Having Sediment Trap Or Deflector Patents (Class 166/105.1)
  • Patent number: 9366127
    Abstract: An oil well gas separator that includes a seating nipple for a downhole pump. An inner and outer barrel define a fluid passage and a separation annulus with the well casing. A separated well liquid passage is directly connected to the pump inlet to reduce dissolution of gas from the separated liquid. An isolation means is provided to isolate the separation annulus from the well casing fluids.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: June 14, 2016
    Inventor: James N. McCoy
  • Patent number: 9175554
    Abstract: An artificial lift fluid system for use in a wellbore with a casing engaging a well head can include a prime mover in communication with a variable frequency drive controller, or connected with a throttle, sensors, and a programmable logic controller for optimizing production from the wellbore by comparing data with preset production parameters. The artificial lift fluid system can include upper bearings connected to the prime mover, and an on-off tool connected with a shaft. The shaft can be engaged with the upper bearings, prime mover, and the on-off tool. The on-off tool can be connected with the centrifugal pump. A seal can be engaged with the shaft, a bottom bearing can be connected with the centrifugal pump to support loads, and bushings can separate the on-off tool and shaft from tubing in the casing.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: November 3, 2015
    Inventor: Alvin Watson
  • Patent number: 8973662
    Abstract: A downhole tool for removing debris from a wellbore comprises a body having a bore, a collection member, and a means for creating a hydraulic barrier within a wellbore annulus. The hydraulic barrier within the wellbore annulus restricts upward movement of a debris laden fluid within the wellbore annulus causing the debris laden fluid to be directed toward the collection member. Thus, the hydraulic barrier facilitates removal of debris from the wellbore.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: March 10, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Yang Xu, Ying Qing Xu, Gregory L. Hern
  • Publication number: 20150053394
    Abstract: A well pump assembly includes rotary pump and a submersible motor. A shroud surrounds the pump intake and the motor. The shroud has an open upper end in fluid communication with the pump intake. A tubular member of smaller diameter is secured to and extends downward from a lower end of the shroud. The tubular member may have an open lower end for drawing well fluid along a lower flow path up the tubular member to the pump intake. An upper flow path at the upper end of the shroud may have a minimum flow area that is smaller than a minimum flow area of the lower flow path. The tubular member has a smaller outer diameter than an outer diameter of the shroud. The tubular member may have a closed lower end to define a debris collection chamber with a drain valve.
    Type: Application
    Filed: September 18, 2014
    Publication date: February 26, 2015
    Inventors: Leslie C. Reid, Jeffrey S. Bridges, Brent D. Storts
  • Patent number: 8960282
    Abstract: A subterranean debris catcher takes in debris laden fluid at a lower end. The inlet flow is induced with an eductor whose discharge goes around the housing to the lower end inlet for the debris. The eductor suction induces flow into the lower end of the housing as well. Incoming debris goes up an annular space around the collection receptacle and turns to pass through a bladed wheel that imparts a spin to the flowing stream. The flow direction reverses from up before the wheel to down through a tube after the wheel. The solids are flung to the tube periphery and the fluid reverses direction to go back up to a screen before reaching the eductor suction connection. The debris swirls down an open bottom tube and is collected in a housing surrounding the down tube.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: February 24, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Hong Zhu
  • Patent number: 8881803
    Abstract: A desander system for a wellbore for separating wellbore fluid from particulate. The system having a dip tube nipple, a dip tube, base tubing connecting around the dip tube having base tubing perforations, two collars affixed to the base tubing, two weld rings affixed to the base tubing, a screen jacket mounted over the base tubing perforations, and a Venturi centrifugal helical desander having a Venturi tube with a bore connected to the base tubing. The Venturi tube having a plurality of spiral fins configured to flow particulate around the tube and a desander tube connected to the Venturi tube for flowing wellbore fluid over the outside of the Venturi tube causing a vortex while simultaneously allowing particulate to fall out while simultaneously allowing cleaned fluid to flow up the bore.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: November 11, 2014
    Inventor: Cavin B. Frost
  • Publication number: 20140262206
    Abstract: A barrier assembly for use with a downhole pump includes a first tubular adapter; a second tubular adapter; a braided sleeve disposed between the first tubular adapter and the second tubular adapter, wherein the sleeve is configured to block passage of a particulate.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: Weatherford/Lamb, Inc.
