Gas Lift Valves For Wells Patents (Class 137/155)
  • Patent number: 9689241
    Abstract: A gas lift valve assembly includes a housing, a check valve, and a fluid flow barrier. The housing defines an inlet port, an outlet port, and a main flow passage providing fluid communication between the inlet port and the outlet port. The main flow passage has an upstream end and a downstream end. The check valve includes a sealing element disposed at the downstream end of the main flow passage, and a valve member configured to sealingly engage the sealing element. The valve member is movable between an open position in which fluid flow is permitted in a downstream direction, and a closed position in which the valve member inhibits fluid flow in an upstream direction. The fluid flow barrier is disposed within the main flow passage, and is configured to direct fluid flow away from the sealing element when the valve member is in the open position.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: June 27, 2017
    Assignee: General Electric Company
    Inventors: Shourya Prakash Otta, Norman Arnold Turnquist, Roderick Mark Lusted, Xuele Qi
  • Patent number: 9670739
    Abstract: A gas lift valve system for a wellbore within a subterranean formation can include a power source that generates power, and a delivery system disposed within the wellbore and electrically coupled to the power source, where the delivery system delivers the power generated by the power source. The system can also include at least one gas lift valve assembly disposed within the wellbore and electrically coupled to the delivery system, where the at least one gas lift valve assembly receives the power from the delivery system, where at least one valve, when in a position other than a fully closed position, allows a control medium to flow from an inlet channel to an outlet channel, where the outlet channel empties into the cavity of the delivery system.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 6, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Luis Phillipe Costa Ferreira Tosi, Melvin Clark Thompson, Heath Evan Lynch
  • Patent number: 9581000
    Abstract: A pressure compensating system that minimizes the pressure differences across multiple shaft seals in a rod driven downhole pumping apparatus. The system balances the pressures across the seals by forcing the external pressure of all seals and compensators to be equal to the highest external pressure in the apparatus, made possible by the appropriate use of labyrinth-type seals. A bleed valve assembly which allows free flow of fluid into the pressure compensating system, but restricts the rate of fluid outflow from the system in case of shut-in of the pump, to limit the potential of rapid opening and closing of the mechanical shaft seals.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: February 28, 2017
    Assignee: HARRIER TECHNOLOGIES, INC.
    Inventor: William Bruce Morrow
  • Patent number: 9551214
    Abstract: A method for determining the complex response of a permeable stratum at the bottom of a producing well, the well comprising a well head fitted with an outlet valve and the bottom of the well comprising a height-adjustable pressure and flow rate sensor, comprising the following steps: periodically altering the degree to which the outlet valve is open, and, while the alteration is in progress: —measuring the pressure and flow rate in the well at the top/bottom of the stratum for a certain number of periods of alteration, after a certain delay; and —measuring the pressure and the flow rate in the well at the bottom/top of the stratum for a certain number of periods of alteration, immediately after the positioning of the sensor.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: January 24, 2017
    Inventor: Damien Despax
  • Patent number: 9534604
    Abstract: A manifold trailer and pairing system are disclosed. The pairing system has a non-transitory computer readable medium storing processor executable code. The processor executable code causes a processor to receive identification data indicative of a first low pressure valve and a second low pressure valve connected to a low pressure manifold of a manifold trailer; receive identification data indicative of a first high pressure valve and a second high pressure valve connected to a high pressure manifold of the manifold trailer; and receive identification data indicative of a plurality of pumps. The processor determines a first association indicative of a first fluid connection between the first low pressure valve and a selected pump and a second association indicative of a second fluid connection between the selected pump and a selected high pressure valve. The processor populates the non-transitory computer readable medium with information indicative of the first and second associations.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 3, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Miguel Lopez, Marcos Suguru Kajita, Christopher Shen, William Troy Huey, Sarmad Adnan
  • Patent number: 9519292
