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| Number | Title | Issue Date |
| 8082986 | Filtering device, especially for use as a well screen filter The present invention relates to filtering device which is especially designed for use as a well screen filter. The filtering device comprises a tubular supporting element (12) and two or more tubular segments (14) of a porous filter medium arranged in... | 12/27/2011 |
| 7828055 | Apparatus and method for controlled deployment of shape-conforming materials An apparatus and method for filling a defined space, such as an annulus around a production tubular within a wellbore, includes a compliant porous material. The compliant porous material can be compressed and maintained in a compressed state by incorporation of a de... | 11/09/2010 |
| 7793715 | Rotary roller reamer The invention relates to a roller assembly for a rotary roller reamer. The roller assembly includes a roller pin and a crushing roller. The crushing roller is arranged to be mounted on the roller pin and to rotate thereabout. The roller assembly is connected togethe... | 09/14/2010 |
| 7735553 | Snap-lock bushing for prepacked screens A snap-lock bushing is provided for use with prepacked screens for monitoring wells. The bushing has an inner bore for sliding over a tubular well casing member and a raised lip protruding from the inner bore for engaging corresponding grooves at each end of the wel... | 06/15/2010 |
| 7673678 | Flow control device with a permeable membrane A system for use in a well includes plural flow control devices to control fluid flow in respective zones of the well, where each of at least some of the flow control devices includes a membrane having a permeable material to provide a flow restriction. The membrane... | 03/09/2010 |
| 7493947 | Water shut off method and apparatus A technique is provided to control flow in subterranean applications, such as hydrocarbon fluid production applications. The technique utilizes an material formed, at least in part, of material that swell in the presence of a specific substance or substances. The ma... | 02/24/2009 |
| 7431084 | Production of hydrogen from underground coal gasification A system of obtaining hydrogen from a coal seam by providing a production well that extends into the coal seam; positioning a conduit in the production well leaving an annulus between the conduit and the coal gasification production well, the conduit having a wall; ... | 10/07/2008 |
| 7413022 | Expandable flow control device The invention involves the use of a base pipe perforated only in a specific section under each screen section. Inflow comes through an outer shroud that is optional and goes through the screen material and into an annular space between the screen material and the un... | 08/19/2008 |
| 7367395 | Sand control completion having smart well capability and method for use of same A sand control completion (100) for installation in a wellbore (102) includes first and second packers (114, 116) that define a first zone (110) in the wellbore (102). A production tubing (120) extends substantially through ... | 05/06/2008 |
| 7316272 | Determining and tracking downhole particulate deposition Methods and apparatus provide for the characterization of injected fluid flow within a wellbore. Particular embodiments include injecting a slurry comprising a particulate material and a carrier fluid into an isolated wellbore annulus and acquiring composite density... | 01/08/2008 |
| 7301066 | Method of making and using nanoscale metal Methods of treating ground water and methods for reducing contaminants (e.g., chlorinated compounds in contaminated ground water) to harmless compounds in the presence of an elemental metal treatment composition. Said methods comprise injecting a treatment solution ... | 11/27/2007 |
| 7273106 | Surface flow controlled valve and screen An adjustable well screen assembly having a pipe which is connectable to a production pipe, wherein the pipe comprises a hole extending from the ID of the pipe to the OD of the pipe; a screen connected to the pipe adjacent the hole of the pipe; a valve connected to ... | 09/25/2007 |
| 7258166 | Wellbore screen A wellbore screen includes a base pipe including a wall, an inner bore surface and an outer surface, an opening formed through the base pipe wall and a filter cartridge mounted in the opening. In one aspect, the wellbore screen includes an impermeable layer relative... | 08/21/2007 |
| 7255133 | Fluid pressure system including free floating bladder A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o... | 08/14/2007 |
| 7243715 | Mesh screen apparatus and method of manufacture The present invention provides for a design and method of manufacture for a mesh-type screen to be used in subsurface well completions to prevent the production of sand. ... | 07/17/2007 |
| 7188058 | Method of load and failure prediction of downhole liners and wellbores A dynamic range relaxation algorithm is applied to simulate borehole failure under a variety of stress conditions. The borehole and its neighborhood are modeled by a number of regions by a plurality of interconnected nodes. The bonds between the nodes may be modeled... | 03/06/2007 |
| 7168486 | Apparatus comprising expandable bistable tubulars and methods for their use in wellbores A technique for connecting expandable tubulars. The technique comprises an expandable connector system that facilitates the connection of tubular components, such as tubulars used in wellbore environments. ... | 01/30/2007 |
| 7165633 | Drilling fluid filter A drilling fluid filter for placement within a bore wall of a tubular drill string component comprises a perforated receptacle with an open end and a closed end. A hanger for engagement with the bore wall is mounted at the open end of the perforated receptacle. A ma... | 01/23/2007 |
| 7151334 | Permanent magnet type rotor and method of manufacturing the rotor A permanent magnet type rotor comprises an inner member 2 having an outer ring portion 21; an approximately annular outer member 1 having soft magnetism and an inner circumference contacting with an outer circumference of the outer ring portion;... | 12/19/2006 |
| 7131494 | Screen and method having a partial screen wrap The present invention provides a screen for a well that utilizes a partial screen wrapping used to advantage with side conduits (e.g., alternate flowpaths), control lines, intelligent completions devices, and the like. It is emphasized that this abstract is provided... | 11/07/2006 |
