Spiral Patents (Class 166/231)
  • Patent number: 9476284
    Abstract: An apparatus for continuous removal of fill in a sand screen in a down hole environment is provided, as well as methods of using the apparatus in a continuous fashion such that accumulation of fill is prevented in a sand screen in a down hole environment.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: October 25, 2016
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventors: Majed N. Al-Rabeh, Bandar H. Al-Malki
  • Publication number: 20150144328
    Abstract: The disclosed downhole gas and solids separator includes a suspended helical flighting member for efficient downhole separation of both gases and solids from a hydrocarbon production stream. Centrifugal force, provided by the flighting member, accelerates the coalescence of like materials to enhance separation of both gases and solids within the separator. Centrifugal force urges solids to the outer wall of the separator and gases toward the center, where passageways are designed to allow solids to efficiently migrate toward and accumulate at the bottom of the separator while simultaneously allowing gases to efficiently rise out of the separator device.
    Type: Application
    Filed: September 9, 2014
    Publication date: May 28, 2015
    Inventor: Troy Botts
  • Publication number: 20150101804
    Abstract: Fluid flow between screen-pipe annuli of pipe sections in a down-hole well structure is provided by a fluid communication sleeve assembly that may be installed where adjacent pipe sections are connected. A flow ring is provided at each pipe section end, each flow ring providing fluid communication from and to an annulus between a screen and a corresponding base pipe. The fluid communication sleeve assembly includes a screen shield spaced from the adjoining pipes and the pipe joint, the screen shield connected to a flow ring at each screen shield end, and a lock nut at each screen shield end, the lock nut retaining a screen shield end to a corresponding flow ring. A method for providing fluid flow between screen-pipe annuli of pipe is also provided.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 16, 2015
    Applicant: Delta Screens & Filtration, LLC
    Inventor: Phong Vu
  • Publication number: 20150034301
    Abstract: A well screen for use in a subterranean well can include a loose filter media, a sandstone, a square weave mesh material, a foam, and/or a nonmetal mesh material. A method of installing a well screen in a subterranean well can include dispersing a material in a filter media of the well screen, after the well screen has been installed in the well, thereby permitting a fluid to flow through the filter media. A method of constructing a well screen can include positioning a loose filter media in an annular space between a base pipe and a shroud, so that the filter media filters fluid which flows through a wall of the base pipe.
    Type: Application
    Filed: September 18, 2014
    Publication date: February 5, 2015
    Inventors: Nicholas A. KUO, Gregory S. CUNNINGHAM, Caleb T. WARREN, Brandon T. LEAST, Michael L. FRIPP, Matthew E. FRANKLIN, Stephen M. GRECI, Aaron J. BONNER
  • Publication number: 20140360718
    Abstract: Cylindrical screens and screen assemblies for use with perforated base pipe or casing for sand control in wellbores have generally longitudinally extending slots punched in the screen. The outer surface of the screen material is deformed below the inner surface causing apertures to form along the longitudinal edges of the slot. The slots are generally longitudinally aligned with the longitudinal axis of the cylindrical screens whether butt-welded or spiral-rolled and welded by determining the angle at which the slots need to be punched to result in such alignment. End caps which connect between the screen and the casing extend over the ends of the cylindrical screen and are welded thereto to minimize sand entry. At least one of the end caps may include an expansion joint to permit relative expansion and contraction between the screen and the casing particularly when used in thermal recovery operations.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 11, 2014
    Applicant: ANTON ENERGY SERVICES CORPORATION
    Inventors: Jian (James) MA, Yonghua ZHANG
  • Patent number: 8701758
    Abstract: A well screen (101) having a base pipe (103), a filter layer (105) arranged around the base pipe (103), and a discrete mesh outer standoff layer (107) arranged around the filter layer (105) in a first spiral wrap (109) is provided. The first spiral wrap (109) comprises a first succession of loops such that a trailing edge of a next one of the first succession of loops is in contact, or in overlap, with a leading edge of a previous one of the first succession of loops; and to produce a compressive force on the filter layer (105) radially towards the base pipe (103).