    Abstract: A valve assembly for high pressure applications includes a pre-charge chamber, at least one inlet for pressurized gas to enter the assembly, a system poppet and an outlet for releasing pressurized gas into a desired environment. Pressurized gas can flow through access channels into a single bellows, which expands to move a shaft connected to the system poppet to open the poppet. In another embodiment, the pre-charge chamber compresses a first bellows to expand a second bellows, and vice versa upon reciprocation. The two bellows are hydraulically connected and filled with incompressible fluid. Each bellows has an internal limiting valve to retain incompressible fluid therewithin, and to preclude the complete nesting of either of the bellows. The retained fluid within the bellows maintains an internal pressure to minimize differential pressure, thereby minimizing the risk of bellows failure.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 13, 2016
    Assignee: Senior IP GmbH
    Inventors: Robert M Thorne, Peter A Jordan, Patrick B Reed
  • Patent number: 9518674
    Abstract: A valve assembly for high pressure applications includes a pre-charge chamber in fluid communication with a first bellows, at least one inlet for pressurized gas to enter the assembly, a system poppet and an outlet for releasing pressurized gas into a desired environment. The pre-charge chamber and first bellows are filled with pre-charge gas to a threshold pressure. Pressurized gas can flow through access channels into a second bellows, which expands to move a valve shaft connected to the poppet assembly to open the poppet and allow the release of gas. The expansion of the second bellows pushes incompressible fluid disposed between the two bellows against the first bellows, thus contracting the first bellows. The gas within each bellows maintains an internal pressure equal to the pressure exerted upon each bellows by the incompressible fluid, so as to minimize differential pressure across the bellows in the extended position.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: December 13, 2016
    Assignee: Senior IP GmbH
    Inventors: Patrick B. Reed, Robert M. Thorne, Peter A. Jordan
  • Patent number: 9518456
    Abstract: A coiled tubing gas injection mandrel includes a housing assembly capable of attachment to coiled tubing, wherein the housing assembly comprises an up-hole end, a down-hole end, a sleeve longitudinally integrally connected with the up-hole end and the down-hole end, and a slide-through valve receptacle assembly removably connected within the sleeve. In more detail, the slide-through valve receptacle assembly comprises an up-hole pipe with a shoulder, at least one laterally extending projection, at least one laterally extending port, a down-hole pipe integrally connected with the up-hole pipe, and a longitudinal bore within the up-hole pipe and down-hole pipe. The up-hole end and down-hole end are capable of attachment with coiled tubing. The slide-through valve assembly and the sleeve form a gas flow passageway, wherein the gas flow passageway controls the flow of gas through a gas lift valve installed in the slide-through valve receptacle for gas being injected into the coiled tubing.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: December 13, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Ganesh Balasubramanian, Yazid Mohamed Bashir, Bjorn Staale Varnes
  • Patent number: 9453398
    Abstract: A self-stabilizing gas lift valve apparatus for oil and gas production. The apparatus includes a valve body having at least one gas inlet in communication with an elongated gas chamber in the valve body. An impingement disk is moveable in the elongated gas chamber. A conical plug extends from the impingement disk with the conical plug having a valve plug extending axially therefrom. A conical cup terminates in a valve seat wherein the conical cup receives the conical plug therein. A valve closure force mechanism urges the valve plug toward the valve seat. Gas injected through the gas inlet provides a force upon the impingement disk to overcome the force of the valve closure force mechanism in order to open the valve plug. When the gas injected exceeds a predetermined force, the impingent disk is moved and a conical space between the conical plug and the conical cup is reduced.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: September 27, 2016
    Assignee: The University of Tulsa
    Inventors: Hong-Quan Zhang, Jose Luis Arellano
  • Patent number: 9371728
    Abstract: The techniques herein relate to a pressure compensation system for a sensor in a wellbore having a wellbore fluid therein. The system includes a downhole tool (104) and at least one pressure compensator (112) positionable therein. The pressure compensator includes a first compensating fluid section having a first compensating fluid (238) therein, a first pressure compensation section having a first pressure regulation device (226) for adjusting a compensation pressure of the first compensating fluid based on a wellbore pressure of the wellbore fluid, at least one second compensating fluid section having a second compensating fluid (252) therein, and at least one second pressure compensation section having a second pressure regulation device (246) for adjusting a sensor pressure of the second compensating fluid based on the compensation pressure of the first compensating fluid.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: June 21, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Gregoire Jacob, Alain Nguyen-Thuyet
  • Patent number: 9267354
