Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8051907 | Downhole separator The desander (10) for positioning downhole includes a generally tubular desander body (16) and a generally sleeve-shaped vortex body (39, 94). The desander with a seal or packer may be positioned in a well below the casing perforations. The desa... | 11/08/2011 |
| 7909092 | Downhole separator The desander (10) for positioning downhole includes a generally tubular desander body (16) and a generally sleeve-shaped vortex body (39, 94). The desander with a seal or packer may be positioned in a well below the casing perforations. The desa... | 03/22/2011 |
| 7703508 | Wellbore filter for submersible motor-driver pump A technique utilizes a well filter with a submersible motor-driven pump. The system comprises an elongated filter housing in which a cylindrical filtering element is installed. A fixture is provided for fastening the elongated filter housing to the pump. The filter ... | 04/27/2010 |
| 7404702 | Debris evacuation apparatus and method for an oil pump A debris evacuation apparatus and method evacuates debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus has at least one seal and one groove located south of the seal, with the seal blocking northward travel of debris... | 07/29/2008 |
| 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 |
| 7314089 | Method of wellbore pumping apparatus with improved temperature performance and method of use Oil is recovered from a borehole using a pump having limited high temperature breakdown resistance. The pump is located in a borehole having a cooling zone, in which the temperature of the well fluid is reduced to, or below, the temperature at which the temperature ... | 01/01/2008 |
| 7296622 | Labyrinth seal for pumping system A seal section for a downhole pumping system includes a fluid exchange pathway and a rotatable gravity separator. The rotatable gravity separator preferably includes a chamber, a backwash inlet connecting the chamber to the fluid exchange pathway and a backwash outl... | 11/20/2007 |
| 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 |
| 7270181 | Downhole surge pressure reduction and filtering apparatus The present invention provides a downhole cementing apparatus run into a borehole on a tubular. The apparatus is constructed on the pipe in such a way that pressure surge during run-in is reduced by allowing fluid to enter the pipe and utilize the fluid pathway of t... | 09/18/2007 |
| 7155967 | Formation testing apparatus and method A method and apparatus for testing formations surrounding an earth borehole. The method includes the following steps: providing a tool movable through the borehole; providing a flow line in the tool; establishing fluid communication between the formations and the fl... | 01/02/2007 |
| 7144549 | Biocide impregnation of coatings for ESP components An electric submersible pump has one or more components coated with a biocide-incorporated coating for the purpose of controlling the activity of bacteria. The portions exposed to well fluid are coated for inhibiting bacteria from growing. Both centrifugal and progr... | 12/05/2006 |
| 7143826 | Method for determining sand free production rate and simultaneously completing a borehole The current invention provides methods for determining the sand production rate from unconsolidated and poorly consolidated subterranean formations under varying drawdown pressures. The current invention also allows for immediate production of fluid from the subterr... | 12/05/2006 |
| 7080686 | Devices and methods for extraction, transportation and/or release of material Provided are methods and apparatuses for extracting, transporting and/or releasing various kinds of liquid and semi-liquid materials. The materials may have very high viscosity and may include solids. Generally speaking, the apparatus includes a container, a gateway... | 07/25/2006 |
| 7066255 | Protection against loss of downhole tools A method of protecting against loss of downhole tools in wells, the method comprising the steps of making repeated use of a wire rope to suspend downhole tools in wells, the downhole tools being suspended from a downhole end of the wire rope, testing the integrity o... | 06/27/2006 |
| 7051815 | Well pump capsule In the well assembly of the invention, a downhole pump assembly has an intake and a discharge outlet. A capsule enclosing the pump assembly selectively isolates the pump assembly from well fluid by way of a flow control device. A conduit having open upper and lower ... | 05/30/2006 |
| 7017663 | System for producing de-watered oil System for producing de-watered oil from an underground formation to the surface, which system comprises a reception well having a substantially horizontal or inclined section for primary oil/water separation of the well fluid; a water discharge system having an ups... | 03/28/2006 |
| 7008197 | Debris evacuation apparatus and method for an oil pump A debris evacuation apparatus and method evacuates debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus has at least one seal and one groove located south of the seal, with the seal blocking northward travel of debris... | 03/07/2006 |
| 6959764 | Baffle system for two-phase annular flow An apparatus for promoting the flow of methane gas from a coal bed methane well. The apparatus may include a well casing extending into the earth to a cool seam aquifer. A conduit may be placed within the well and extend from the coal seam aquifer to the earth's sur... | 11/01/2005 |
| 6901999 | Swabbing tool for wells A swabbing tool for wells that filters particulates from fluids passing through the swabbing tool. The swabbing tool comprises a mandrel, at least one swab cup on the mandrel, the mandrel and swab cup being arranged to allow fluids to pass from below to above the sw... | 06/07/2005 |
| 6719050 | Method and apparatus for removing solid material from a well using a rotary pump A tool for removing solid particles from a well after sand fracturing, drilling, etc. The tool includes a flapper valve assembly above a drill bit, a sand screen, and a screw pump. Fluid in the well, with the solid particles therein, is pumped into the tool by rotat... | 04/13/2004 |
| 6698521 | System and method for removing solid particulates from a pumped wellbore fluid A system for removing solid particulates from a production fluid. The system includes a solid separator to remove the solid particulates from the production fluid to reduce pump component wear. The system is disposed in a wellbore such that wellbore fluid... | 03/02/2004 |