| 7128152 | Method and apparatus to selectively reduce wellbore pressure during pumping operations A downhole tool has at least one diverter valve. The diverter valves are used to reduce pressure in a wellbore caused by frictional resistance to fluid flow during a gravel pack operation. The increased pressure tends to be created as the beta wave of a gravel pack ... | 10/31/2006 |
| 7128160 | Method and apparatus to selectively reduce wellbore pressure during pumping operations A downhole tool has at least one diverter valve. The at least one diverter valve is used to reduce pressure in a wellbore caused by frictional resistance to fluid flow during a gravel pack operation. The increased pressure tends to be created as the beta wave of the... | 10/31/2006 |
| 7104324 | Intelligent well system and method An intelligent well system and method has a sand face completion and a monitoring system to monitor application of a well operation. Various equipment and services may be used. In another aspect, the invention provides a monitoring system for determining placement o... | 09/12/2006 |
| 7100686 | Controlled-pressure drop liner The invention relates to a controlled-pressure drop liner device comprising a circumscribed filter element (9) centred on a base tube (1) by longitudinal braces in relation to the axis of the tube and arranged according to the diameter of the tube so a... | 09/05/2006 |
| 7093651 | Water pressure system with pressure tank installed within well casing of well A water pressure system includes a pressure tank installed underground within the well casing of a well. The water pressure system includes a submersible pump connected to the inlet of the pressure tank by a drop pipe. The outlet of the pressure tank is connected to... | 08/22/2006 |
| 7082998 | Systems and methods for placing a braided, tubular sleeve in a well bore Systems and methods for placing a tubular, braided sleeve in a well bore. The sleeve is positioned within an interior of a carrier configured to hold the sleeve in an undeployed position, followed by lowering the carrier into the well bore. The sleeve may be used in... | 08/01/2006 |
| 7066252 | Erosion resistant, self and/or artificial external cleaning solid exclusion system Disclosed is a tool having an axial passage, a top and a bottom, and a sidewall portion possessing porosity and permeability properties and constructed of a material having equal or better erosion properties than any substances produced and/or injected into any eart... | 06/27/2006 |
| 7059481 | Filter element A filter element (10) having a supporting body (11) around which a filter medium (12) is wound. The filter medium (12) is a weldable material and is sealingly affixed to the supporting body (11) two radial weld seams (18) an... | 06/13/2006 |
| 7048061 | Screen assembly with flow through connectors A connector for providing a pathway between a first screened tubing and a second screened tubing. In one embodiment, the connector includes an annular pipe coupled to the first screened tubing at a first end and coupled to the second screened tubing at a second end.... | 05/23/2006 |
| 7013924 | Fluid pressure system including free floating bladder A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o... | 03/21/2006 |
| 6978840 | Well screen assembly and system with controllable variable flow area and method of using same for oil well fluid production A well screen assembly (70) with a controllable variable flow area. The well screen assembly (70) comprises an outer tubular section (80), the outer tubular section (80) containing a first plurality of openings (90) disposed in a p... | 12/27/2005 |
| 6941652 | Methods of fabricating a thin-wall expandable well screen assembly An expandable well screen has a desirable thin-wall construction together with a simplified fabrication method. In fabricating the screen, a flexible sheet of metal mesh filter media is diffusion bonded to an inner side of a perforated metal sheet which is then defo... | 09/13/2005 |
| 6789624 | Apparatus and method for gravel packing an interval of a wellbore An apparatus and method for gravel packing an interval of a wellbore comprises an outer tubular (112), which forms a first annulus with the wellbore, and an sand control screen (118) disposed within the outer tubular (112) forming a second annul... | 09/14/2004 |
| 6779604 | Deformable gravel pack and method of forming A gravel pack is formed using a mixture of a solid deformable material and conventional gravel pack gravel. In the event of reservoir compaction, such a gravel pack will reduce the transmission of forces from the subterranean formation to the wellbore completion har... | 08/24/2004 |
| 6772836 | Expandable tubing and method An apparatus suitable for use in a wellbore comprises an expandable bistable device. An exemplary device has a plurality of bistable cells formed into a tubular shape. Each bistable cell comprises at least two elongated members that are connected to each other at th... | 08/10/2004 |
| 6763885 | Method of gravel packing for a gas storage and production system A gas storage and production system decreases production of formation sand and permits high gas flow rates in storing and producing operations. In a described embodiment, different flowpaths are used for injecting and withdrawing gas from a subterranean formation. I... | 07/20/2004 |
| 6752206 | Sand control method and apparatus The present invention discloses a system using a conduit run into a well on a service string. In one embodiment the conduit includes outlets along its length to permit a sand control treatment to exit the conduit along the length of the conduit and distribute the sa... | 06/22/2004 |
| 6675891 | Apparatus and method for gravel packing a horizontal open hole production interval An apparatus for gravel packing a production interval (42) of a wellbore (32) comprises first and second sand control screen assemblies (56, 58) connected downhole of a packer assembly (46) and a cross-over assembly (40) that provides a communication path... | 01/13/2004 |
| 6672385 | Combined liner and matrix system The invention relates to a system and a method for well completion, control and monitoring of processes in a reservoir. A combined prefabricated liner and matrix system (4) with defined properties for fast and simple well and/or reservoir completion, moni... | 01/06/2004 |
| 6668920 | Wellscreen having helical support surface A method and apparatus for assembling a wellscreen onto a perforated base pipe are provided. The wellscreen defines a tubular body which is suitable for subterranean use in oil, gas, and water wells. In accordance with the present invention, the wellscree... | 12/30/2003 |