    Abstract: A fluid injection device (38) for deployment in a well-bore to control injection of fluid into an oil reservoir, wherein the well-bore has an outer pipe (16) and an inner tube (14) which extends within the outer pipe and is connected at one end to a pressurized fluid supply above the ground. The device includes a control valve arrangement comprising: an inlet (42) for receiving the fluid from the inner tube; an outlet (56) for outputting the fluid outside the inner tube; an inlet valve (44) in a fluid path between the inlet and the outlet; and an actuator (50) associated with the inlet valve which is controllable to switch the inlet valve between its open and closed configurations, such that when the inlet valve is open, the fluid flows from the inner tube, via the inlet, fluid path and outlet to outside the inner tube. A method of controlling injection of fluid into an oil reservoir from a well-bore using such a device is also provided.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: February 23, 2016
    Assignee: Camcon Oil Limited
    Inventor: Peter Watson
  • Patent number: 9267363
    Abstract: The present invention relates to a downhole artificial lifting system for introducing fluid into a production casing from an annulus arranged outside the production casing. The production casing has an axial extension and a casing wall with a wall thickness, and the system comprises the production casing which at a first part is surrounded by an intermediate casing creating the annulus which is downwardly closed, and a fluid delivering means pumping fluid into the annulus. The invention also relates to a tool for use in the system and a method.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: February 23, 2016
    Assignee: WELLTEC A/S
    Inventors: Jørgen Hallundbæk, Paul Hazel
  • Patent number: 9010353
    Abstract: A gas lift apparatus has a gas lift valve that disposes in a mandrel. A housing of the valve has a chamber, and a seat disposes between the inlet and outlet. A piston movably disposed in the housing has one end exposed to the chamber. A distal end can selectively seal with the seat to close the valve. A first edge-welded bellows disposed on the piston separates the inlet and chamber pressures and can fully compress to a stacked height when the distal end of the piston seals with the seat. A dynamic seal can be achieved at closing by using a captive sliding seal between the piston's distal end and the seat. A second edge-welded bellows can also be disposed on the piston, and the two bellows can operate in tandem. Oil filing the interiors and the passage can move from one bellows to the other to transfer the pressure differential between the inlet and the chamber pressures. The second bellows fully compresses to a stacked height and stops opening of the valve.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: April 21, 2015
    Assignee: Weatherford Technology Holdings, LLC
    Inventor: Zlatko Salihbegovic
  • Patent number: 8800590
    Abstract: In one embodiment, a valve comprising a valve body; an orifice disposed within the valve body; a fluid flow restraining member located at a first location of the orifice, the fluid flow restraining member pivotable between a closed position and an open position; an extending member connected to, and moveable in pivotable synchronization with, the fluid flow restraining member; and a shape memory alloy element attached to the extending member and the valve body, the shape memory alloy element causing a pivotal movement of the extending member between positions corresponding to the open and closed positions responsive to a change in temperature of the shape memory alloy element.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: August 12, 2014
    Assignees: Massachusetts Institute of Technology, Chevron U.S.A. Inc.
    Inventors: Eric Wright Gilbertson, Franz Hover, Eduardo Colina, Donald Bryan Freeman
  • Patent number: 8695622
    Abstract: A ball within a ball valve comprises a ball, an interior fluid passage extending through the ball, a first flow passage disposed in the ball that allows fluid communication between an exterior fluid and the interior fluid passage, a second flow passage disposed in the ball that extends through a wall of the ball to the interior fluid passage, where the first flow passage and the second flow passage are on opposite hemispheres of the ball, and a flow through device. The flow through device comprises a plug disposed in the second flow passage and configured to sealingly engage the ball, and a shear device configured to engage the plug and retain the plug in the second flow passage.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: April 15, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Peter Derek Walter Inglis, Katherine Ann Davies
  • Publication number: 20130312833
    Abstract: A valve for performing gas lift operations is provided that incorporates two edge-welded bellows and a ball-orifice closing mechanism. The gas lift valve incorporates features enabling enhanced compression of one of the bellows, beyond an initial closure point of the valve. For example, a stem with the sealing ball is divided into two components, wherein one of the stem components is configured to continue moving in relation to the other stem component with the ball, which is fixed in position when the ball seals the orifice and initially closes the valve. This continued movement allows one of the bellows to be fully compressed in the ultimately closed valve position, thereby protecting the bellows from high pressures and potential failure that could occur to bellows in a partially compressed state.
