Wellbore completion design to naturally separate water and solids from oil and gas A wellbore completion design is provided, which creates a convective flow action that separates water and sand from hydrocarbons during production of the hydrocarbons from a subterranean formation. A deviated section of the wellbore creates the desired effect. The w... | 05/13/2008 |
| 7367401 | Ported velocity tube for gas lift operations An apparatus for use with a packer set within a well bore comprises a first flow path providing fluid communication between the well bore above the packer and the well bore below the packer, and a second flow path. A system for gas lifting fluids from a well bore wi... | 05/06/2008 |
| 7350585 | Hydraulically assisted tubing expansion A method of expanding tubing comprises applying a varying fluid pressure across the wall of the tubing. The variation in pressure may be achieved by varying one or both of the fluid pressure within the tubing and the fluid pressure externally of the tubing. A body o... | 04/01/2008 |
| 7320364 | Inhibiting reflux in a heated well of an in situ conversion system Certain embodiments provide a method for treating a subsurface formation. The method includes using heaters to form a heated portion of the subsurface formation. A production conduit is used to direct formation fluid in a vapor phase from the heated portion of the s... | 01/22/2008 |
| 7275592 | Oil well pump apparatus An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into the production tubing. A prime ... | 10/02/2007 |
| 7255167 | Three phase downhole separator process Three Phase Downhole Separator Process (TPDSP) is a process which results in the separation of all three phases, (1) oil, (2) gas, and (3) water, at the downhole location in the well bore, water disposal injection downhole, and oil and gas production uphole. ... | 08/14/2007 |
| 7249633 | Release tool for coiled tubing A bottom hole assembly for use with fracturing or fracing a wellbore using coiled tubing is described having a first packing element and a second packing element on a mandrel. The bottom hole assembly may be run into the wellbore such that the packing elements strad... | 07/31/2007 |
| 7243730 | Well production optimizing system A well optimizing system and method for lifting fluid that accumulates and retards production in a well. The system includes a plunger having a piston and a detachable plugh. The piston has a sealing section and a retrieval end and defines a passage through the leng... | 07/17/2007 |
| 7243727 | Isolation assembly for coiled tubing An isolation assembly for use with coiled tubing is described. The isolation assembly has a check valve for providing selective fluid communication through from the coiled tubing, through the isolation assembly, and into a downhole tool, such a straddle packer. The ... | 07/17/2007 |
| 7234520 | Well jet device for testing and studying formations and the operating method thereof The invention relates to jet devices and the operating methods thereof and can be used in order to produce and intensify the oil inflow from a well. The inventive device comprises a jet pump arranged on a tubing string in the well with a casing string. An active noz... | 06/26/2007 |
| 7231978 | Chemical injection well completion apparatus and method An apparatus to be disposed within a wellbore includes a production tubing in communication with a pump string and a bypass string at its distal end, wherein the pump string is configured to pump a wellbore fluid to a surface location through the production tubing, ... | 06/19/2007 |
| 7228914 | Interventionless reservoir control systems Systems and methods for positively closing off a section of wellbore and, thereby providing reservoir control. Systems and methods are described for selectively closing off a section of a wellbore to fluid communication. The wellbore completion section may then be r... | 06/12/2007 |
| 7216720 | Multi-string production packer and method of using the same A production packer comprising a packer body, a flat plate, a sealing element, production tubing, water overflow tubing, gas vent tubing, pump cable pack-off tubing, and an optional pressure transducer port. The flat plate is welded onto the top of the packer body. ... | 05/15/2007 |
| 7207381 | Downhole pump driven by injection water A method and apparatus for improving the performance of production-injection wells whereby a pump (35), driven by a hydraulic turbine (32) sharing the same central shaft (33, 34), is run and set in an oil-producing well. The oil enters the annul... | 04/24/2007 |
| 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 |
| 7172028 | Reciprocating slickline pump A reciprocating hydraulic slickline pump for use in a wellbore. The pump comprises a pump member. The pump member is reciprocated axially by slickline in order to form an upstroke and downstroke. The pump is configured such that it pressurizes fluid within a workstr... | 02/06/2007 |
| 7163066 | Gravity valve for a downhole tool A gravity valve for a downhole tool for use in a subterranean well and a method of use thereof. The gravity valve is adapted to control the flow of a dowuhole fluid through the downhole tool. The gravity valve typically includes a plunger and a seat. The plunger may... | 01/16/2007 |
