Abstract: A sand screen system includes a tubular. The tubular includes at least one through-port from an outer surface of the tubular to an inner surface of the tubular. Further, the sand screen system includes a filtering portion positioned over the at least one through-port on the outer surface of the tubular. A moldable material couples the filtering portion to the tubular.

Abstract: A system of a downhole conformable screen system including a tubular, and a screen defined by a plurality of screen segments positioned radially outward of the tubular, each of the plurality of screen segments being positioned perimetrically between two other of the screen segments, the screen being configured to expand radially to engage with an inner surface of a wellbore after the tubular and screen have been positioned within the wellbore. A method of making a conformable screen for downhole use including forming a plurality of screen segments out of a porous foam, and attaching the plurality of screen segments to a tubular to form a screen around the tubular.

Abstract: A method and apparatus for installing an object in a flow line or other compartment, such as a surface inline filter assembly having a removable screen filter apparatus. A housing has a central through bore and an elongate slot or opening with a cover that can be selectively opened or locked in a closed position when desired. A filter apparatus can be loaded within the assembly, and shifted into a locked position within the central bore of the housing. When removal of the filter apparatus is desired, the cover can be unlocked and opened, and the filter apparatus can be quickly and efficiently removed, cleaned and/or replaced.

Abstract: An impression tool for providing an impression of an object in a borehole includes a block held by a gripper. The block has a plurality of discrete elements that can deform or move so as to create an impression of an impacted object. The bock can be formed of knitted wire mesh. The tool is impacted on an object such that an impression is formed in the block.

Abstract: A method and apparatus for removing dissolved gas from a coal bed or other type of gas bearing formation is provided.

Abstract: A bar-type screen cage has profiled screen bars which are spaced apart in a circumferential direction. Multiple support arrangements which are spaced apart in an axial direction of the screen cage are fastened by welding to the profile bars at the outside. The screen bars, which are spaced apart in an axial direction, form screen slots between them. Each support arrangement includes at least two support wires which are closely spaced apart in the axial direction of the screen bars and which are fixed to the screen bars by resistance welding. The two support wires of each support arrangement and the profile bars-are fixedly connected to one another by way of an additional weld seam.

Abstract: A gravel pack tool for use in a well including a base pipe selectively deployed in the well that defines an outer annulus between the base pipe and an inner wall of the well, a dissolvable plug in a side wall of the base pipe, and tubing positioned within the base pipe that is in selective communication with a source of a bead forming fluid. When the bead forming fluid flows through the tubular and into the well, compounds in the bead forming fluid react to form beads within the outer annulus. The beads collect along a screen that circumscribes the base pipe and define a gravel pack which through which formation fluid is directed prior to entering production tubing in the wellbore.

Abstract: A wire wrap screen manufacturing method for a given screen diameter involves simultaneous winding of parallel wires that begin in circumferentially offset locations on one end of a perforated base pipe that has circumferentially spaced support rods saves fabrication time. Each of the ends of the wires lie in a common plane to allow fitting an end cap for sealing or to just continuously weld at the ends of the wires to seal the assembly to the base pipe. The spot welds to the support rods occur as the wire is wound over such rods. Equal initial circumferential spacing of the start locations for the wires is preferred although asymmetrical spacing is preferred.

Abstract: A rainguard device for insertion on top of a stuffing box containment basin, said device comprises: a top portion; a shield; and a base ring; wherein said top portion comprising a flat circular upper section connected at its underside to a neck connected to a lower section; said neck is adapted to be inserted into an aperture present at a top section of the shield; said top portion having a vertical central aperture going therethrough adapted to receive a polish rod; said shield comprising two halves and having a frusto-conical top portion and defining an aperture at the top thereof and having a cylindrical bottom section; said bottom section defining an aperture and adapted to be inserted into the base ring; said base ring comprising two halves each of which comprising: a lower edge adapted for insertion into the inside of said basin; a middle ring portion supporting an inner lip and an outer lip, both inner and outer lips extending updwardly from the middle ring portion and both lips extending around the ci

Abstract: An access device installs on a wellscreen joint during manufacture and allows access to one or more spaces or layers where tracer elements can be installed adjacent the joint's screen jacket (i.e., internal and/or external to the screen jacket). Portion of the access device is removable to allow installation of the tracer elements after the joint has been manufactured. With the tracer elements installed, the access device can be reassembled and locked in place. Any various mechanism can allow the access device to be partially removed, the tracer elements to be installed, and the access device to be reassembled in place. For example, an end ring holding the jacket on the basepipe can have at least one channel communicating with a space or layer for insertion of the tracer elements. A removable cover can be removed to allow access to the at least one channel and can be reattached for the wellscreen to be used downhole.