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: April 22, 2014
    Assignee: Completion Products Pte Ltd
    Inventors: Graeme John Dowsett, Anush Rajaram, Michael Hill Fung Cheung, Eddie Hiong Wee Yap, Meng Yeow Gan
  • Patent number: 8701757
    Abstract: A sand control screen assembly (300) includes a base pipe (302) having at least one opening in a sidewall thereof and a screen jacket positioned about the base pipe (302). The screen jacket includes a drainage layer (304) and a filter medium positioned about the drainage layer (304). The drainage layer (304) includes a plurality of circumferentially distributed axially extending ribs (306) and a wrap wire (308) positioned around the ribs (306) forming a plurality of turns having gaps therebetween. The ribs (306) includes a plurality of first ribs (310) having a first cross-sectional rib profile, shaped and sized to maintain an annular space between the wrap wire (308) and the base pipe (302) and a plurality of second ribs (312) having a second cross-sectional rib profile, shaped and sized to provide for a gap between the second ribs (312) and the base pipe (302).
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: April 22, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Stephen Michael Greci
  • Publication number: 20130206406
    Abstract: A well screen for use in a subterranean well can include a loose filter media, a sandstone, a square weave mesh material, a foam, and/or a nonmetal mesh material. A method of installing a well screen in a subterranean well can include dispersing a material in a filter media of the well screen, after the well screen has been installed in the well, thereby permitting a fluid to flow through the filter media. A method of constructing a well screen can include positioning a loose filter media in an annular space between a base pipe and a shroud, so that the filter media filters fluid which flows through a wall of the base pipe.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 15, 2013
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: HALLIBURTON ENERGY SERVICES, INC.
  • Patent number: 8267169
    Abstract: Disclosed herein is an assembly for use in a wellbore which includes a base pipe; a filter medium surrounding at least a portion of the external surface of the base pipe; and an internally profiled sleeve surrounding at least a portion of the filter media. Also included is a method for attaching a hardware accessory to a sand screen assembly which includes providing a base pipe having an inner surface and an outer surface; surrounding the outer surface of the base pipe with a filter medium; engaging the sleeve with the filter medium; and connecting the hardware accessory to the sleeve. Also included is a downhole apparatus which includes a basepipe, where at least a portion of the external surface of the basepipe is profiled; and a sleeve mounted external to the basepipe, where the internal profile of the sleeve corresponds to the external profile of the basepipe.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: September 18, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Terje Moen, Arthur H. Dybevik, Michael D. Langlais, Brody Dunn, Tage Thorkildsen, Kjartan Roaldsnes
  • Patent number: 7980330
    Abstract: A debris collector or strainer assembly for a well string tubular coupling wherein one embodiment discloses a conical coil with one end fixed to a hub, a beveled collar surrounding and supporting the hub and secured thereto with shear pins, the conical coil is deformable as necessary to capture irregular shaped objects between its coils, its loops may be closed, spaced apart, fixed or allowed to expand under pressure, and may be retrieved using an overshot fishing tool to engage a rod extending axially through the coil which may be attached at one or both ends of the coil.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: July 19, 2011
    Inventor: Robert J. LeJeune
  • Patent number: 7954546
    Abstract: A screen section is made with variable resistance to flow in the screen material to balance the flow along the screen length. In one variation different discrete zones have screens configured for different percentages of open area while all have the same particle filtration capability. In another variation discrete portions have differing amounts of overlapping screen portions so as to balance flow without affecting the particle size screened. The cross-sectional shape of a wire wrap underlayment for the screen is made closer to trapezoidal to decrease the angle of opening for the incoming flow paths toward the base pipe. In this manner flow resistance is reduced and flow is increased due to reduced turbulence.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: June 7, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Namhyo Kim, Yang Xu, Michael H. Johnson, Bennett M. Richard, Steve Rosenblatt
  • Publication number: 20110100624
    Abstract: A cyclonic strainer for a well intake that provides for improved separation of gas and fluid in naturally flowing wells during mechanical pumping operations. The strainer includes an elongated member having a channel formed longitudinally therein. A plurality of apertures extend through the elongated member angled downwardly into the channel and away from a center of the channel allowing for a better shear between gas and fluids. The angle of the ports causes fluid to be forced in an opposite direction, resulting in gases and fluids shearing more quickly and cleanly, due to kinetic energy. The angle of the ports can be varied to accommodate different conditions in various well environments. In well environments in which gaseous conditions are extreme, it can be desired for the ports to be sloped southwardly or downwardly at a greater angle than for well environments in which gaseous conditions are not as extreme.