    Inventors: Patrick David FERGUSON, Mark Gerald MILLER, John Edward STACHOWIAK, JR.
  • Publication number: 20140262326
    Abstract: The disclosure relates to purging a RCD including a bearing of contaminants with a fluid circuit, the fluid circuit having at least one housing adjacent to the RCD, a first plurality of valves within the bearing, a second plurality of valves within the housing, at least one inlet port located on the RCD, each inlet port being connected to the housing, at least one outlet port located on the RCD, each outlet port being connected to the housing, and a purge outlet in fluid communication with the fluid circuit.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: WEATHERFORD/LAMB, INC.
    Inventors: Kevin L. Gray, Thomas F. Bailey, James W. Chambers
  • Patent number: 8757257
    Abstract: The present invention relates to a crown-shaped separation device for separating oil and water in a well. Separator joints are sleeved on a central tube, and a separator is arranged between adjacent separator joints. Settlement cups are sleeved on the central tube, and two adjacent settlement cups are inserted together. A multi-rib separating bowl is embedded in the settlement cup. The settlement cup is crown shape. The bottom of the settlement cup is formed with multiple ribs. An angle is formed between the convex rib of the bottom of the settlement cup and the horizontal line. The top edge of the settlement cup is sawtooth shape corresponding to the shape of the cup bottom. An annular space is formed between the cup base of the settlement cup and the central tube. The central tube corresponding to the annular space is provided with a fluid inlet.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: June 24, 2014
    Assignees: PetroChina Company Limited, Daqing Oilfield Co., Ltd.
    Inventors: Yan Wang, Demin Wang, Rongjie Zhu, Long Ren, Rong Zhong, Hongyan Wang
  • Patent number: 8689878
    Abstract: A downhole tool for removing debris from fluid flowing through the downhole tool uses a screen member and wiper member, the wiper member having at least one window disposed through the inner and outer wall surfaces of the wiper member. Either the screen member or the wiper member is rotatable such that rotation of the screen member or the wiper member causes debris disposed on the outer wall surface of the screen member to fall-off the screen member. At least one directional port disposed at either the upper end of the screen member or the upper end of the wiper member causes rotation of the screen member or wiper member when fluid flows through the downhole tool.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: April 8, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Ying Qing Xu, Yang Xu
  • Publication number: 20130299181
    Abstract: A deliquification pump for deliquifying a well comprises a fluid end pump adapted to pump a fluid from a wellbore. In addition, the deliquification pump comprises a hydraulic pump adapted to drive the fluid end pump. The hydraulic pump includes a first internal pump chamber and a first pump assembly disposed in the first chamber. The first pump assembly includes a piston having a first end, a second end, and a throughbore extending between the first end and the second end. In addition, the first pump assembly includes a first wobble plate including a planar end face axially adjacent the second end of the piston and a slot extending axially through the first wobble plate. The first wobble plate is adapted to rotate about the central axis relative to the housing to axially reciprocate the piston and cyclically place the throughbore of the piston in fluid communication with the slot.
    Type: Application
    Filed: July 9, 2013
    Publication date: November 14, 2013
    Applicant: BP Corporation North America, Inc.
