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| Number | Title | Issue Date |
| 7828056 | Method and apparatus for connecting shunt tubes to sand screen assemblies Method and apparatus are disclosed for connecting internal shunt tubes to tubular end components of a sand screen assembly by coupling each end of each shunt tube to ports formed in the tubular end components in an annular space between a base pipe and a filter medi... | 11/09/2010 |
| 7793716 | Apparatus and methods for limiting debris flow back into an underground base pipe of an injection well In some embodiments, apparatus for assisting in reducing flowback of debris from an earthen formation into an underground fluid injection system includes a screen member disposed around and longitudinally moveable relative to a base pipe and shielded from direct con... | 09/14/2010 |
| 7721801 | Conveyance device and method of use in gravel pack operation The present invention provides for a conveyance device to bypass regions within a wellbore that may disrupt the desired distribution of gravel in a gravel pack. ... | 05/25/2010 |
| 7588079 | Well screen A well screen (10) is proposed having an outer standoff layer (14) between the protective screen (15) and the filter medium (13). A method of making the well screen (10) is also proposed, comprising a step of pulling an open-ended ... | 09/15/2009 |
| 7438131 | Expandable injector pipe An expandable injector pipe has openings and a cover sleeve preferably secured at opposed ends with offset openings. Expansion of the base pipe causes the cover sleeve to expand while keeping the openings in the cover sleeve misaligned with the openings in the base ... | 10/21/2008 |
| 7431081 | Device for removal and filtration of drilling fluid The invention relates to a device for removal and filtration of drilling fluid at top hole drilling, where a suction module (10) comprises an extended, pipe-formed body (30), open at the top and which is arranged to an ocean-bottom penetrating pipe, th... | 10/07/2008 |
| 7407372 | Progressing cavity pump or motor A progressing cavity pump or a motor includes, in one embodiment, an outer tube 12, an inner tube 14, and a plurality of apertures 16. A pair of annular seal glands 18 seal the stator material to the outer tube. The stator material is inj... | 08/05/2008 |
| 7329106 | Stator for an eccentric screw pump or an eccentric worm motor operating on the moineau principle The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for ac... | 02/12/2008 |
| 7316548 | Stator for an eccentric screw pump or an eccentric worm motor operating on the Moineau principle The invention relates to a stator for an eccentric screw pump or an eccentric worm motor having a stator, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space, in the shape of a double or multiple spiral, ... | 01/08/2008 |
| 7287684 | Filter cartridge assembly and method of manufacture An apparatus for filtering well fluids and method of manufacture is disclosed. The apparatus comprises an inner support, a filter spirally wrapped around the inner support, and an outer support wrapped around the filter enclosing the filter between the inner and out... | 10/30/2007 |
| 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 |
| 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 |
| 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 |
| 7249525 | Apparatus for measuring parameters of a fluid in a lined pipe An apparatus for measuring a parameter of a fluid passing through a pipe comprises a spatial array of pressure sensors disposed at different axial locations along the pipe between a sleeve within the pipe and an inside surface of the pipe. Each of the pressure senso... | 07/31/2007 |
| 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 |
| 7213642 | Multi-fluid sparging A diffuser useful for sparging to remove contaminant in situ is described. The diffuser includes a first elongated member having a sidewall with a first portion of the length of the sidewall being microporous, and a second portion of the length of the sidewall havin... | 05/08/2007 |
| 7210535 | Isolation system comprising a plug and a circulation valve and method of use An isolation system for an oil and gas well is described wherein the system comprises an isolation section and a first isolation device integral with the section and a second isolation device sealingly engaged to the section. The first isolation device may be a pres... | 05/01/2007 |
| 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 |
| 7198109 | Double-pin radial flow valve A valve with the following components: a pipe; an inner sub connected to the pipe; an outer sub connected to the pipe, wherein the inner and outer subs are concentric and define a sub annulus; a conduit between the sub annulus and an inside diameter of the inner sub... | 04/03/2007 |
| 7188687 | Downhole filter A downhole filter comprises a tubular member having a wall defining a plurality of openings. The openings have an outer width less than an inner width. The parts of the opening defining the smaller width are defined by radially outer parts of the openings, such that... | 03/13/2007 |