| 7152683 | Method for operating a well jet device during cleaning of the downhole area of a formation and device for carrying out said method The invention relates to pumping engineering, mainly to well pumping devices for extracting oil from wells. The inventive method consists in assembling from the bottom upward an input cone provided with a shank, a packer and a jet pump and in running said assembly w... | 12/26/2006 |
| 7140447 | Subsurface annular safety barrier A subsurface annular safety barrier including a tubing disposed within a wellbore casing forming a casing-tubing annulus to allow fluid flow from and/or to a subterranean formation, and an annular barrier carried by the tubing and positioned in the casing-tubing ann... | 11/28/2006 |
| 7134488 | Isolation assembly for coiled tubing An isolation assembly for use with coiled tubing is described. The isolation assembly has a check valve for providing selective fluid communication through from the coiled tubing, through the isolation assembly, and into a downhole tool, such a straddle packer. The ... | 11/14/2006 |
| 7121344 | Plug installation system for deep water subsea wells A plug retrieval and installation tool is used with a subsea well having a production tree, a tubing hanger, a passage that extends vertically through the tubing hanger and the tree, and a plug located within a plug profile in the passage within the tubing hanger. T... | 10/17/2006 |
| 7114558 | Filtered actuator port for hydraulically actuated downhole tools Methods of using and making and apparatuses utilizing a filtered actuator port for hydraulically actuated down hole tools. The filtered port prevents sand or other debris from entering the actuator workings of a tool. In accordance with one aspect of the invention, ... | 10/03/2006 |
| 7108065 | Technique for preventing deposition products from impeding the motion of a movable component A technique for preventing mineral, mineral salt and other deposits from impeding the motion of movable components in a submerged environment. The technique allows for a movable component in a submerged environment to move freely beneath a deformable member. As the ... | 09/19/2006 |
| 7093652 | Plunger with multiple jackets A plunger for use in tubulars in wells which produce fluids and/or gases under variable pressure. The plunger has at least two separate jackets comprised of segments mounted about one body or bodies joined by a connector, which collectively have increased sealing, h... | 08/22/2006 |
| 7093341 | Method of making an axial piston pump barrel with a cast high pressure collection cavity In an axial piston pump, a plurality of reciprocating pistons are at least partially positioned within a barrel. The barrel includes a ring shaped high pressure collection cavity that is positioned between the piston chambers and the outlet of the pump. In order to ... | 08/22/2006 |
| 7090011 | Method for operating a well jet device during repair and insulating operations and device for carrying out said method The inventive method consists in the following: a drillable packer provided with a channel closed by a back valve is arranged in a well; afterwards a tubing string carrying a jet pump and a stinger is run into said well, the stringer being connected to the packer; t... | 08/15/2006 |
| 7066248 | Bottom discharge seal section Disclosed is an electric submersible pumping system for use in wellbore. The electric submersible pumping system includes a motor assembly, a pump assembly and a seal section disposed in the wellbore. The pump assembly is below the motor and is driven by the motor. ... | 06/27/2006 |
| 7059412 | Technique for preventing deposition products from impeding the motion of a movable component A technique for preventing mineral, mineral salt and other deposits from impeding the motion of movable components in a submerged environment. The technique allows for a movable component in a submerged environment to move freely beneath a deformable member. As the ... | 06/13/2006 |
| 7055595 | Electrical submersible pump actuated packer A centrifugal pump assembly for a well is lowered into the well on a string of tubing. A packer mounts to the pump assembly below an intake of the pump and is lowered in with the pump assembly. The packer is radially expansible to seal against the casing in the well... | 06/06/2006 |
| 7056060 | Apparatus and method for remediation of low permeability formations An apparatus and method for treating contaminated groundwater in low permeability ground formations is provided having a groundwater intake region at the bottom of the well and a groundwater expulsion region above the bottom of the well and a means for moving the wa... | 06/06/2006 |
| 7048045 | Gas lift apparatus for a well In a flowing gas well having concentric production casing and tubing strings: a funnel is mounted to the bottom end of the tubing string; a packer divides the annulus into upper and lower portions; | 05/23/2006 |
| 7048514 | Downhole jet unit for testing and completing wells The invention relates to pumping engineering, mainly to downhole jet production units. The inventive downhole jet unit comprises a packer, a pipe column and a jet pump. An active nozzle and a mixing chamber are axially arranged in the body of the jet pump, and a pas... | 05/23/2006 |
| 7048066 | Downhole sealing tools and method of use A downhole tool apparatus for insertion into and sealing engagement with a wellbore. The downhole tool includes upper and lower casing engaging members and an intervening sealing member. In one aspect the intervening sealing member may be a deformable material. In a... | 05/23/2006 |