    Type: Application
    Filed: September 2, 2010
    Publication date: May 5, 2011
    Inventor: Michael Brent Ford
  • Patent number: 7891420
    Abstract: A method and apparatus associated with the production of hydrocarbons is disclosed. In one embodiment, an apparatus includes a tubular member having a central opening within an internal portion of the tubular member, wherein the central opening allows hydrocarbons to flow through the tubular member. Also, the tubular member includes openings between the central opening and a region external to the tubular member. In addition to the tubular member, at least two adjacent wire segments are disposed around the tubular member. The at least two adjacent wire segments create at least two flow paths to the central opening. Also, the at least two adjacent wire segments form at least two openings configured to prevent particles greater than a specific size from entering the openings in the tubular member.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: February 22, 2011
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Bruce A. Dale, Charles S. Yeh
  • Publication number: 20100224359
    Abstract: A screen section is made with variable resistance to flow in the screen material to balance the flow along the screen length. In one variation different discrete zones have screens configured for different percentages of open area while all have the same particle filtration capability. In another variation discrete portions have differing amounts of overlapping screen portions so as to balance flow without affecting the particle size screened. The cross-sectional shape of a wire wrap underlayment for the screen is made closer to trapezoidal to decrease the angle of opening for the incoming flow paths toward the base pipe. In this manner flow resistance is reduced and flow is increased due to reduced turbulence.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 9, 2010
    Inventors: Namhyo Kim, Yang Xu, Michael H. Johnson, Bennett M. Richard, Steve Rosenblatt
  • Patent number: 7766082
    Abstract: A liner for inserting into a drain hole, comprising a resilient tubular member with a central bore; wherein the tubular member is formed from a first continuous helically wound wire provided with a passageway to allow fluid communication across the member.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: August 3, 2010
    Assignee: Schlumberger Technology Corporation
    Inventor: Jose Teixeira
  • Publication number: 20090229823
    Abstract: Disclosed herein is an assembly for use in a wellbore which includes a base pipe; a filter medium surrounding at least a portion of the external surface of the base pipe; and an internally profiled sleeve surrounding at least a portion of the filter media. Also included is a method for attaching a hardware accessory to a sand screen assembly which includes providing a base pipe having an inner surface and an outer surface; surrounding the outer surface of the base pipe with a filter medium; engaging the sleeve with the filter medium; and connecting the hardware accessory to the sleeve. Also included is a downhole apparatus which includes a basepipe, where at least a portion of the external surface of the basepipe is profiled; and a sleeve mounted external to the basepipe, where the internal profile of the sleeve corresponds to the external profile of the basepipe.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 17, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Terje Moen, Arthur H. Dybevik, Michael D. Langlais, Brody Dunn, Tage Thorkildsen, Kjartan Roaldsnes
  • Publication number: 20090101363
    Abstract: A liner for inserting into a drain hole, comprising a resilient tubular member with a central bore; wherein the tubular member is formed from a first continuous helically wound wire provided with a passageway to allow fluid communication across the member.
    Type: Application
    Filed: April 16, 2008
    Publication date: April 23, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Jose Teixeira
  • Patent number: 7448501
    Abstract: A screen for separating solids and liquids is formed from parallel strips of wedge wire or similar material into a substantially cylindrical two-sided enclosure in a generally C-shaped profile. Unfiltered liquid containing solids contacts the screen surface on both the convex and concave sides of the C-shaped enclosure. The unit may be placed in a vessel adapted to accommodate two such C-shaped devices in concentric relationship. The vessel may function similar to a candle filter, or a more conventional flow may be used.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: November 11, 2008
    Assignee: Total Separation Solutions, LLC
    Inventor: Kevin W. Smith
  • Patent number: 7438191
    Abstract: A screen for use in distributing a fluid in a process flow system. The screen provides support, and provides for the ability to clean particulates from the screen. The screen includes profiled wires affixed to a support, where the support provides channels to distribute the fluid over the screen. The support includes spacing to improve the cleaning of particulates from the screen.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: October 21, 2008
    Assignee: UOP LLC
    Inventor: William J. Koves
  • Patent number: 7287684
    Abstract: An apparatus for filtering well fluids and method of manufacture is disclosed. The apparatus comprises an inner support, a filter spirally wrapped around the inner support, and an outer support wrapped around the filter enclosing the filter between the inner and outer supports. The filter has longitudinal edges which overlap and the filter is held in place by friction with the inner and outer supports. The method of manufacturing the apparatus comprises continuously and simultaneously wrapping a filter and outer support around an inner support and disposing the filter between the outer and inner supports.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: October 30, 2007
    Assignee: Tubular Perforating Mfg., Ltd.