| 7168485 | Expandable systems that facilitate desired fluid flow An expandable device, such as a sand screen, is used in a wellbore. The expandable device comprises an expandable base pipe and a filter layer that facilitates expansion of the device while maintaining filtering capability. ... | 01/30/2007 |
| 7152678 | System and method for downhole operation using pressure activated valve and sliding sleeve An isolation system for producing oil and gas from one or more formation zones and methods of use are provided comprising one or more pressure activated valve and one or more tool shiftable valve. The tool shiftable valve may be actuated before or after actuation of... | 12/26/2006 |
| 7131827 | Stator for an eccentric screw pump or an eccentric worm motor operating on the moineau principle The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for ac... | 11/07/2006 |
| 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 |
| 7108060 | Fracturing different levels within a completion interval of a well Method and apparatus for fracturing different levels of a completion interval in a well. A workstring lowers a fracturing string which, in turn, is comprised of a base pipe which is blank except for perforated sections spaced along its length. Screen may be provided... | 09/19/2006 |
| 7108062 | Expandable well screen An expandable well screen provides increased collapse, torsional and tensile strength. In a described embodiment, an expandable well screen includes a generally tubular base pipe and an external filtering media. The well screen is configured to have sufficient torsi... | 09/19/2006 |
| 7100691 | Methods and apparatus for completing wells Improved methods and apparatus for completing a subterranean zone penetrated by a wellbore are provided. The improved methods basically comprise the steps of placing a sand control screen (e.g., screens, screened pipes, perforated liners, prepacked screens, etc.) an... | 09/05/2006 |
| 7100690 | Gravel packing apparatus having an integrated sensor and method for use of same A gravel packing apparatus (310) has an outer tubular (312) having a plurality of openings (314) therethrough and a sand control screen assembly (318) disposed within the outer tubular (312). The sand control screen assembly (31... | 09/05/2006 |
| 7096945 | Sand control screen assembly and treatment method using the same A sand control screen assembly (200) positionable within a production interval of a wellbore that traverses a subterranean hydrocarbon bearing formation comprises a base pipe (202) having openings (204) in a sidewall section thereof that allow f... | 08/29/2006 |
| 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 |
| 7077196 | Expandable downhole tubular and method of use There is disclosed, in one embodiment of the invention an expandable downhole tubular (10) comprising an expandable inner support tube (14) an expandable outer tube (18); and a filter tube (22) located between said inner support tube (... | 07/18/2006 |
| 7073601 | Profiled encapsulation for use with instrumented expandable tubular completions The present invention provides an encapsulation for housing instrumentation lines, control lines, or instruments downhole. In one use, the encapsulation resides between an expandable downhole tool, such as an expandable sand screen, and the wall of the well bore. Th... | 07/11/2006 |
| 7059401 | Flow control apparatus for use in a wellbore An apparatus and method of controlling the flow of hydrocarbons into and/or out of a string of tubing disposed in a wellbore. In one embodiment, the apparatus comprises a tubular member having at least one aperture formed in a wall thereof and a sleeve disposed radi... | 06/13/2006 |
| 7055598 | Fluid flow control device and method for use of same A fluid flow control device (60) for use in a wellbore to control the inflow of production fluids comprises a sand control screen (62) having a base pipe (64) with a first set of openings (66) that allows the production fluids to flow the... | 06/06/2006 |
| 7048063 | Profiled recess for instrumented expandable components The present invention provides a recess within an expandable downhole tubular, such as an expandable sand screen. The recess resides within the wall, such as the outer shroud of an expandable sand screen. The recess serves as a housing for instrumentation lines, fib... | 05/23/2006 |
| 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 |
| 7036577 | Underground water pumping device A groundwater pumping apparatus includes an outer tube, an inner tube, a shield member, a vacuum unit and a pump unit. The outer tube is buried in ground, and has a water-passing portion at its lower part. The inner tube has a substantially same length as the outer ... | 05/02/2006 |
| 7032665 | System and method for gravel packaging a well Systems and methods for gravel packing which provide a mechanism for a gravel slurry to bypass bridges which may form in the well intervals being packed. In one embodiment, a plurality of short, independent bypass flow paths are provided along the length of a well s... | 04/25/2006 |
| 7021374 | Method and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars, said apparatus comprising a winch (15), at least one wire line (4, 5), and a device (2) for gripping the tubular (3), the arrangement being such that, in use, the winch (15)... | 04/04/2006 |
