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| Number | Title | Issue Date |
| 7954546 | Subterranean screen with varying resistance to flow 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 fi... | 06/07/2011 |
| 7891420 | Wellbore apparatus and method for completion, production and injection 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 t... | 02/22/2011 |
| 7766082 | Flexible liner for drilled drainhole deployment 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. ... | 08/03/2010 |
| 7438191 | Angle rod screen design 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 distri... | 10/21/2008 |
| 7287684 | Filter cartridge assembly and method of manufacture An apparatus for filtering well fluids and method of manufacture is disclosed. The apparatus comprises an inner support, a filter spirally wrapped around the inner support, and an outer support wrapped around the filter enclosing the filter between the inner and out... | 10/30/2007 |
| 7108060 | Fracturing different levels within a completion interval of a well Method and apparatus for fracturing different levels of a completion interval in a well. A workstring lowers a fracturing string which, in turn, is comprised of a base pipe which is blank except for perforated sections spaced along its length. Screen may be provided... | 09/19/2006 |
| 7108062 | Expandable well screen An expandable well screen provides increased collapse, torsional and tensile strength. In a described embodiment, an expandable well screen includes a generally tubular base pipe and an external filtering media. The well screen is configured to have sufficient torsi... | 09/19/2006 |
| 7063790 | Filter candle A filter candle for a precoated filter for filtering and/or stabilizing fluids, especially beer, the filter candle comprising a tubular filter body that is formed from a spirally wound wire, with gaps being provided between the wire windings as fluid passages. To im... | 06/20/2006 |
| 6994170 | Expandable sand control screen assembly having fluid flow control capabilities and method for use of same A sand control screen assembly (60) comprises a base pipe (62) having at least one opening (64) that allows fluid flow therethrough and a filter medium (66) positioned about the exterior of the base pipe (62) that allows fluid flow... | 02/07/2006 |
| 6945356 | Termination arrangement for a horizontal lifeline cable A termination arrangement for a horizontal lifeline cable (4) for use with a structure (6) includes an elongate stocking (14) of woven wire form surrounding an end section of the cable (4). The stocking (14) has a first end (22 | 09/20/2005 |
| 6863131 | Expandable screen with auxiliary conduit 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 ordere... | 03/08/2005 |
| 6830104 | Well shroud and sand control screen apparatus and completion method Improved methods and apparatus for completing a subterranean zone penetrated by a wellbore are provided. The improved methods basically comprise the steps of placing a sand control screen (e.g., screens, screened pipes, perforated liners, prepacked screens, etc.) an... | 12/14/2004 |
| 6679334 | Use of helically wound tubular structure in the downhole environment 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.... | 01/20/2004 |
| 6675901 | Use of helically wound tubular structure in the downhole environment 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.... | 01/13/2004 |
| 6412564 | End fitting and method for attaching well screen segments 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 forme... | 07/02/2002 |
| 6227303 | Well screen having an internal alternate flowpath 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 th... | 05/08/2001 |
| 6092604 | Sand control screen assembly having a sacrificial anode 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) form... | 07/25/2000 |
| 5979551 | Well screen with floating mounting 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 ... | 11/09/1999 |
| 5938925 | Progressive gap sand control screen and process for manufacturing the same 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 ga... | 08/17/1999 |
| 5787980 | Well screen having a uniform outer diameter 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 scree... | 08/04/1998 |
| 5738170 | Compact double screen assembly 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 there... | 04/14/1998 |
| 5673752 | Method and apparatus for producing gas from a formation containing both gas and water 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... | 10/07/1997 |
| 5642781 | Multi-passage sand control screen 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 th... | 07/01/1997 |
| 5553669 | Particulate separator for fluid production wells 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 ... | 09/10/1996 |
| 5460416 | Perforated fiber reinforced pipe and couplings for articulating movement 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 eac... | 10/24/1995 |
| 5411084 | Sand filter system for use in a well 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... | 05/02/1995 |
| 5293935 | Sintered metal substitute for prepack screen aggregate 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 distan... | 03/15/1994 |
| 5207856 | Apparatus for making a filter support tube 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 resist... | 05/04/1993 |
| 4819722 | Metal well screen assembly with plastic end fitting and method of attaching same 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 mech... | 04/11/1989 |
| 4742872 | Helically wrapped wire screen assembly and fitting therefor 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 ... | 05/10/1988 |
| 4657079 | Screen 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 wir... | 04/14/1987 |
| 4655922 | Wire locking structure for a filter device 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 t... | 04/07/1987 |
| 4569763 | Wire locking structure for a filter device 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 t... | 02/11/1986 |
| 4494603 | Wire mesh well screen with welded wire support 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, an... | 01/22/1985 |
| 4428423 | Well screen end fitting assembly and method of making same 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 ... | 01/31/1984 |
| 4421646 | Filtering device 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 arrange... | 12/20/1983 |
| 4381820 | Filament reinforced plastic screen and apparatus for making same 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 ... | 05/03/1983 |
| 4378294 | Filament wound well screen and method and apparatus for making same A fiber reinforced plastic well screen including a slotted central section and unslotted end fitting portions is formed by manipulating a single bundle of resin-coated filaments longitudinally and circumferentially relative to a mandrel. The mandrel has a... | 03/29/1983 |
| 4366862 | Downhole pump and testing apparatus A downhole testing apparatus has a modular construction including a pump assembly, a screen assembly, a first packer assembly, an intake port assembly, and a second packer assembly. Improvements are provided in each of the pump assembly, screen assembly, ... | 01/04/1983 |
| 4365669 | Non-solvent bonded plastic well screen assembly Improved method of joining a rigid thermoplastic fitting to a rigid thermoplastic well screen having longitudinal support rods utilizes pressure and friction generated heat to bond a reduced diameter tubular, rigid thermoplastic sleeve portion of the fitt... | 12/28/1982 |