    Type: Application
    Filed: May 22, 2013
    Publication date: November 28, 2013
    Applicant: WEATHERFORD/LAMB, INC.
    Inventor: Zlatko X. Salihbegovic
  • Publication number: 20120186662
    Abstract: The present invention relates to the design of a nozzle valve (GL) for gas lifting that can be used in place of conventional orifice valves (VO). The gas lift nozzle valve (GL) according to the present invention has a body (1) with admission orifices (2), and, immediately below these, a slight recess (3) in the internal diameter of the body where a convergent nozzle (4) is fitted to regulate the gas flow passing through the inside of the nozzle valve (GL) towards the outlet (5) of the latter.
    Type: Application
    Filed: May 13, 2010
    Publication date: July 26, 2012
    Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventor: Alcino Resende De Almeida
  • Patent number: 8162060
    Abstract: A gas-lift valve comprising an elongated vertically orientated tubular body with inlet ports positioned for communication with the inlet ports of a gas-lift valve mandrel, a valve seat and valve port at the upper end of the valve body, a movable gas charged dome positioned within the body below the valve seat, a valve ball assembly attached to the dome, and a collapsible bellows positioned to move the dome and manipulate the valve ball assembly downward onto and off of the valve seat in response to pressure from said inlet ports of the valve body and pressure on the seat and thereby allow injection gas to flow upward through the valve port to exit at the upper end of the valve body. A tubular latch is provided with a removable plug to provide for pressure testing and completion of the well with only one wireline trip.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: April 24, 2012
    Assignee: Eagle Gas Lift, LLC.
    Inventor: Vic Arthur Randazzo
  • Publication number: 20110180267
    Abstract: A flow control device is provided that in one embodiment includes a flow-through region configured to receive formation fluid at an inflow region and discharge the received fluid at an outflow region and a setting device configured to adjust the flow of the fluid through the flow-through region to a selected level. The setting device includes a coupling member configured to be coupled to an external latching device adapted to move the coupling member to cause the setting device to alter the flow of the fluid from the flow-through region to the selected level.
    Type: Application
    Filed: January 25, 2010
    Publication date: July 28, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Samuel L. Wildman, James H. Kritzler, Paul W. Atkins, Raymond D. Chavers, Stephen Bisset
  • Publication number: 20110132593
    Abstract: The present invention relates to a system, apparatus, and method provided to selectively produce petroleum fluid from multiple production zones well. The apparatus comprises a casing running downwardly into the well and a tubing string running in the casing. The upper and lower sealing mechanisms are provided for sealing the annular space between the casing and the tubing string, therefore, dividing the well into upper and lower production zones. Moreover, the invention comprises a bypass gaslift system provided with a tubular member, tubing string, connecting means and side pocket mandrels for injecting lifting gas into the multiple production zones well. The system and apparatus according to this invention can selectively operate to simultaneously or separately produce petroleum fluid from vertical apart multiple zones well.
    Type: Application
    Filed: December 9, 2009
    Publication date: June 9, 2011
    Applicant: PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY LTD.