    Inventors: Robert A. Coyle, William Michel, Louis-Claude Porel, Alistair Gill, Paul Ellerton, David Fielding
  • Patent number: 8561813
    Abstract: A cyclonic debris evacuation apparatus and method for removing debris in a pumping system. The apparatus includes a valve rod, a cyclone component, cup component, ring component, and ring coupler component. The cup component is composed of a high density poly-fiber material that helps in creating a positive seal between the cup component and barrel interior during pumping operations, helping to direct solids into the cup component and thereby preventing them from travelling southward in the direction of the barrel and causing damage. The cup component can include a specialized leading edge adapted to direct solids into the cup component. The apparatus can include a carbide ring that prevents solids from traveling further down onto the pump plunger section. The carbide ring can incorporate ports that feed into a main channel flow. The apparatus can include a top plunger adapter capable of connecting with a sucker rod.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: October 22, 2013
    Inventor: Michael Brent Ford
  • Patent number: 8517700
    Abstract: The present invention relates to a submersible pump and a submersible pump system for pumping liquid to a marine structure, the pump being adapted to be located in a tube. The pump comprises an upper portion and a lower portion. The upper portion is adapted to be connected to means for suspending the pump in the tube. The pump has a vertical direction extending from the lower portion to the upper portion. The pump further comprises an inlet for allowing the liquid into the pump and an outlet for allowing the liquid out of the pump. The pump further comprises a sealing means located downstream of the inlet and the outlet in the vertical direction, the sealing means being adapted to seal against an inner surface of the tube. The invention further relates to an arrangement for hydraulic drive of the submersible pump and to a semi-submersible unit comprising the submersible pump system.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: August 27, 2013
    Assignee: GVA Consultants AB
    Inventor: Lars-Olof Liberg
  • Patent number: 8505747
    Abstract: A cyclonic debris evacuation apparatus and method for evacuating debris in a pumping system that forms between the plunger exterior and barrel interior. The apparatus is configured for use with a valve rod and has a cyclone component, cup component, ring component, and ring coupler component. The apparatus is also configured for use with a hollow valve rod and has a hollow valve rod coupler component, cup component, ring component, and ring coupler component. The cup component can be composed of a high density poly-fiber material that helps in creating a positive seal between the cup component and barrel interior during pumping operations, helping to direct solids into the cup component and thereby preventing them from travelling southward in the direction of the barrel and causing damage. In another embodiment, the cup component can include a specialized leading edge adapted to direct solids into the cup component.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: August 13, 2013
    Inventor: Michael Brent Ford
  • Patent number: 8479815
    Abstract: A system for supplying water to a desalination plant from a subsurface feedwater supply using one or more slant or horizontally directionally drilled (“HDD”) wells, and for concentrate disposal (e.g., injection of brine). A method for constructing a slant or HDD well feedwater supply system for supplying water from a subsurface feedwater supply or to inject concentrate into a subsea aquifer.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 9, 2013
    Assignee: GEOSCIENCE Support Services, Inc.
    Inventor: Dennis E. Williams
  • Patent number: 8413725
    Abstract: The present application is directed to a subsea separator. The subsea separator suitably comprises (a) a housing having an inlet for receiving a fluid mixture, a non-gaseous fluid outlet located along the housing at a point lower than the inlet, and a gas outlet located along the housing at a point higher than the inlet; (b) a deflector means located within the housing for acting on fluid entering the housing; and (c) a sealing means in communication with the gas outlet for preventing non-gaseous fluid from exiting the housing through the gas outlet, the sealing means being operationally configured to open and seal the gas outlet based on the volume of non-gaseous fluid within the separator; wherein the separator is operationally configured to operate under a differential pressure including a greater external hydrostatic pressure than internal pressure and vice versa.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: April 9, 2013
    Inventors: David C Wright, Jeffery Wilbert Dufrene
  • Publication number: 20130032352
    Abstract: A new method separating sand, solids, and produced particulates down-hole in a well producing hydrocarbons. The separation assembly can include ether one, two, or more segments or stages of varying lengths depending upon the individual application. The assembly is installed into the tubing string or delivery conduit of a well producing hydrocarbons. One stage can consist of a velocity chamber whereby separation of particulates occurs by increasing the downward velocity of particulates and reducing the upward velocity of hydrocarbons thereby allowing the particulates to “fall-out” into a lower chamber where the particulates are captured. Another stage can consist of a filter whereby particulates are captured in a chamber that can consist of filtering materials such as gravel, rock, sand, wood, or manmade materials. Each of the stages can be employed individually or in combination.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Inventor: John M. Raglin
  • Publication number: 20130020070
    Abstract: An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body sized and shaped to be lowered into the production tubing string. A working fluid is provided that can be pumped into the production tubing, by a prime mover. A flow channel into the well bore enables the working fluid to be circulated from the prime mover via the production tubing to the tool body at a location in the well and then back to the wellhead area. A pumping mechanism is provided on the tool body, including upper and lower spur gear or gears connected with a common shaft. The upper spur gear is driven by the working fluid. The lower spur gear is rotated by the first spur gear. The tool body has flow conveying portions that mix the working fluid and the produced oil as the oil is pumped.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 24, 2013