    Inventor: Edward F. Blackburne, Jr.
  • Patent number: 6863131
    Abstract: An expanding screen has an associated spirally wrapped exterior control line. The control line rests in a spiral trough made up in an exterior perforated jacket. The trough can be made by a pair of ridges disposed substantially parallel to each other or by an ordered spacing of raised dimples in the outer perforated jacket to create spiral troughs. At the screen connections centralizers having a spiral path or paths within can serve a dual function of locating the screen prior to expansion and protecting the control line in the joint area. A fiber optic cable can be placed in the control line.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: March 8, 2005
    Assignee: Baker Hughes Incorporated
    Inventor: Bennett M. Richard
  • Patent number: 6830104
    Abstract: Improved methods and apparatus for completing a subterranean zone penetrated by a wellbore are provided. The improved methods basically comprise the steps of placing a sand control screen (e.g., screens, screened pipes, perforated liners, prepacked screens, etc.) and an outer shroud assembly mounted over the sand screen in the wellbore adjacent the zone to be completed, the shroud having perforated and blank (non-perforated) segments with the blank segments corresponding to selected intervals of the wellbore, for example problem zones such as shale streaks or isolated zones where flows are restricted by mechanical seals or packers, and injecting particulate material into the wellbore, whereby gravel packing takes place in the remaining length of the wellbore/shroud annulus without voids. The inner annulus between the shroud and screen provides an alternate flow path for the slurry to bypass the blocked intervals and continue with its placement.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: December 14, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Philip D. Nguyen, Michael W. Sanders, Ron Gibson, David Lord, David McMechan
  • Publication number: 20040031607
    Abstract: 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 spaced apart around the suction cylinder. At least one of said rods is hollow in order to form a collector rod (TC), said collector rod (TC) having a lateral orifice and communicating with the inside of the suction cylinder via one of its ends.
    Type: Application
    Filed: March 14, 2003
    Publication date: February 19, 2004
    Inventors: Rapha?euml;l Reig, David Bruxelle, Philippe Lavernhe
  • Patent number: 6679334
    Abstract: A system that is useable in a subterranean well includes conveying an elongated strip from a surface of the well downhole into the well; and spirally wrapping the strip to form a tubular structure in the well.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: January 20, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Craig D. Johnson, Patrick W. Bixenman, Thomas H. Zimmerman
  • Patent number: 6675901
    Abstract: A system that is useable in a subterranean well includes a tubular structure that is formed from a spirally wound strip, and the tubular structure is provided downhole in the subterranean well.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: January 13, 2004
    Assignee: Schlumberger Technology Corp.
    Inventors: Craig D. Johnson, Patrick W. Bixenman, Thomas H. Zimmerman
  • Patent number: 6412564
    Abstract: The end fitting of the present invention is generally hollowly cylindrical in shape and sized so that the outer diameter of the end fitting is slightly larger than the outer diameter of the well screen to which the fitting is to be joined. Bores are formed in the body of the end fitting. The number and placement of bores in the end fitting should be such that the number and placement of bores in the end fitting match the number and placement of longitudinal rods in the well screen. The end fitting is mounted to the well screen by means of inserting each of the longitudinal rods of the well screen into each of the bores in the end fitting. The end fitting is permanently secured to the well screen by swaging the end fitting so that the fitting is compressed about the longitudinal rods. Alternatively, adhesive may be used to secure the longitudinal rods in the bores of the end fitting. In an alternative embodiment of the invention, the bores are drilled completely through the end fitting.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: July 2, 2002
    Inventors: Roy F. Senior, Jr., Jeffrey G. Vincent
  • Publication number: 20020020527
    Abstract: The invention relates to a system and a method for well completion, control and monitoring of processes in a reservoir. A combined prefabricated liner and matrix system (4) with defined properties for fast and simple well and/or reservoir completion, monitoring and control is provided. An embodiment of the combined prefabricated liner and matrix system 4 comprises an outer perforated tubular pipe/pipe system 6, an inner tubular screen 7, and a matrix 8. A method for control and monitoring of processes in a well or reservoir using the combined liner and matrix system is also described The combined liner/matrix system may be used in any process equipment, like e.g. reactors, separators and storage tanks. The system may also be used in a gas/oil/water producing or injection well for well completion, control and monitoring.