Abstract: A well screen assembly includes an elongate base pipe, a shroud layer about the base pipe, and a mesh layer between the shroud layer and the base pipe. A portion of the mesh layer overlaps another portion of the mesh layer to form an area of overlap. A spine is positioned proximate substantially an entire length of the area of overlap, and transmits a force from the shroud layer to the mesh layer that compresses and seals the area of overlap against passage of particulate.

Abstract: A pile connecting metal bracket adapted to be secured to a structure to be supported by a metal pile is described. The bracket has a pair of elongated straight vertical support flanges in a pair of spaced-apart horizontal guide walls secured across the vertical support flanges. The guide wall guides driven hollow metal tubes of the pile. A drive mechanism is removably connected to an attachment. The pile connecting bracket is secured to a structure and the metal tubes of the pile are connected to the metal bracket after the metal pile has been driven into soil to a position of rest whereby the pile can support the structure.

Abstract: A filtration device including: a casing 1 having a fluid inlet 6, a fluid outlet 7, a raw fluid chamber 8, and a filtered-fluid chamber 9; a box-shaped or tube-shaped filter element 3 (3a, 3b) having a filter medium 31 removably installed inside the casing 1, allowing the fluid to pass through from inside to outside to filter the fluid, and having a backwashing mechanism inside thereof; and a backwash fluid discharge pipe 4 which discharges backwash fluid to the outside, wherein the backwashing mechanism has a fixed pipe 33 fixed to the inside of the filter element, a movable pipe 34 movably fitted to the outside of the fixed pipe, and a backwash head 35 attached to the movable pipe to backwash the filter medium, wherein the fixed pipe and the movable pipe movably guide the backwash head and form a discharge passage for backwash fluid.

Abstract: An expandable well screen can include a filter section which is displaced outward when the well screen is positioned downhole, the filter section including an outer surface that is recessed relative to a raised boundary of the filter section adjacent the recessed outer surface. Another filter section can include an outer surface having one more structures thereon which space the outer surface away from a well surface when the filter section is displaced outward. Another filter section can include one or more structures on an interior thereof which space apart inner and outer sides of a wall of the filter section, a telescoping tubular connector which provides fluid communication between the filter section and a base pipe of the well screen, and a filter media being positioned in the tubular connector.

Abstract: A filter for trapping solids and methods for using the same. The filter can include at least two support members that can be oriented in a first direction, and at least two support members that can be oriented in a second direction. The second direction can be generally orthogonal to the first direction. A housing can encase and surround the support members, and can thereby form an opening therethrough. The housing can include one or more apertures providing a flow path from within the housing to outside the housing. A first end can permit fluid flow into the housing, and a second end can at least partially restrict fluid flow therethrough.

Abstract: A sand control screen assembly includes a base pipe, a mesh layer, and a sand screen layer. The base pipe includes a tubular surface and a plurality of perforations formed in the surface. The mesh layer is disposed around the base pipe. Additionally, the mesh layer comprises a plurality of functionalized fibers, wherein one or more of the plurality of functionalized fibers break off from the mesh layer when impacted by one or more particulates. In some embodiments, a sand control screen assembly includes a screen layer with a functionalized coating.

Abstract: A downhole filtration tool to remove sand and other solid particles from production fluid in a subterranean well. The downhole filtration tool includes a perforated mandrel surrounded by at least one filter element made of an open weave polymeric fiberglass material. In addition, the downhole filtration tool may include an additional screen or mesh installed in a separating annulus intermediate of the mandrel and the filter element to provide a filter having improved permeability and resistance to chemical and physical forces.