| 6619390 | Particle separator for a fluid pump intake A particle separator for a fluid pump has a cylindrical body which is attachable to a pump by a flexible sleeve and has tangential slots directing intake fluid in swirling manner about an inlet tube within the cylindrical body. The inlet has an enlarged o... | 09/16/2003 |
| 6533033 | Pump protection system Embodiments of a pump protection system are disclosed which may be used to enclose, protect, and improve the efficiency of a submersible pump. The pump protection system of the instant invention prevents unwanted materials from clogging the pump intake po... | 03/18/2003 |
| 6394183 | System and method for removing solid particulates from a pumped wellbore fluid A system for removing solid particulates from a production fluid. The system includes a solid separator to remove the solid particulates from the production fluid to reduce pump component wear. The system is disposed in a wellbore such that wellbore fluid... | 05/28/2002 |
| 6330915 | Protection of downwell pumps from sand entrained in pumped fluids A system for separating particulates from a liquid prior to pumping of the liquid. The system is amenable to use, for example, in a wellbore environment for separating sand or other particulate matter from a production fluid. The system uses a sand separa... | 12/18/2001 |
| 6277286 | Method and device for the separation of a fluid in a well A method and device for separating a fluid from a formation into several fluid components in a well is disclosed. The method and device include feeding the fluid into a mainly horizontal section of pipe located in a down-hole, mainly horizontal section of... | 08/21/2001 |
| 6216788 | Sand protection system for electrical submersible pump A method and apparatus for removing sand, which has been separated from well fluids, from a well bore. A separator is provided to separate sand from well fluids before the well fluids enter an electrical submersible pump (ESP). A bypass tube is connected ... | 04/17/2001 |
| 6213208 | Three component separation in an oil well A method of separating oil, water and sand in a production fluid. The production fluid is fed through a downhole liquid/liquid hydrocyclone (9). An oil enriched stream from the hydrocyclone (9) is pumped to the surface, while an oil depleted stream is fed... | 04/10/2001 |
| 6167960 | Protection of downwell pumps from sand entrained in pumped fluids A separation system for protecting a pump disposed in a well. The separation system separates sand from the well fluid prior to pumping of the well fluid. The separated sand, or other particulates is routed past the pump used in producing the desired well... | 01/02/2001 |
| 6158512 | Method and apparatus for the removal of sand in an underwater well A sand removing apparatus which is intended to be used in the lower area of underwater wells and is suspended from the end of a pipe string, includes a container having a closeable inlet for allowing a flow of liquid accompanied by sand thereinto. The con... | 12/12/2000 |
| 6152218 | Apparatus for reducing the production of particulate material in a subterranean well The present invention is directed to an apparatus for reducing the production of sand and other mineral particles within the production fluids of a subterranean wells. The apparatus includes a tubular conduit having openings therein which are protected by... | 11/28/2000 |
| 6145590 | Device for removing sand from pump plungers A sand removal apparatus for use with an oil pumping apparatus in which a first sand remover is attached between a valve rod and a plunger of the oil pumping apparatus and a second sand remover is attached to a bottom of the plunger within the working bar... | 11/14/2000 |
| 6059030 | Sand recovery unit A sand recovery unit for removing sand and other clogging debris from a producing well formation including a cylinder tube component housing an interior filter located across an intake; a DC motor coupled to a pumping mechanism having an intake covered by... | 05/09/2000 |
| 5662167 | Oil production and desanding method and apparatus A method and apparatus for desanding oil produced from a subterranean oil-bearing formation through a wellbore, the method comprising: flowing oil from the oil-bearing formation upwardly through a first tubing at a velocity sufficient to carry sand entrai... | 09/02/1997 |
| 5553669 | Particulate separator for fluid production wells An improved particulate separator is made from a strainer mandrel disposed in a velocity tube. The velocity tube and strainer mandrel are hollow and tubularly shaped and positioned concentrically such that a small radial distance is left open between the ... | 09/10/1996 |
| 5411088 | Filter with gas separator for electric setting tool The filter of the present invention overcomes the aforementioned problems by separating gas and solid particulate matter from liquid as the wellbore fluid passes through the filter. The apparatus comprises a solid tube encased in a perforated tube which e... | 05/02/1995 |
| 5314018 | Apparatus and method for separating solid particles from liquids Apparatus and method for separating solid particles from well fluids in the bore hole including a separator or separation device (34) adjacent the lower end of a tubing string (14) positioned within a perforated casing (10). The separator device (34) incl... | 05/24/1994 |
| 5295537 | Sand separating, producing-well accessory A sand separator is used in a well from which particulate bearing liquids are extracted into tubing for transport up the tubing. The separator causes the fluid bearing particulate matter to be accelerated. This acceleration in turn causes the particulate ... | 03/22/1994 |
| 5095976 | Tubing sand pump A sand pump for an oil well includes a tail pipe connected to a barrel. A swab on a mandrel is reciprocatingly operated within the barrel to draw fluid upward from the bottom of the tail pipe. A flap valve at the bottom of the tail pipe and a ball check v... | 03/17/1992 |
| 5030032 | Apparatus for producing water seal in protective tube of the submersed pump of gas cistern The present invention concerns an apparatus for producing a water seal in a protective tube (16) of a submersed pump (15) of a gas cistern (10), on the lower end thereof being a bend (16a) or a tubular structure (16c) enabling the producing of a water sea... | 07/09/1991 |