    Inventor: Raymond C. Davis
  • Patent number: 8225859
    Abstract: A debris cleanup tool uses a movable eductor to reconfigure the flow scheme through the tool. During the debris pickup mode, pressurized fluid is delivered to through the tubing to the eductor inlet. The outlet of the eductor is into the surrounding annulus where the flow splits with most going to the surface and the rest down and into a mill making cuttings. The flow into the mill takes the cuttings to a collection volume and then screens the internal flow stream before directing it into the eductor inlet. The eductor body can be repositioned to close the eductor outlet to the annulus and open the outlet into the housing to allow reverse flow. In one embodiment a ball is dropped and pressure is built to break a shear pin to shift the eductor body and to open a bypass around the ball.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 24, 2012
    Assignee: Baker Hughes Incorporated
    Inventors: Joe P. Moidel, Lee Brousasard, Gerald P. Comeaux, Ronald E. Burger, Ronald A. Moore
  • Patent number: 8132625
    Abstract: An eductor sub is used as a portion of a downhole debris removal apparatus. It features an eductor outlet port that is selectively closed for run in to allow flow pumped through a tubing string to all go to the lower end of the debris removal tool to fluidize the debris and help prevent the tool from getting stuck on the way to the desired depth. When the desired depth is reached a ball lands on a seat that is connected to a sleeve that is displaced to move the sleeve away from the eductor outlet so that future flow coming down the casing string will create a reduced pressure within the tool to draw some of the exiting flow after the eductor exit in a downhole direction along an annular space to the debris removal tool entrance for debris removal.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: March 13, 2012
    Assignee: Baker Hughes Incorporated
    Inventor: Neil A. Anderson
  • Patent number: 8056629
    Abstract: A system is disclosed for supplying water to a desalination plant from a subsurface feedwater supply using one or more slant wells. A method is disclosed for constructing a slant well feedwater supply system for supplying water from a subsurface feedwater supply. A system of angled wells (slant wells) is constructed. The slant wells obtain a desalination feedwater supply from permeable aquifer systems near and/or beneath a saline water source (i.e., an ocean, sea, or salty inland lake). The slant wells induce recharge of the aquifer system through the floor of the ocean, sea, or inland lake due to the hydraulic head difference between the slant well pumping level and the level of the ocean, sea, or lake. As the supply source is relatively constant, the water supply to such a slant well system generally provides a long-term, sustainable water source for a desalination plant.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: November 15, 2011
    Assignee: GEOSCIENCE Support Services, Inc.
    Inventor: Dennis E. Williams
  • Patent number: 8051907
    Abstract: 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 desander with an ESP may be used with gas separator (60), which may include a seal (24) for positioning above the producing formation. The separator (60) may be used independent of the desander for some applications.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: November 8, 2011
    Inventor: Delwin E. Cobb
  • Patent number: 7909092
    Abstract: 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 desander with an ESP may be used with gas separator (60), which may include a seal (24) for positioning above the producing formation. The separator (60) may be used independent of the desander for some applications.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: March 22, 2011
    Assignee: Sepaco LLC
    Inventor: Delwin E. Cobb
  • Publication number: 20100258297
    Abstract: A wellbore cleanup tool is run on slickline. It has an onboard power supply and circulation pump. Inlet flow is at the lower end into an inlet pipe that keeps up fluid velocity. The inlet pipe opens to a surrounding annular volume for sand containment and the fluid continues through a screen and into the pump for eventual exhaust back into the water in the wellbore. A modular structure is envisioned to add debris carrying capacity. Various ways to energize the device are possible. Other tools run on slickline are described such as a cutter, a scraper and a shifting tool. A motor driven by an onboard power supply operates the circulation pump as well as a vibration device to agitate the debris and prevent coring into the debris if compacted. A shroud presents an alternate flow path if the housing lower end is embedded in debris.
    Type: Application
    Filed: January 13, 2010
    Publication date: October 14, 2010
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Gerald D. Lynde
  • Publication number: 20100258296
    Abstract: A wellbore cleanup tool is run on slickline. It has an onboard power supply and circulation pump. Inlet flow is at the lower end into an inlet pipe that keeps up fluid velocity. The inlet pipe opens to a surrounding annular volume for sand containment and the fluid continues through a screen and into the pump for eventual exhaust back into the water in the wellbore. A modular structure is envisioned to add debris carrying capacity. Various ways to energize the device are possible. Other tools run on slickline are described such as a cutter, a scraper and a shifting tool.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 14, 2010
    Inventors: Gerald D. Lynde, Yang Xu
  • Publication number: 20100243258
    Abstract: A downhole debris recovery tool including a ported sub coupled to a debris sub, a suction tube disposed in the debris sub, at least one magnet disposed in the debris removal tool, and an annular jet pump sub disposed in the ported sub and fluidly connected to the suction tube. A method of removing debris from a wellbore including the steps of lowering a downhole debris removal tool into the wellbore, flowing a fluid through a bore of an annular jet pump sub, jetting the fluid from the annular jet pump sub into a mixing tube, displacing an initially static fluid in the mixing tube through a diffuser, thereby creating a vacuum effect in a suction tube to draw a debris-laden fluid into the tool, flowing the debris-laden fluid past at least one magnet disposed in a debris housing, and removing the tool from the wellbore is also disclosed.