    Inventors: Pramote Phloi-montri, Chatchai Kongdachudomkul, Thanawee Kreethapon, Pattana Pittrapan, Suwin Sompopsart, Wararit Toempromraj, Amnuay Prayadsup
  • Patent number: 7882832
    Abstract: Various embodiments of a fluid displacement system are disclosed. The system may include a reservoir containing a fluid in a liquid state and a first chamber hydraulically connected to the reservoir to receive the fluid from the reservoir. The first chamber may be configured to receive solar energy and configured to convert the received solar energy to vaporize the fluid. The system may also include a second chamber hydraulically connected to the first chamber to receive the vaporized fluid from the first chamber. The second chamber may be configured to condense the vaporized fluid, causing depressurization in the second chamber. The system may also include a hydraulic connection between the second chamber and a source of fluid to be displaced. The system may be configured such that the depressurization of the second chamber may cause fluid in the source of fluid to be displaced through the hydraulic connection.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: February 8, 2011
    Inventor: Claudio Filippone
  • Patent number: 7669659
    Abstract: A system for prevention of hydrate formation has a manifold, a production piping communicating with the manifold, a chemical injection line positioned in heat exchange relationship along the production piping, and a fluid delivery system connected to the chemical injection line for passing a heated fluid through at least a portion of the chemical injection line. The chemical injection line has a first portion affixed to a surface of the production piping and a second portion extending outwardly therefrom. The fluid delivery system is in communication with the second portion of the chemical injection line. The chemical injection line extends in a U-shaped pattern or in a spiral pattern around an outer surface of the production piping.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: March 2, 2010
    Inventor: Mario R. Lugo
  • Patent number: 7658229
    Abstract: The present invention is directed to producing fluid from an oil or gas well by means of a combination intermittently filled down hole chamber accumulation device and a connected upper continuous gas lift flow system, separated by an inline one-way reverse flow check valve. A two-way purge and vent valve controls the distribution of high pressure gas. The two-way valve first injects high pressure gas into the chamber accumulation device to displace the fluid from the chamber into the continuous flow conduit. The two-way valve then vents the residual high pressure gas from the chamber into a separate low pressure conduit to the surface. The valve also provides high pressure gas to the continuous flow conduit to assist in the production of the fluid.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: February 9, 2010
    Assignee: BST Lift Systems, LLC
    Inventors: Billy G. Becker, David A. Tucker
  • Patent number: 7428929
    Abstract: A downhole apparatus and method for maintaining or reducing the level of liquids at the bottom of a gas producing well is described including a constriction or throat section, such as a Venturi, in which a production gas flow from the well is used to generate a low pressure zone having a pressure less that the ambient formation gas pressure and at least one conduit providing a flow path from an liquids at the bottom of said well to said low pressure zone. The conduit may be adaptable in length to provide for maintaining the flow path as the level of the liquids changes.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: September 30, 2008
    Assignee: Schlumberger Technology Corporation
    Inventors: John Sherwood, Ian Atkinson, Barry Nicholson
  • Publication number: 20080149187
    Abstract: The present invention provides for a pilot valve used in a well and in which the state of the pilot valve is controlled by an actuator.
    Type: Application
    Filed: March 7, 2008
    Publication date: June 26, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Murat Ocalan
  • Patent number: 7370706
    Abstract: A unique gas lift valve bellows assembly in which an internal piston incorporated within the bellows provides over travel prevention and over pressure protection during valve operation, independent of the set or operating gas pressures exerted on the gas lift valve. The piston separates a hydraulic damping reservoir in the interior convolutions of the bellows from the upper gas volume chamber. The piston travels a pre-set distance between two stops to provide a fluid dampened hydraulic balance across the bellows convolutions in both the open and closed positions of the valve. This results in a long lived bellows valve that can operate with any pressure up to the limits of the material, without overstressing the bellows.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: May 13, 2008
    Inventors: Billy G. Becker, David A. Tucker
  • Patent number: 7278489
    Abstract: Gas turbine driven oil lifting device for increasing the quantity of oil obtained over a specified time (e.g. barrels per day) and the percentage of total amount obtained from oil-bearing geological deposits. The device is installed in a technical column (1) and consists of sections (12) and (18), separated by a bypass packer (11), on which a gas turbine (9) is fixed by a coupling (14) and a tubing (17) with a plurality of valves (four preferred: (3), (4), (6), and (8)) that are fixed to the gas turbine (9) by a coupling (15). Above the gas turbine (9) is a check valve (16) that is installed within the tubing (17). Parallel with the tubing (17) is a supply tube (2) of the gas turbine that is fixed by at least one coupling. The bottom end of the supply tube (2) is connected to an opening (20) at an upper head (34) of the gas turbine (9) by a flexible hose (7). The device may operate continually and periodically.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: October 9, 2007
    Inventor: Juraj Matic
  • Patent number: 7213607
    Abstract: The present invention relates to a mandrel for a gas lift valve which comprises an elongated body provided with means of connection at its ends. The body is provided with a side pocket (17) and a side receptacle (16) in the interior of which may be housed a gas lift valve (13) which injects gas into the interior of the body of the mandrel for the gas lift valve (15) by means of orifices (22) positioned in a nose (18). The mandrel for the gas lift valve (15) comprises additionally a lower body (23) provided on the lower part of the valve receptacle (16) of the mandrel of the side pocket (15) in that the lower body (23) is configured in a manner to seal the lower part of the valve receptacle (16) to form a chamber (24) and the lower body is provided with at least one injection orifice to inject gas into the interior of the body of the mandrel of the gas lift valve (15).