Abstract: A method and apparatus are provided for separating droplets of finely aerosolized elemental mercury from a fluid stream in which the droplets are dispersed, particularly a gaseous stream. In the method, a precious metal wire capillary surface or precious metal-coated wire capillary surface is contacted with the gaseous stream, causing the aerosolized droplets to deposit on the capillary surface and by capillary action to coalesce with other of such droplets. The surface is oriented to allow the mercury to flow by gravitational forces and capillary action to the lowermost portions of the surface, where it accumulates and can be collected. Metallic capillary surfaces comprised of finely braided strands of silver, gold, palladium, platinum, or rhodium wire, or wire coated with one or more of these metals, are particularly preferred.

Abstract: A filtering assembly is laid flat on an outer shroud. An inner drainage layer is set over the filtering assembly while laid flat such that the inner drainage layer overlaps the filtering assembly. The inner drainage layer is sealed and secured to the outer shroud by diffusion bonding or welding while overlaying the filtering assembly. With the filtering assembly held firm between the inner drainage layer and the outer shroud a spiral winding procedure is commenced to roll the flat assembly into a cylindrical shape. The edges are sealed by welding or diffusion bonding. The spiral winding and seam closure can be done on a perforated base pipe or the base pipe can be inserted into the finished assembly at a later time and secured. Alternatively the filtering assembly and outer shroud, with or without the drainage layer can be wound over a perforated base pipe or a complete screen assembly.

Abstract: An expandable screen comprises a first end comprising a first coupling mechanism, a second end comprising a second coupling mechanism, a wire wrap section extending between the first end and the second end, and a plurality of rods coupled to the wire wrap section. The wire wrap section is coupled to the first and the second end, and the wire wrap section is configured to radially expand. The plurality of rods is configured to control spacing between adjacent wire edges upon radial expansion of the wire wrap section.

Abstract: A system and method for sampling fluid from a production wellsite are provided. The system includes an interface operatively connectable to the port and a separation circuit operatively connectable to the interface for establishing fluid communication therebetween. The separation circuit includes a pumping unit and at least one sample chamber. The pumping unit includes pumping chambers having a cylinder with a piston therein defining a fluid cavity and a buffer cavity. The fluid cavities define a separation chamber for receiving the fluid and allowing separation of the fluid therein into phases. The buffer cavities have a buffer fluid selectively movable therebetween whereby the fluid flows through the separation circuit at a controlled rate. The sample chamber is for collecting at least one sample of the phases of the fluid.

Abstract: A method is for use with subterranean formations, such as oil and/or gas reservoirs. In some examples (e.g., production examples), the method improves the production from that formation. Some of the examples of the method describe selecting both an exertive force (e.g., a pressure) to apply at a wellbore, but together with a drawdown pressure at the wellbore to modify operations (e.g., improve production) at that subterranean formation. The selection of one or both of the exertive force and drawdown pressure may be based on the downhole environment at that wellbore, which can include the porosity and/or permeability of a near-wellbore formation radially surrounding a wellbore. The exertive force and drawdown pressure may be specifically selected to modify the porosity and/or permeability of the near-wellbore formation.

Abstract: A downhole filtration tool to remove sand and other solid particles from production fluid in a subterranean well. The downhole filtration tool includes a perforated mandrel surrounded by at least one filter element made of an open weave polymeric fiberglass material. In addition, the downhole filtration tool may include an additional screen or mesh installed in a separating annulus intermediate of the mandrel and the filter element to provide a filter having improved permeability and resistance to chemical and physical forces.

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.

Abstract: An expandable well screen can include a filter section which is displaced outward when the well screen is positioned downhole, the filter section including an outer surface that is recessed relative to a raised boundary of the filter section adjacent the recessed outer surface. Another filter section can include an outer surface having one more structures thereon which space the outer surface away from a well surface when the filter section is displaced outward. Another filter section can include one or more structures on an interior thereof which space apart inner and outer sides of a wall of the filter section, a telescoping tubular connector which provides fluid communication between the filter section and a base pipe of the well screen, and a filter media being positioned in the tubular connector.

Abstract: Certain aspects and features relate to dehydrator screens that are inexpensively made wire, mesh, or stamped metal screens that can direct carrier fluid from a gravel pack slurry efficiently to one or more screens associated with a base pipe.

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.

