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| Number | Title | Issue Date |
| 8100176 | Device for removing liquids from the well-bore of a gas producing well A device for liquid removal from a drilled hole equipped for gas production from an underground accumulation, under the conditions in which a downward liquid film flow on the tubing string wall occurs, the device comprising a long lower inner liner (4) whose ... | 01/24/2012 |
| 7377313 | Gas separator fluid crossover for well pump A submersible pump gas separator for a well pump has a housing with a rotatable shaft. A separating section in the housing separates heavier well fluid components into an area radially outward from the lighter components. A crossover member rotates with the shaft. T... | 05/27/2008 |
| 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 |
| 7204314 | Fluid removal from gas wells A method of removing produced fluid from a well producing both gas and liquid comprises utilising produced gas flowing from a formation to power a produced liquid pump. The produced liquid from the pump and the produced gas are carried towards surface in separate fl... | 04/17/2007 |
| 7059180 | Water cut rate of change analytic method A method of measuring a water effect on an underground non-water well includes the steps of assembling a history of water cut (WC) measurements for the well over an extended period of time, determining a water cut rate of change (R) for the well based upon the histo... | 06/13/2006 |
| 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 |
| 7048046 | High temperature mechanical seal Preferred embodiments of the present invention provide a submersible pumping system for pumping wellbore fluids. The submersible pumping system includes a rotatable shaft and a mechanical seal that substantially surrounds the shaft. The mechanical seal prevents the ... | 05/23/2006 |
| 6948917 | Valving system for a downhole hydraulically actuated pump An engine for actuating a hydraulic downhole pump having a piston vertically reciprocated in a cylinder includes a reversing valve carried with the power piston and serving, when in a first position, to direct fluid flow to force the piston upwardly and in a second ... | 09/27/2005 |
| 6929064 | Downhole pump There is disclosed an improved pump (5, 5′) particularly suitable for use in a method of “artificial lift” in an oil/gas well. Known pumps used in artificial lift methods suffer from a number of problems/disadvantages—e.g. low efficiency (hydraulic ef... | 08/16/2005 |
| 6644400 | Backwash oil and gas production An apparatus and process for recovering oil and gas from a subterranean formation wherein the production rate is controlled by the gas pressure at the well head, resulting in very slow strokes or pulses and bubbles of lift gas up to 500 feet long. An appa... | 11/11/2003 |
| 6564865 | Oil and gas production with downhole separation and reinjection of gas A system for producing a mixed gas-oil stream which contains solid particulates wherein gas is to be separated and compressed downhole in a turbine-driven compressor before the gas is injected into a subterranean formation. The stream is passed through an... | 05/20/2003 |
| 6543534 | Downhole jet pump A wellsite pumping system, comprising a gas processing system including a source of compressed gas, the source of compressed gas having a low pressure inlet and a high pressure outlet, coil tubing connected to the high pressure outlet of the gas processin... | 04/08/2003 |
| 6520259 | Method and apparatus for fluid entrainment The present invention presents an improved method and apparatus for liquid entrainment by a two-phase flow system. The present invention provides an apparatus that recovers liquids by entrainment without experiencing deadhead conditions, choking or dry re... | 02/18/2003 |
| 6357530 | System and method of utilizing an electric submergible pumping system in the production of high gas to liquid ratio fluids 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 fl... | 03/19/2002 |
| 5988275 | Method and system for separating and injecting gas and water in a wellbore A method and system for increasing oil production from an oil well producing a mixture of oil, water, and gas through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone, an aqueous zone, and a gas zone by separating from the mi... | 11/23/1999 |
| 5857519 | Downhole disposal of well produced water using pressurized gas A method and apparatus for the downhole disposal of the water component of production fluid while using gas lift techniques to lift the hydrocarbon component to the surface is disclosed. Separation of the hydrocarbon component and the water component take... | 01/12/1999 |
| 5755288 | Downhole gas compressor A gas compressor is employed downhole in a well for pressurizing formation gas. The gas compressor is driven by a downhole electrical motor. The downhole assembly also includes a pump. The pump might be located below the motor and driven by the same motor... | 05/26/1998 |
| 5651664 | "Free" coil tubing downhole jet pump apparatus and method A hydraulic pump apparatus (35) for a well assembly (36) including a rigid, elongated tubular casing (37). extending into a formation producing production fluid. The hydraulic pump apparatus (35) including an elongated tube (40) and a bottom-hole assembly... | 07/29/1997 |
| 5605193 | Downhole gas compressor A gas compressor is employed downhole in a well for pressurizing formation gas. The gas compressor is driven by a downhole electrical motor. The downhole assembly also includes a pump. The pump might be located below the motor and driven by the same motor... | 02/25/1997 |
| 5494102 | Downhole hydraulically operated fluid pump A downhole hydraulically operated pump having a power piston reciprocated by alternating pressurized hydraulic fluid flow controlled at the surface by a hydraulic power control system which quickly reverses the flow direction. The pump housing, suspended ... | 02/27/1996 |
| 5207810 | Submersible well pump gas separator A gas separator for a submersible centrifugal pump for a well separates gas from liquid components of the well fluid. The gas separator has a rotatably driven rotor. The rotor has an outer cylinder, an inner hub and a longitudinal vane that extends betwee... | 05/04/1993 |
| 4589482 | Well production system A well production system in which a submersible pump is utilized in producing the well and gas produced by the well is bypassed through a packer with a special control valve which is constructed and arranged to permit ready passage of sound waves through ... | 05/20/1986 |