    Type: Application
    Filed: July 20, 2001
    Publication date: February 21, 2002
    Inventors: Lars Kilaas, Are Lund, Davoud Tayebi, Jostein Sveen, Arne Lund Kvernheim, Marit Valeur Ramstad, Odd Ivar Eriksen, Ole Bernt Lile, Ole Widar Saastad
  • Publication number: 20010047871
    Abstract: A system that is useable in a subterranean well includes a tubular structure that is formed from a spirally wound strip, and the tubular structure is provided downhole in the subterranean well.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 6, 2001
    Inventors: Craig D. Johnson, Patrick W. Bixenman, Thomas H. Zimmerman
  • Patent number: 6227303
    Abstract: A well screen having an internal alternate flowpath for delivering gravel slurry to different levels within a well annulus and a method for assembling same. The screen is comprised of an outer pipe which is concentrically positioned over a base pipe so that an annulus is formed therebetween. Both pipes are perforated along their respective lengths but only part way around their respective circumferences. The respective perforated sections radially align with each other when the pipes are assembled. A plurality of longitudinal ribs isolate the annulus adjacent the perforated sections (i.e. production side of screen) from the annulus adjacent the non-perforated sections (i.e. alternate flowpath side of screen). At least one outlet is provided through the non-perforated section of the outer pipe to provide an outlet from the internal alternate flowpath.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: May 8, 2001
    Assignee: Mobil Oil Corporation
    Inventor: Lloyd G. Jones
  • Patent number: 6092604
    Abstract: A sand control screen assembly (10) having a sacrificial anode (26) is disclosed. The sand control screen assembly (10) comprises a plurality of ribs (16) spaced around a base pipe (12) and a screen wire (18) wrapped around the plurality of ribs (16) forming adjacent turns (20, 22) having gaps therebetween that allow the flow of fluids therethrough while preventing the flow of particulate therethrough. The plurality of ribs (16) includes at least one rib (26) that comprises a first metal. The screen wire (18) comprises a second metal that is cathodic to the first metal such that the at least one rib (26) that comprises the first metal acts as a sacrificial anode to reduce the environmental cracking of the screen wire (18).
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: July 25, 2000
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Patrick W. Rice, Lon T. Youngberg
  • Patent number: 5979551
    Abstract: Well screen assembly for use in horizontal wells and other situations where tensile, torsion and bending forces can damage well screens which are welded to their end supports provides a floating mounting which eliminates welding of the screen segments. A pair of complementary inner and outer slip rings are provided at one end of the well screen assembly with the inner ring being in sealed relationship with a screen segment and the outer ring being integrally affixed to an outer protective cover member and an axial support member such as a pipe base member or a tubular end fitting. The inner ring is free to slide and rotate relative to the outer ring.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: November 9, 1999
    Assignee: United States Filter Corporation
    Inventors: Stephen A. Uban, George A. Gillespie
  • Patent number: 5938925
    Abstract: A progressive gap sand control screen comprising a plurality of parallel ribs spaced around an axis and a screen wire wrapped around the plurality of ribs having turns which extend along the length of the plurality of ribs such that adjacent turns have gaps therebetween, the gaps forming a gap profile in which the gaps near the upper end of the sand control screen are narrower than the gaps near the lower end of the sand control screen, the width of the gaps near the upper end of the sand control screen being less than the diameter of the particles which cause erosion, the gap profile includes a variable gap section near the upper end of the sand control screen and a constant gap section below the variable gap section, the variable gap section having a linear profile, a step type profile, or a nonlinear profile.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: August 17, 1999
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Syed Hamid, Ralph H. Echols, Colby M. Ross
  • Patent number: 5787980
    Abstract: A well screen is composed of a plurality of screen units connected in series. Each of said screen units has a cylindrical connecting section at least at one end thereof and includes a plurality of support rods extending in the axial direction of the screen disposed cylindrically about a section of the screen other than the connecting section at a predetermined interval in the circumferential direction of the screen, and a wire wound on the outer periphery of said support rods so as to form slits of a predetermined width. The well screen further includes outer diameter equalizing means provided about adjacent ones of the connecting sections of two of the screen units connected to each other for substantially equalizing the outer diameter of said connecting sections to the outer diameter of sections other than the connecting sections.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: August 4, 1998
    Assignee: Nagaoka International Corporation
    Inventors: Derry D. Sparlin, Tadayoshi Nagaoka
  • Patent number: 5738170
    Abstract: A compact double screen assembly (20), which can be used alone or mounted on a perforated pipe base (22), has a plurality of rods (30) arranged in cylindrical fashion around an axis (23). A wire (34) is helically wound about the rods (30) and welded thereto at every intersection. Adjacent rods (30) are separated by an inter-rod gap having a slot distance X while adjacent turns of the wire have an inter-turn slot distance Y therebetween. The rods (30) are closely spaced together such that the inter-rod slot distance X is on the order of 80-120% of the inter-turn slot distance Y, and preferably equal to it. A packing cavity (42) is provided between the rods (30) and the wire (34) for accommodating a porous media or packing material (40).