    Type: Application
    Filed: March 26, 2009
    Publication date: September 30, 2010
    Applicant: Smith International, Inc.
    Inventors: Craig Fishbeck, John C. Wolf
  • Publication number: 20100236787
    Abstract: An improvement to a prior art sand release apparatus and method uses a pair of telescoped tubular members. In the improved system and method, the telescoped members are prevented from completely telescoping by a J-hook latch. Also in the improved system and method, a wear resistant seal prevents leakage when the telescoped members are not extended.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 23, 2010
    Inventor: L. D. Hall
  • Publication number: 20100175869
    Abstract: 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 desander with an ESP may be used with gas separator (60), which may include a seal (24) for positioning above the producing formation. The separator (60) may be used independent of the desander for some applications.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 15, 2010
    Inventor: Delwin E. Cobb
  • Patent number: 7703508
    Abstract: 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 housing also comprises at least one fluid intake port positioned to allow entry of fluid into the elongated filter housing. A deformable sealing element is installed along an outer surface of the elongated housing and serves to direct fluid flow.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: April 27, 2010
    Assignee: Schlumberger Technology Corporation
    Inventor: Jacques Orban
  • Publication number: 20100089568
    Abstract: A submersible water pump and a dewatering system comprising the submersible pump. The submersible water pump includes a housing and an outer tube. The housing includes a housing dividing wall and a cylinder head having a bore therethrough through which the outer tube fits. The housing is in slidable engagement with the outer tube and the housing dividing wall. The dewatering system with the submersible pump is used to pump water from vertical coal bed methane wells.
    Type: Application
    Filed: December 16, 2009
    Publication date: April 15, 2010
    Inventor: Richard E. Scallen
  • Patent number: 7673684
    Abstract: An ESP/separator assembly (10) is positioned downhole in a well on a tubular string (18) to pump downhole fluids to the surface. The assembly includes an electric submersible pump (12) and an electrically powered motor (20) positioned below the pump. An electrical cable (22) extends downhole past the motor and to the pump. A generally cylindrical shroud (26) is positioned circumferentially about the pump, the motor, and a portion (24) of the cable extending past the pump and to the motor. A separator (60) is provided at the lower end of the shroud, such that the shroud supports substantially the weight of the separator.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: March 9, 2010
    Inventor: Delwin E. Cobb
  • Publication number: 20090173501
    Abstract: Apparatus for borehole cleaning, comprises: a tubular conveyance for extending from the surface into a borehole to a region to be cleaned; a motor mounted at the end of the tubular conveyance that in use is introduced into the borehole; a pump connected to the motor and having a nozzle; a power cable extending trough the tubular conveyance from the surface to provide power to the motor; the pump being arranged such that, when positioned in the borehole and operated by the motor, the pump withdraws material from the borehole through the nozzle and pumps it into the tubular conveyance to the surface.
    Type: Application
    Filed: April 26, 2007
    Publication date: July 9, 2009
    Inventors: Spyro Kotsonis, Warren Zemlak, Eric Lavrut
  • Patent number: 7540323
    Abstract: A rod actuated downhole well pumping system is provided with spaced apart annular elastomer members secured to the pump rod at predetermined intervals to prevent solids particulates entrained in the pumped fluid from settling down to and clogging the pump mechanism during periods of pumping activity. The elastomer members are provided with longitudinal slits so that they may be sleeved over a pump rod without disconnecting the rod from the pump assembly in retrofitted installations. The elastomer members are preferably secured to the pump rod with a suitable adhesive and are of a diameter at least slightly less than the inner diameter of the tubing through which fluid is being pumped.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: June 2, 2009
    Inventor: Charles W. McAnally
  • Publication number: 20090078422
    Abstract: An enclosed circulation tool for a well including a tubular body having a top end, a bottom end and an interior cavity. A progressive cavity pump positioned at the bottom end of the body, the pump having a rotor mounted within a stator. The rotor has an upper end and a lower end, with the upper end extending into the interior cavity. A drive is coupled to and adapted to rotate the rotor in order to draw sand into the interior cavity. A first fluid passage is provided along which fluids from pumped from surface pass to fluidize solids within the interior cavity. A second fluid passage is provided along which fluidized solids from within the interior cavity pass to surface.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 26, 2009
    Applicant: SOURCE ENERGY TOOL SERVICES INC.