Abstract: A sand control device is used for restricting the flow of particles from a subsurface formation into a tubular body within a wellbore during production operations. The sand control device is divided into compartments along its length that provide redundancy for particle filtration. Each compartment first comprises a base pipe. The base pipe defines an elongated tubular body having a permeable section and an impermeable section within each compartment. Each compartment also comprises a first filtering conduit and a second filtering conduit. The filtering conduits comprise filtering media and generally circumscribe the base pipe. The filtering conduits are arranged so that the first filtering conduit is adjacent to the non-permeable section of the base pipe, while the second filtering conduit is adjacent to the permeable section of the base pipe.

Abstract: The invention relates to a separating device for tubular flow-through devices (22) which serve for the extraction of liquids or gases from wells drilled in rock or deep wells, the separating device being suitable for the removal of sand and rock particles and comprising an annular stack (20) of brittle-hard annular disks, the disks (30) being stacked and braced in such a way that a separating gap (37) for the removal of sand and rock particles is present in each case between the individual disks (30), a coupling-on element (18, 19) at one or both ends of the annular stack (20), a clamping device at one or both ends of the annular stack (20), making it possible on the one hand to flexibly brace the brittle-hard disks (30) and on the other hand to variably fasten the annular stack (20) on the tubular flow-through device (22).

Abstract: A screen frame assembly, including a frame having a first end, a second end, a top surface, a first side disposed between the first end and the second end, and a second side disposed opposite the first side and disposed between the first end and the second end, in which at least one of the first end and the second end is sloped.

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).

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).

Abstract: An expandable screen includes, a body constructed of one or more strands of a shape memory material randomly distributed in a mat structure, the body is stable at a first volume and expandable to a second volume upon a change in environment.

Abstract: A separating device for removing sand and rock particles, and is an integral component of extraction equipment for extraction of liquids or gases from deep wells, having at least one ceramic filter module comprising: an annular stack of annular discs, the upper side of which has at least three elevations uniformly distributed over the circumference of the discs, the discs are stacked such that a separating gap for the removal of sand and rock particles is present between the individual discs, a coupling-on element at the upper end and a coupling-on element at the lower end of the annular stack, a clamping device bracing the annular stack, an outer cage, a coupling element at the upper end and a coupling element at the lower end of the filter module connecting the filter module to further components of the extraction equipment.

Abstract: A system and methodology utilizes a technique for filtering sand. For example, a sand control system may be provided with a base pipe having a non-permeable section and a permeable section in which the permeable section is created via at least one opening formed laterally through a wall of the base pipe. The sand control system also comprises at least one drainage tube positioned along an exterior of the base pipe and coupled to the base pipe in fluid communication with the at least one opening. The drainage tube is permeable and enables the inflow of fluid while preventing the influx of sand. The inflowing fluid is delivered along an interior of the drainage tube and through the opening into an interior of the base pipe for production.

Abstract: Certain aspects and features relate to dehydrator screens that are inexpensively made wire, mesh, or stamped metal screens that can direct carrier fluid from a gravel pack slurry efficiently to one or more screens associated with a base pipe.

Abstract: A technique enables long-lasting filtering of fluid flow in a wellbore. The technique employs a base pipe and a sand control screen surrounding the base pipe. The sand control screen has a support layer, a filter media surrounding the support layer, and a protective shroud. At least one of the support layer and the protective shroud layer utilizes longitudinal ribs held in place by a transverse wire. The components of the sand control screen cooperate to provide a simple but durable system for long term filtering of sand from fluid flow in a wellbore.

Abstract: An embodiment of an apparatus may include a permeable member made by combining a particulate additive to one or more materials, which materials when processed without the particulate additive form a substantially impermeable mass, wherein the permeable member inhibits flow of solid particles above a particular size through the permeable member.

Abstract: An assembly that is usable with a well includes a base pipe, a shroud that is disposed radially outside of the base pipe and tubes. The tubes are disposed radially outside of the base pipe and are radially inside the shroud. The tubes longitudinally extend along the base pipe and radially expand to radially expand the shroud in response to pressurization of the tubes.

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.