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: April 14, 1998
    Assignee: United States Filter Corporation
    Inventor: Philippe O. Lavernhe
  • Patent number: 5673752
    Abstract: Gas is separated from well fluid solutions by a hydrophobic membrane GORTEX.RTM. like filter element that is permeable to gas but impermeable to water; the filter element, which may include a solids prefilter, is positioned within the well bore containing water or well fluids at a depth where the hydrostatic pressure will allow the gas to bubble out of solution.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 7, 1997
    Inventors: Pat Scudder, George McCourt
  • Patent number: 5642781
    Abstract: An apparatus for controlling sand production within a wellbore completed to a subterranean reservoir is disclosed. The apparatus will include a base supporting member that has a series of perforations included thereon. A jacket member is disposed about the base supporting member, with the jacket member being a helical member with overlapping loops forming multiple passages for the flow of a subterranean gas and fluid. A protective member disposed about the jacket may also be included, with the protective member having a series of perforations formed thereon.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: July 1, 1997
    Assignee: Baker Hughes Incorporated
    Inventor: Bennett M. Richard
  • Patent number: 5553669
    Abstract: An improved particulate separator is made from a strainer mandrel disposed in a velocity tube. The velocity tube and strainer mandrel are hollow and tubularly shaped and positioned concentrically such that a small radial distance is left open between the interior of the velocity tube and the exterior of the strainer mandrel to create an annular, vertical fluid flow region. The velocity tube and the strainer mandrel are attached to each other at their respective top ends by a solid plug means that prohibits fluid flow into or out of the top end of the annular fluid flow region. The bottom end of the strainer mandrel is plugged while the bottom end of the annular fluid flow region is left open to create the main fluid flow inlet to the particulate separator. The preferred velocity tube is a unitary hollow cylinder with a substantially solid wall while the strainer mandrel is preferably a helical tension spring.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: September 10, 1996
    Inventor: C. W. Trainer
  • Patent number: 5460416
    Abstract: A pipe for extracting gases from a landfill well comprises a series longitudinal windings of fiber reinforced resin windings wound for providing longitudinal strength. The longitudinal windings are wound in directions opposite to and intersecting with each other, forming a interlocking network of windings and openings. A number of reinforcing ribs extend circumferentially around the surface of the right and left hand windings at equidistant positions along the surface and at each end of the pipe for providing radial stiffness. The reinforcing rib at each end of the pipe comprises a groove extending circumferentially around the outside surface of the rib for facilitating interconnection with adjacent pipes. A helical winding is wound around the surface of longitudinal windings between adjacent reinforcing ribs for providing longitudinal strength and radial stiffness to the pipe. The pipe comprises a plurality of perforations in its surface.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: October 24, 1995
    Assignee: Ameron, Inc.
    Inventors: Ralph S. Freidrich, Ronald G. Ulrich, Ronald D. Johnson, Robert E. Hamilton
  • Patent number: 5411084
    Abstract: A sand filter for use in a well is provided employing a length of perforated tubing. A tubular wedge wire screen is telescopically positioned on the tubing covering the perforations. A plurality of tubular corrugated filter elements are then positioned on the wedge wire screen in end-to-end relationship. Each of the filter elements is formed of diffusion bonded multiple layers of wire mesh and each of the filter elements is corrugated to provide an external surface having an area at least three times the area of the cylindrical external surface of the tubular wedge wire screen that is encompassed by each filter element. The corrugated filter elements are secured on the wedge wire screen and welded in abutted end-to-end position.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: May 2, 1995
    Assignee: Purolator Products N.A., Inc.