    Inventor: Ken Manson
  • Patent number: 7404702
    Abstract: 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 and directing it to the groove. Ports within the groove permit debris to enter the debris evacuation apparatus. Interior to the debris evacuation apparatus, the entering debris will become mixed with pumped fluid, and will be drawn out of the pumping system with the pumped fluid. The pumped fluid passing through the debris evacuation apparatus will be caused to rotate by an interior section located at a south portion of the debris evacuation apparatus, utilizing a plurality of angled veins surrounding a closed center section located at a north end of the interior section.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: July 29, 2008
    Inventor: Michael Brent Ford
  • Patent number: 7296622
    Abstract: 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 outlet connecting the chamber to the fluid exchange pathway. The rotatable gravity separator further includes a weight that causes the rotatable gravity separator to remain in a substantially constant orientation with respect to the force of gravity.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: November 20, 2007
    Assignee: Wood Group ESP, Inc.
    Inventor: Chengbao Wang
  • Patent number: 7144549
    Abstract: 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 progressing cavity pumps are applicable.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: December 5, 2006
    Assignee: Baker Hughes Incorporated
    Inventor: Dan L. Adams
  • Patent number: 7051815
    Abstract: 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 ends extends sealingly through the capsule for accessing a portion of the well below the capsule. The invention also includes a method of pumping fluid from a well wherein a pump assembly enclosed in a capsule is protected from pressure. In this method, the pump is shut off and well fluid is blocked from the interior of the capsule. Pressure is then applied to the well fluid surrounding the capsule, the capsule isolating the pump assembly from the pressure.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: May 30, 2006
    Assignee: Baker Hughes Incorporated
    Inventors: Floyd D. Ireland, Janislene S. Ferreira
  • Patent number: 7017663
    Abstract: 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 upstream end that is capable of receiving during normal operation liquid from the lower region of the downstream part of the reception well; and a secondary underground oil/water separator having an upstream end that is capable of receiving during normal operation liquid from the upper region of the downstream part of the reception well, the secondary separator having an outlet for de-watered oil that is in fluid communication with the inlet of a production well and an outlet for a water-enriched component that is in fluid communication with the water discharge system.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: March 28, 2006
    Assignee: Shell Oil Company
    Inventors: Gerardus Hugo Polderman, Paulus Henricus Joannes Verbeek, Jelle Sipke Bouma, Eric Johannes Puik
  • Patent number: 7008197
    Abstract: 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 and directing it to the groove. Ports within the groove permit debris to enter the debris evacuation apparatus. Interior to the debris evacuation apparatus, the entering debris will become mixed with pumped fluid, and will be drawn out of the pumping system with the pumped fluid. The pumped fluid passing through the debris evacuation apparatus will be caused to rotate by a screw-in insert located at a south portion of the debris evacuation apparatus, utilizing a plurality of angled veins surrounding a closed center section located at a north end of the screw-in insert.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: March 7, 2006
    Inventor: Michael Brent Ford
  • Patent number: 6901999
    Abstract: 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 swab cup; and a sifter attached to the swabbing tool below the swab cup for filtering particulates from fluid passing from below to above the swab cup. The sifter is barrel shaped and is provided with a sealing element attached to the sifter to force fluid into the sifter. The sifter has an interior and the sealing element is dimensioned to seal against a casing or tubing wall and force fluid into the sifter. The openings in the sand sifting element may be slots, with a size between 0.125 mm to 0.635 mm.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: June 7, 2005
    Assignee: Nabors Industries, Inc.