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: May 8, 2007
    Assignee: Petroleo Brasileiro S.A. Petrobras
    Inventor: Alcino Resende De Almeida
  • Patent number: 7210532
    Abstract: A downhole apparatus and method for maintaining or reducing the level of liquids at the bottom of a gas producing well is described including a constriction or throat section, such as a Venturi, in which a production gas flow from the well is used to generate a low pressure zone having a pressure less that the ambient formation gas pressure and at least one conduit providing a flow path from an up-stream location within said well to said low pressure zone. The conduit may have additional opening for production gas to enter the conduit.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: May 1, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: John Sherwood, Ian Atkinson, Barry Nicholson
  • Patent number: 7104330
    Abstract: This invention relates to a marine riser tower (112, 114) for use in the production of hydrocarbons from offshore wells. The riser tower (112, 114) includes a plurality of fluid conduits, which may comprise production flow lines (P), gas-lift lines (G), water injection lines (W) and/or umbilicals (U). The conduits are supported in a single structure, and at least one of said conduits is provided with its own insulation within said structure.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: September 12, 2006
    Assignee: Stolt Offshore S.A.
    Inventors: Jean-Luc Bernard Legras, Grégoire François Christian De Roux, Tegwen Bertrand Marie Miorcec De Kerdanet
  • Patent number: 6932581
    Abstract: A gas lift valve that is usable with a subterranean well includes a housing, a valve stem and at least one bellows. The housing has a port that is in communication with a first fluid, and the valve stem is responsive to the first fluid to establish a predefined threshold to open the valve. The bellow(s) form a seal between the valve stem and the housing. The bellow(s) are subject to a force that is exerted by the first fluid; and a second fluid contained in the bellow(s) opposes the force that is exerted by the first fluid.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: August 23, 2005
    Assignee: Schlumberger Technology Corporation
    Inventor: Tyson R. Messick
  • Patent number: 6827146
    Abstract: The phase of this process is done by the functionality of the perforated lower stem, which due to the fact that its internal conduit is able to connect the lower bellow in an alternated way, first to the tubing and after, to the casing. This is possible due to the fact that it is assisted by: a) a window that communicates the casing with the tubing when the lower bellow is open, and b) sealing packing installed in the lower stem to isolate the casing pressure, in order that the lower bellow can register only the tubing pressure when it is in closing position.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: December 7, 2004
    Inventor: Jean Louis Faustinelli
  • Patent number: 6810955
    Abstract: 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 the same outside diameter as if the end caps were welded on, without sacrificing any inside diameter in the small ends of the end caps, compared to a welded mandrel.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: November 2, 2004
    Assignee: Baker Hughes Incorporated
    Inventors: Brian A. Roth, Roger D. Hegdahl, James H. Kritzler
  • Publication number: 20040182437
    Abstract: A gas lift valve that is usable with a subterranean well includes a housing, a valve stem and at least one bellows. The housing has a port that is in communication with a first fluid, and the valve stem is responsive to the first fluid to establish a predefined threshold to open the valve. The bellow(s) form a seal between the valve stem and the housing. The bellow(s) are subject to a force that is exerted by the first fluid; and a second fluid contained in the bellow(s) opposes the force that is exerted by the first fluid.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 23, 2004
    Inventor: Tyson R. Messick
  • Patent number: 6715550
    Abstract: A gas-lift well having a controllable gas-lift valve is provided. The well uses the tubing and casing to communicate with and power the controllable valve from the surface. Induction chokes at the surface and downhole electrically isolate the tubing from the casing. A high band-width, adaptable communication system is used to communicate between the controllable valve and the surface. Additional sensors, such as pressure, temperature, and acoustic sensors, may be provided downhole to more accurately assess downhole conditions. The controllable valve is varied opened or closed, depending on downhole conditions, oil production, gas usage and availability, to optimize production and assist in unloading. While conventional, bellows-type, gas-lift valves frequently fail and leak—often undetected—the controllable valve hereof permits known precise operation and concomitant control of the gas-lift well.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: April 6, 2004
    Assignee: Shell Oil Company
    Inventors: Harold J. Vinegar, Robert Rex Burnett, William Mountjoy Savage, Fred Gordon Carl, Jr.