    Inventor: James B. Padden
  • Patent number: 5293935
    Abstract: A prepack well screen assembly has a resistance welded outer screen concentrically mounted in radially spaced relation on a perforated mandrel, thereby defining an annulus in which a sintered metal prepack sleeve is loaded. The longitudinal spacing distance between adjacent turns of the outer screen selectively exclude sand fines of a predetermined minimum size. The porosity of the sintered metal prepack sleeve is selected to pass sand fines in the size range of from about 10 microns to about 150 microns. The effective inlet flow area through the sintered metal prepack sleeve is substantially greater than the effective inlet flow area through the outer screen. The sintered metal prepack screen excludes sand fines from inflowing formation fluid during the initial production phase following a gravel pack operation, without limiting production of formation fluid.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: March 15, 1994
    Assignee: Halliburton Company
    Inventors: Bryant A. Arterbury, James E. Spangler
  • Patent number: 5207856
    Abstract: A filter support tube manufacturing apparatus and method employing operative steps of drawing wire from a reel, and moving the wire, first, through a heater for heating the wire, second, through a fluidized bed for coating the wire with a corrosion resistant material which also serves as a bonding agent and, third, through a second heater. Then, the heated and coated wire is wound onto a rotating mandrel which holds straight plastic reinforcing strips about which the wire is wound. Once winding of the wire is completed and the wire is embedded in the plastic reinforcing strips, the wound wire is cut manually and removed from the mandrel. A new end of the wire extending from the reel is inserted in the mandrel and a new set of plastic strips are installed on the mandrel. Finally, the steps are repeated to make additional filter support tubes.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: May 4, 1993
    Inventor: Clifford H. May
  • Patent number: 4819722
    Abstract: The invention relates to conventional metal well screens which have a screen wire wrapped about a plurality of internal support rods to define the screen slots, and particularly to a novel plastic end fitting made of a thermoplastic material which is mechanically attached to the well screen by means of a plurality of circumferentially spaced tongues which engage the inside surface of the screen wires and have a portion of their outer surface positioned within the screen slots. Slots formed in the end fitting between the tongue portions contain the support rods. A method of attaching a thermoplastic fitting made of a material such as polypropylene is also disclosed and includes the steps of heating the tongue portions so that a portion of their outer surface is melted and then is forced radially outwardly into the screen slots, and preferably slightly beyond them, by a pressure applying device such as a tapered wedge tooling arrangement.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: April 11, 1989
    Assignee: Johnson Filtration Systems, Inc.
    Inventor: Raymond A. Daly
  • Patent number: 4742872
    Abstract: The invention relates to a novel tubular fitting member formed of a deformable material, such as steel, which may be combined with a helically wrapped wire screen to produce a mechanical seal of a gap formed adjacent the cut-off end portion of the screen when the screen is cut off perpendicular to its supports. Such cutting produces a loose, tapered wire tail which is normally broken off, thereby producing an open gap in the screen which is wider than the width of the slot between the wire wraps. The tubular fitting member has a groove formed in its outer surface closely adjacent to the screen end of the fitting. The groove defines the inner wall of a deformable flange which may be selectively forced toward the screen to close any gap formed adjacent its end during the cut-off operation.
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: May 10, 1988
    Assignee: Signal Environmental Systems Inc.
    Inventor: Bruce R. Geske
  • Patent number: 4657079
    Abstract: A screen particularly suitable for use in deep well comprises a reinforcing member (2) of a generally cylindrical configuration, a plurality of support rods (3) arranged on the outside of the reinforcing member (2) in the axial direction thereof and a wire (4) wound helically on the outside of the support rods (3). A multitude of slits (2b) continuous in substantially the circumferential direction of the reinforcing member (2) are formed at a predetermined pitch in the reinforcing member (2). The screen made according to the invention has a much larger opening space and therefore has a greater fluid collecting efficiency than conventional screens while maintaining a sufficient strength against an external pressure.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: April 14, 1987
    Assignee: Nagaoka Kanaai Kabushiki Kaisha
    Inventor: Tadayoshi Nagaoka
  • Patent number: 4655922
    Abstract: This invention relates to a wire locking structure for a filter device, in which an outer circumference of a cylinder body is provided with a screw thread portion. The screw thread portion is wrapped by a wire of isosceles triangle in section. An end of the wire is drawn into a recess and firmly supported in a U-shape by an insert member to be inserted in the recess, thereby a conventional welding means has been removed.