Abstract: A technique enables long-lasting control over fluid flow in a wellbore. The technique employs a base pipe, a flow control device, and a sand control screen. The sand control screen is coupled to the flow control device and mounted over the base pipe. Additionally, the sand control screen comprises longitudinal ribs positioned along the base pipe and a filter media positioned along the longitudinal ribs. A protective shroud is mounted over the filter media and cooperates with the other components of the system to provide a simple but durable system and method for controlling fluid flow.

Abstract: A wellbore assembly comprises a tubular member adapted to be connected to other tubular members, the tubular member having a side wall defining a hollow interior and an array of openings therethrough to permit material into the interior. A screening element extends about the tubular member over the array of openings to control the material that reaches the array of openings. A stress relieving arrangement associated with the screening element permits relative movement between the screening element and the tubular member to absorb stress build-up within the screening element whether due to mechanical or temperature induced forces that would tend to distortion the screening elements. In a preferred arrangement, the wellbore assembly serves to maintain solids control in production wells while accommodating stresses and strains that occur within the tubular members in those wells.

Abstract: A well screen assembly includes an elongate base pipe, a shroud layer about the base pipe, and a mesh layer between the shroud layer and the base pipe. A portion of the mesh layer overlaps another portion of the mesh layer to form an area of overlap. A spine is positioned proximate substantially an entire length of the area of overlap, and transmits a force from the shroud layer to the mesh layer that compresses and seals the area of overlap against passage of particulate.

Abstract: Thermally crosslinked polysulfone may be made from linear polysulfone, such as polyethersulfone, in powder form blended with a powdered inorganic peroxide such as magnesium peroxide or another oxygen source, to form a mixture followed by compression inside a mold. The mixture is cured at a an elevated temperature, for instance above 325° C., for an effective period of time to form a dense object. The object is then boiled in water, optionally under pressure, to remove the salt to give a structure that is open and porous which may be used as a filtration device on a downhole tool for hydrocarbon recovery. If a powdered salt is not used, a thermally crosslinked, solid, void-free polysulfone is made which may be strong and rigid at ambient, surface temperatures, but is an elastomer at elevated downhole temperatures, and is thus suitable for use as a packer or an O-ring.

Abstract: A well screen is constructed by positioning a crimp ring encircling and over an end of a wrapped-on-pipe screen layer on a tubular base pipe. The crimp ring is plastically deformed about an outer surface of the screen layer. A bead of weld is applied to affix the crimp ring to the base pipe.

Abstract: A well screen assembly includes an elongate base pipe, a shroud layer about the base pipe, and a mesh layer between the shroud layer and the base pipe. A portion of the mesh layer overlaps another position of the mesh layer to form an area of overlap. A spine is positioned proximate substantially an entire length of the area of overlap, and transmits a force from the shroud layer to the mesh layer that compresses and seals the area of overlap against passage of particulate.

Abstract: An expandable screen includes, a body constructed of one or more strands of a shape memory material randomly distributed in a mat structure, the body is stable at a first volume and expandable to a second volume upon a change in environment.

Abstract: A screen includes, a body having a permeable material with energy stored therein configured to change the body from a first volume to a second volume, and a binder in operable communication with the body configured to retain the body in the first volume until the binder is weakened sufficiently for the energy stored within the body to overcome the binder and allow the body to change from the first volume toward the second volume.

Abstract: The subject matter of the invention is a separating device for removing sand and rock particles which is suitable as an integral component part of extraction equipment for the extraction of liquids or gases from deep wells, the separating device comprising at least one ceramic filter module (1), the filter module (1) comprising a) an annular stack (6) of brittle-hard annular discs (7), the upper side (16) of which has at least three elevations (8) uniformly distributed over the circular circumference of the discs, the discs (7) being stacked and braced in such a way that a separating gap (9) for the removal of sand and rock particles is present in each case between the individual discs (7), b) a coupling-on element (10) at the upper end and a coupling-on element (11) at the lower end of the annular stack (6), c) a clamping device (14, 15) for the axial bracing of the annular stack (6), d) an outer cage (5) for the mechanical protection of the filter module (1), e) a coupling element (12) at the upper end a

Abstract: An apparatus suitable for use in a wellbore comprises an expandable bistable device. An exemplary device has a plurality of bistable cells formed into a tubular shape. Each bistable cell comprises at least two elongated members that are connected to each other at their ends. The device is stable in a first configuration and a second configuration.