  • Publication number: 20040020532
    Abstract: In a servo controller 3a, it is confirmed whether or not the voltages from amplifiers G1 through G3 are within the range of normal performance in the comparators 32a through 32c after alternating current voltages generated individually in a primary coil 22a and secondary coils 23a and 24a of an LVDT 2a are converted into direct current voltages and output from the amplifiers G1 though G3. When a voltage out of the range of normal performance is confirmed in at least one of the comparators 32a through 32c and a high voltage is output, the servo controller 3a is brought into a stand-by state.
    Type: Application
    Filed: March 24, 2003
    Publication date: February 5, 2004
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Tanaka, Hideaki Emoto
  • Publication number: 20030164240
    Abstract: A gas-lift well having a controllable gas-lift valve is provided. The well uses the tubing and casing to communicate with and power the controllable valve from the surface. Induction chokes at the surface and downhole electrically isolate the tubing from the casing. A high band-width, adaptable communication system is used to communicate between the controllable valve and the surface. Additional sensors, such as pressure, temperature, and acoustic sensors, may be provided downhole to more accurately assess downhole conditions. The controllable valve is varied opened or closed, depending on downhole conditions, oil production, gas usage and availability, to optimize production and assist in unloading. While conventional, bellows-type, gas-lift valves frequently fail and leak—often undetected—the controllable valve hereof permits known precise operation and concomitant control of the gas-lift well.
    Type: Application
    Filed: January 24, 2001
    Publication date: September 4, 2003
    Inventors: Harold J. Vinegar, Robert Rex Burnett, William Mountjoy Savage, Fred Gordon Carl
  • Patent number: 6568473
    Abstract: The present invention relates to a gas lift valve for use in an oil well producing by means of gas lift, said gas lift valve making use of a central body venturi for both controlling the flow of the injection gas from the annulus between the tubing and the casing of the oil well, and precluding a reverse flow of fluids from said oil well towards said annulus to occur.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: May 27, 2003
    Assignee: Petroleo Brasileiro S.A. -Petrobras
    Inventor: Alcino Resende de Almeida
  • Publication number: 20020139534
    Abstract: The present invention provides an improved cross-over housing for a gas lift valve. In the present invention, the series of radial apertures, or jets, typically utilized within the cross-over housing of a production pressure operated gas lift valve are removed. In their place, a substantially continuous through opening is employed, having an area somewhat greater than the area of the pressure chamber seat. This avoids the occurrence of sonic flow, or critical flow, within the jets of the prior art which hampered the ability of the pressure chamber valve to close. The new configuration for the cross-over housing allows the bellows within the pressure chamber to sense the decrease in production fluid pressure, or tubing pressure, as gas is injected, allowing the pressure chamber valve to be reseated.
    Type: Application
    Filed: March 9, 2001
    Publication date: October 3, 2002
    Applicant: Weatherford/Lamb
    Inventor: James H. Holt
  • Patent number: 6305402
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. Methods of actuating the valve include electro-hydraulic, hydraulic, and pneumo-hydraulic, while sensors relay the position of the variable orifice and critical fluid pressures to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: October 23, 2001
    Assignee: Camco International Inc.
    Inventor: Ronald E. Pringle
  • Publication number: 20010025651
    Abstract: Invention is of an improvement to seat of gate valves used for gas-lift producing oil wells, consisting of a seat lower part of which is curved there being a straight vertical art and a sloping straight lower part, central spacing consisting of a first part in the shape of a tapered nozzle at which gas is gradually speeded up, a second part which is the main restriction to flow, and a third part in the shape of a conical diffuser at which gas is gradually slowed down.