    Type: Grant
    Filed: November 19, 1985
    Date of Patent: April 7, 1987
    Assignee: Arai Machinery Corporation
    Inventor: Koichi Arai
  • Patent number: 4569763
    Abstract: This invention relates to a wire locking structure for a filter device, in which an outer circumference of a cylinder body is provided with a screw thread portion. The screw thread portion is wrapped by a wire of isosceles triangle in section. An end of the wire is drawn into a recess and firmly supported in a U-shape by an insert member to be inserted in the recess, thereby a conventional welding means has been removed.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: February 11, 1986
    Assignee: Arai Machinery Corporation
    Inventor: Koichi Arai
  • Patent number: 4494603
    Abstract: Improved well screen has its open area defined by a helically wrapped strip of wire mesh which is supported by a rigid cage-like structure of welded steel longitudinal support rods and helical wrap wires. The design is cost competitive with the simple, and rather fragile, screens made by wrapping a mesh about a perforated pipe while offering the mechanical strength characteristics of wire-wrapped welded screens and a substantially larger open area for flow. The wire mesh strip is helically wound with a gap and at least one wrap wire is helically wound in the gap so that a small portion of its width can be firmly adhered to the rods while at least another portion of its width overlies an adjacent side edge of the mesh strip.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: January 22, 1985
    Assignee: UOP Inc.
    Inventor: Julian E. Harguindey
  • Patent number: 4428423
    Abstract: End fitting assembly for a spiral wire wound well screen includes a fitting portion which is internally threaded at one end to threadedly engage with a plurality of external wire wraps of the well screen which are wound around a plurality of longitudinal support rods at a greater pitch than the main body of the screen. Preferably, the longitudinal support rods are welded at their tips to the interior surface of the fitting. The assembly technique greatly increases the tensile strength of the joint between the screen and fitting and can be equal to a combination of the individual strengths of a conventional welded fitting and a threaded fitting. Where utmost joint strength is not necessary and welding would not be desirable for reasons such as corrosion prevention, the wire wrap threads can provide all of the joint strength.
    Type: Grant
    Filed: May 6, 1982
    Date of Patent: January 31, 1984
    Assignee: UOP Inc.
    Inventors: Raymond A. Koehler, Bernard M. Hanson
  • Patent number: 4421646
    Abstract: The instant invention relates to an improved filtering device adapted to eliminate any risk of clogging of the filtering material. The invention provides a filtering device for treating any effluents, which comprises a plurality of filtering walls arranged successively between a chamber containing the effluent to be filtered and a chamber containing the filtered effluent, each filtering wall being constituted by spacedly justaposed strips having a trapezoidal section with the large base of the trapezoid located on the inlet face of the filtering wall, said strips being separated from each other, on the inlet face of the filtering wall, by intervals of equal widths forming slots which define effluent inlet areas, the sum of said inlet areas constituting the total inlet area of a filtering wall, and the total inlet area of the upstream wall being less than the total inlet area of the adjacent downstream wall.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: December 20, 1983
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Philippe Correge, Lucien Gay
  • Patent number: 4381820
    Abstract: Filament reinforced cylindrical plastic screens having open slots defined by their surface wires which are of substantially different widths can be produced on a single helically finned mandrel. The slot widths are varied in accordance with the amount of wire-forming material placed in the generally V-shaped grooves defined by the mandrel fins. The grooves have a double relief angle so that the lower support portions of the surface wires will be formed so as to have a slightly tapered, radially elongated cross-section and the upper portions of the wires will have their sides at a substantially greater relief angle. This relationship permits a relatively small change in the total height of the wires to have a substantial effect on the width of the top portion of the wires, and thus, on the width of the slot openings which can be formed between adjacent wires.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: May 3, 1983
    Assignee: UOP Inc.
    Inventor: Walter R. Wagner