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| Number | Title | Issue Date |
| 7819194 | Flow regulator for use in a subterranean well A flow regulator for use in a subterranean well. A well flow regulating system includes a flow regulator for regulating a flow rate of a fluid in a wellbore, the flow rate remaining substantially constant while a differential pressure across the flow regulator varie... | 10/26/2010 |
| 7559375 | Flow control device for choking inflowing fluids in a well A flow arrangement (10, 12) for use in a well through one or more underground reservoirs, and where the arrangement (10, 12) is designed to throttle radially inflowing reservoir fluids produced through an inflow portion of the production tubing in the ... | 07/14/2009 |
| 7434626 | Deep set safety valve Apparatus and methods are provided for actuation of downhole tools. In one example, a deep set safety valve uses a magnetic coupling which permits a portion of the safety valve at control line pressure to be isolated from tubing string internal pressure, without req... | 10/14/2008 |
| 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 |
| 7428924 | System and method for completing a subterranean well A technique is provided for completing a subterranean wellbore. A wellbore completion combines a distributed sensing system, such as a distributed temperature sensing system, with at least one flow control valve and a pumping system. The flow control valve is contro... | 09/30/2008 |
| 7373991 | Swellable elastomer-based apparatus, oilfield elements comprising same, and methods of using same in oilfield applications Oilfield apparatus and methods of use, the apparatus comprising an elastomeric composition comprising the reaction product of a linear or branched polymer having residual ethylenic unsaturation with an ethylenically unsaturated organic monomer having at least one re... | 05/20/2008 |
| 7363980 | Downhole flow control apparatus, operable via surface applied pressure Flow control apparatus, for placement in a downhole location in the tubing string of a well. The apparatus comprises a valve element and a lock element. Application and removal of annulus pressure (on the annulus between the tubing and the casing) permits the appara... | 04/29/2008 |
| 7347945 | Method and an installation for separating out multiphase effluents The invention relates to a method and to an installation for separating out an effluent made up of a multi-phase fluid mixture. According to the invention, said installation includes gravity separator means whose geometrical separation characteristics can be adjuste... | 03/25/2008 |
| 7258323 | Variable radial flow rate control system A variable radial flow rate control valve including a body forming a bore along the longitudinal axis thereof for transporting a fluid through the body, a fixed choke member fixedly positioned about the bore, the fixed choke member forming a fixed aperture, a rotati... | 08/21/2007 |
| 7219742 | Method and apparatus to complete a well having tubing inserted through a valve A method and apparatus for inserting a small diameter continuous hydraulic conduit or capillary tube down a well bore is presented. The methods and apparatus allow either the injection of chemicals to enhance production of oil and gas, or to provide a conduit for pr... | 05/22/2007 |
| 7178600 | Apparatus and methods for utilizing a downhole deployment valve Methods and apparatus for utilizing a downhole deployment valve (DDV) to isolate a pressure in a portion of a bore are disclosed. Any combination of fail safe features may be used with or incorporated into the DDV such as redundant valve members, an upward opening f... | 02/20/2007 |
| 7137452 | Method of disabling and locking open a safety valve with releasable flow tube for flapper lockout A safety valve has a lock open feature that is actuated by expanding or penetrating the flow tube to disconnect the link between the piston in the hydraulic control system and the flow tube. In normal operation, downward movement of the piston moves the flow tube ag... | 11/21/2006 |
| 7137450 | Electric-hydraulic power unit The present invention is directed to an electric-hydraulic power unit. In one illustrative embodiment, the power unit comprises a body having a movable pressure barrier positioned therein, the movable pressure barrier defining first and second chambers therein, a co... | 11/21/2006 |
| 7096982 | Drill shoe A method and apparatus for a drilling with casing includes therewith a drill shoe configured for later drilling through thereof in situ, with cutters retainable thereon in response to the forces encountered during borehole drilling, yet moveable from the envelope th... | 08/29/2006 |
| 7086479 | Expanding well tools Methods of expanding well tools, which permit operation of the well tools after expansion, are provided. In a described example, a cementing tool includes a valve and a packer. After the cementing tool is expanded, the valve is selectively opened and closed, and the... | 08/08/2006 |
| 7082996 | Method and apparatus to complete a well having tubing inserted through a valve A method and apparatus for inserting a small diameter continuous hydraulic conduit or capillary tube down a well bore is presented. The methods and apparatus allow either the injection of chemicals to enhance production of oil and gas, or to provide a conduit for pr... | 08/01/2006 |
| 7004248 | High expansion non-elastomeric straddle tool The present invention involves a pack-off system for use in packing off an area of interest within a wellbore. The pack-off system comprises at least two packing elements disposed on a tubular body. The packing elements of the present invention comprise overlapping ... | 02/28/2006 |
| 6988547 | Method and system of fluid analysis and control in hydrocarbon well A control system for a hydrocarbon well is also disclosed. A control valve system is used to control the flow of fluid being produced by the well. A real time sensor is provided downhole and is used to make real time measurements of phase characteristics of the flui... | 01/24/2006 |
| 6966368 | Plug and expel flow control device Devices and methods for fluid flow control within a production tubing string wherein a temporary flow blockage is established and selectively removed from the tubing string so that pressure testing or operation of a hydraulic tool within the string may be performed.... | 11/22/2005 |
| 6951331 | Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve A sleeve valve for fluid flow between a hydrocarbon reservoir and a well includes a first sleeve and a second sleeve which are relatively movable between a first position in which at least one opening in the first sleeve is aligned or misaligned with at least one op... | 10/04/2005 |