    Inventor: Daryl R. Sugden
  • Patent number: 6719050
    Abstract: 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 rotating the screw pump, wherein the fluid moves past the bit, across the flapper valve assembly, and through the sand screen. The solid particles stay in a cavity above the flapper valve, but the fluid moves further along the screw pump and is returned along the outside of the tool to the bit, to start the cycle over again. Over time, the cavity fills with solid particles, and the device is raised to the surface, where the accumulated solid particles are dumped. The device can be re-introduced into the well to remove more solid particles, if necessary.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: April 13, 2004
    Inventor: Kenneth E. Longacre
  • Patent number: 6698521
    Abstract: 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 fluids are drawn into the solids separator before entering the submersible pump. Solid particulates are separated from the fluid that flows through the solids separator before entering the submersible pump. The solid particulates are routed past the submersible pump. The solid particulates may be reinjected into the fluid discharged from the pump.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: March 2, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Peter Schrenkel, Jimmie H. Naylor, Roy R. Fleshman, Kevin T. Scarsdale, Rodger D. Lacy, Dwight Chilcoat
  • Publication number: 20030196952
    Abstract: A sand and particle separator for fluids is configured to optimize the particulate removal and minimize the diameter of the system. An auger is located at the lower end of the separation chamber and is driven by a drive shaft. The drive shaft may extend through the separation chamber and to drive a pump located above the separation chamber. The separator may have other types of devices, such as shaped orifices, to create centrifugal force in the fluid. To increase the speed of the fluid within the separator, accelerators, such as a conical entrance to the chamber, may be added to the system to create a venturi effect on the fluid entering the separation chamber. A reflector may be attached around the drive shaft to reflect the cleaned fluid upward toward the pump.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 23, 2003
    Inventor: Theodore A. Kampfen
  • Patent number: 6619390
    Abstract: 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 outer diameter at its lower end which causes the swirling inlet fluid to accelerate—thus aiding in particle separation.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: September 16, 2003
    Inventor: Charles W. Kellett, III
  • Publication number: 20030145990
    Abstract: 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 rotating the screw pump, wherein the fluid moves past the bit, across the flapper valve assembly, and through the sand screen. The solid particles stay in a cavity above the flapper valve, but the fluid moves further along the screw pump and is returned along the outside of the tool to the bit, to start the cycle over again. Over time, the cavity fills with solid particles, and the device is raised to the surface, where the accumulated solid particles are dumped. The device can be re-introduced into the well to remove more solid particles, if necessary.
    Type: Application
    Filed: February 6, 2002
    Publication date: August 7, 2003
    Inventor: Kenneth E. Longacre
  • Publication number: 20030141056
    Abstract: A method and system for downhole treatment and pumping of well fluids enhances the pumping of viscous fluids to the surface. The first step is to separate the oil and water from the well fluid and then channel the oil to a chamber that encloses the motor. The heat from the motor will increase the heat of the crude oil flowing past the motor, thereby lowering the viscosity of the crude oil. The water flows separately past the motor in another passageway, and remixes with the oil. After the oil and water recombine, the treated well fluid has a lower viscosity, and the fluid is then pumped to the surface more efficiently than without treating the oil.
    Type: Application
    Filed: January 28, 2002
    Publication date: July 31, 2003
    Inventor: Joseph E. Vandevier
  • Patent number: 6533033
    Abstract: 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 port and from entering the pump intake port to damage the internal parts of the pump. The pump protection system may be back flushed to clean the pump protection system without damaging the pump. The pump protection system also prevents entrained gasses from entering the pump. A pressure relief valve is also disclosed which provides back pressure on the pump at pump startup.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: March 18, 2003
    Inventor: Dale Skillman
  • Publication number: 20020139526
    Abstract: 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 port and from entering the pump intake port to damage the internal parts of the pump. The pump protection system may be back flushed to clean the pump protection system without damaging the pump. The pump protection system also prevents entrained gasses from entering the pump. A pressure relief valve is also disclosed which provides back pressure on the pump and, thus, greatly reduces upthrust damage at pump startup.
    Type: Application
    Filed: December 13, 2000
    Publication date: October 3, 2002
    Inventor: Dale Skillman
  • Publication number: 20020134554
    Abstract: 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 fluids are drawn into the solids separator before entering the submersible pump. Solid particulates are separated from the fluid that flows through the solids separator before entering the submersible pump. The solid particulates are routed past the submersible pump. The solid particulates may be reinjected into the fluid discharged from the pump.
    Type: Application
    Filed: May 24, 2002
    Publication date: September 26, 2002
    Inventors: Peter Schrenkel, Jimmie H. Naylor, Roy R. Fleshman, Kevin T. Scarsdale, Rodger D. Lacy, Dwight Chilcoat