    Type: Application
    Filed: May 20, 1997
    Publication date: October 4, 2001
    Applicant: Petroleo Brasileiro S.A. - PETROBRAS
    Inventor: Alcino R. Almeida
  • Publication number: 20010017157
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. Methods of actuating the valve include electro-hydraulic, hydraulic, and pneumo-hydraulic, while sensors relay the position of the variable orifice and critical fluid pressures to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
    Type: Application
    Filed: April 7, 2000
    Publication date: August 30, 2001
    Inventor: Ronald E. Pringle
  • Patent number: 6231312
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. Methods of actuating the valve include electro-hydraulic, hydraulic, and pneumo-hydraulic, while sensors relay the position of the variable orifice and critical fluid pressures to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: May 15, 2001
    Assignee: Camco International, Inc.
    Inventor: Ronald E. Pringle
  • Patent number: 6206645
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. Methods of actuating the valve include electro-hydraulic, hydraulic, and pneumo-hydraulic, while sensors relay the position of the variable orifice and critical fluid pressures to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: March 27, 2001
    Assignee: Schlumberger Technology Corporation
    Inventor: Ronald E. Pringle
  • Patent number: 6148843
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. The valve can be actuated by an electro-mechanical actuating assembly while sensors can relay the position of the variable orifice to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: November 21, 2000
    Assignee: Camco International Inc.
    Inventor: Ronald E. Pringle
  • Patent number: 6070608
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. Methods of actuating the valve include electro-hydraulic, hydraulic, and pneumo-hydraulic, while sensors relay the position of the variable orifice and critical fluid pressures to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: June 6, 2000
    Assignee: Camco International Inc.
    Inventor: Ronald E. Pringle
  • Patent number: 6068015
    Abstract: The present invention is an apparatus for orienting a first device in a first pocket in a mandrel relative to a second device in a second pocket in the mandrel, the first and second pockets being substantially parallel to one another, comprising: a first guide rail and a second guide rail, the first and second guide rails being on an inner surface of the mandrel and spaced apart in substantially parallel relationship to define a longitudinal groove therebetween; the first device having an orienting key and a first reference point, the orienting key and the first reference point being longitudinally aligned; the second device having a second reference point; and, the first and second reference points being longitudinally aligned when the orienting key is disposed within the longitudinal groove between the guide rails.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: May 30, 2000
    Assignee: Camco International Inc.
    Inventor: Ronald E. Pringle
  • Patent number: 5979553
    Abstract: A method and apparatus for completing and backside pressure testing petroleum product wells for production, with one or more differential pressure valves being present at spaced intervals within a tubing string and with a well fluid transfer device being located in the tubing string. Either after or preferably before well casing perforation, after setting of the tubing string, casing pressure is elevated to a backside test pressure, above differential pressure causing closure of the differential pressure responsive valves to ensure the integrity of seals and packers. Casing pressure is then increased to a transfer valve opening pressure, above backside test pressure, to open unidirectional flow communication of well fluid from the well casing to the production tubing.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: November 9, 1999
    Assignees: Altec, Inc., Donald J. Brink
    Inventor: Donald J. Brink
  • Patent number: 5971004
    Abstract: The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve and actuating assembly for sealable insertion in a mandrel. The valve has a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. The valve may be actuated using momentary bursts of hydraulic pressure to the actuating assembly. Variable orifice opening settings are achieved by providing successive bursts of hydraulic pressure to the actuating assembly, which cause a cylindrical cam within the actuating assembly to be indexed between multiple support positions. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from the mandrel by either wireline or coiled tubing intervention methods.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: October 26, 1999
    Assignee: Camco International Inc.
    Inventor: Ronald E. Pringle
  • Patent number: RE36566
    Abstract: A spoolable, flexible sidepocket mandrel positioned in a coiled tubing having an orienting sleeve, a sidepocket, and a deflector guide in which the pocket includes a plurality of separate pocket parts and the guide includes a plurality of separate guide parts, all secured to the inside of a housing for allowing the mandrel to be longitudinally flexible and spoolable. A retrievable longitudinally flexible, spoolable gas lift valve is adapted to be inserted into and retrieved from the sidepocket. The gas lift valve may be of various types including an adjustable flow gas lift valve.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: February 15, 2000
    Assignee: Camco International Inc.
    Inventor: Ronald E. Pringle