| 6942038 | Mud diverter and method for horizontal drilling A drilling mud diverter and method of use for horizontal drilling operations wherein drilling muds are diverted to a single portal of the bore where the drilling muds are recovered for removal or reprocessing, the mud diverter having a diverter unit with a central c... | 09/13/2005 |
| 6899318 | Wave seal to resist extrusion during equalization The present invention provides for dynamic sealing in a flow control device. In an embodiment, the flow control device comprises a closure sleeve adapted to slide over the tubing hole. The closure sleeve has a front edge having a wave-like surface. One or more seals... | 05/31/2005 |
| 6892818 | Interchangeable choke assembly A pressure reducing apparatus and a method of operating a pressure reducing apparatus are provided. The apparatus is operable to reduce the pressure and flow rate of oil being discharged from a well head to downstream processing equipment. The device has central flo... | 05/17/2005 |
| 6883614 | Modular actuator system for valves and chokes The invention contemplates a simple coupling means for interfacing linear acting actuator shafts with valves or hydraulic chokes. The coupling means of the present invention allows either an actuator or an interconnected valve or choke to be rapidly, safely, and eff... | 04/26/2005 |
| 6880638 | Device for an opening in an outer sleeve of a sleeve valve and a method for the assembly of a sleeve valve A sleeve valve for fluid flow between a hydrocarbon reservoir and a well including a fixed outer sleeve with openings and a movable inner sleeve with openings which can be aligned and misaligned with the outer sleeve openings in order to admit or shut off the fluid ... | 04/19/2005 |
| 6877558 | Apparatus and method for locating joints in coiled tubing operations An apparatus and method is provided for locating joints in coiled tubing operations. The apparatus is adapted for running into a well on coiled tubing and for use during reverse circulating and fracturing operations. The apparatus having a central passageway for flu... | 04/12/2005 |
| 6868910 | Method and device for regulating the flow rate of formation fluids produced by an oil well The present invention relates to a method of regulating the flow rate of formation fluids produced from a determined zone of an underground well whose cased wall is provided with orifices through which said formation fluids can pass, said method consisting in applyi... | 03/22/2005 |
| 6866100 | Mechanically opened ball seat and expandable ball seat A method and apparatus for obstructing the passage of fluid within a fluid flow conduit and subsequently reconfiguring the tool to allow substantially full-bore passage therethrough. Pressure developed upstream of the obstruction can be utilized to operate pressure ... | 03/15/2005 |
| 6851560 | Drain element comprising a liner consisting of hollow rods for collecting in particular hydrocarbons The drain element for collecting hydrocarbons comprises a screen (TM) surrounding a suction cylinder (CA) extending in a longitudinal direction (AL). The screen is made up of rods (TT, TC) which extend along said longitudinal direction (AL) and which are regularly s... | 02/08/2005 |
| 6810955 | Gas lift mandrel A side-pocket gas lift mandrel having tapered end caps threaded onto the ends of the mandrel with metal-to-metal sealing threads. The thickness of each made up thread set is the same as the thickness of the small end of each end cap, resulting in a mandrel having th... | 11/02/2004 |
| 6688389 | Apparatus and method for locating joints in coiled tubing operations An apparatus and method is provided for locating joints in coiled tubing operations. The apparatus is adapted for running into a well on coiled tubing and for use during reverse circulating and fracturing operations. The apparatus having a central passage... | 02/10/2004 |
| 6679324 | Downhole device for controlling fluid flow in a well There is provided a downhole device for controlling the flow of fluids through an oil and/or gas production well comprises a deformable chamber which contains an electromagnetic field or other stimuli responsive gel and a fluid passage which is closed off... | 01/20/2004 |
| 6662869 | Ceramic components for high pressure oil wells A pressure reducing assembly for high pressure oil wells is disclosed. The assembly includes a metallic body having inlet and outlet channels that are lined with ceramic inserts. The assembly may also include a removable pressure reducing device that is p... | 12/16/2003 |
| 6626240 | Device for annular well isolation Device for annular isolation in oil/gas wells comprising a production tube, the production tube comprises coaxially positioned, cylindrical sleeve (5) having in one end an at least partially radially directed opening slot (2), said sleeve including a cyli... | 09/30/2003 |
| 6491102 | Downhole multiplexer and related methods In a broad aspect, the present invention is a downhole hydraulic multiplexer, which is comprised of one or more piloted shuttle valves, and method of using. The invention takes one or more input signals from a surface control panel or computer, said signa... | 12/10/2002 |
| 6478091 | Expandable liner and associated methods of regulating fluid flow in a well A method of regulating flow through a first tubular structure in a well provides flow control by use of an expandable second tubular structure inserted into the first tubular structure and deformed therein. In a described embodiment, a liner has sealing m... | 11/12/2002 |
| 6321845 | Apparatus for device using actuator having expandable contractable element An apparatus and method of operating devices (such as devices in a wellbore or other types of devices) utilizes actuators having expandable or contractable elements. Such expandable or contractable elements may include piezoelectric elements, magnetostric... | 11/27/2001 |
| 6253853 | Fluid injection tubing assembly and method An injection fluid tubing assembly for handling a flow of fluid [is taught. The assembly] includes tube having a port formed through its wall, a sliding sleeve valve retained within the tube and moveable between a closed position in which it blocks the po... | 07/03/2001 |
| 6112815 | Inflow regulation device for a production pipe for production of oil or gas from an oil and/or gas reservoir Inflow regulation device for a production pipe for production of oil or gas from an oil- and/or gas reservoir (9), where the production pipe comprises a lower drainage pipe with drainage pipe sections (5) with one or more drainage pipe elements (2; 2a, 2b... | 09/05/2000 |
| 5887657 | Pressure test method for permanent downhole wells and apparatus therefore A permanently installed, remotely monitored and controlled transient pressure test system is provided. This system utilizes shut-in/choke valves, pressure sensors and flow meters which are permanently associated with the completion string to perform trans... | 03/30/1999 |
