This disclosure is generally drawn to systems, devices, apparatus, and/or methods related to shaker/filtration systems for drilling environments. Specifically, the disclosed systems, devices, apparatus, and/or methods relate to extended handles on screens used in shaker/filtration systems for drilling environments. In some examples, extended screen handle(s) may include a fastening portion and a handling portion. The fastening portion may be adapted to be coupled to a screen along a side of the screen, and the handling portion may be coupled to the fastening portion. The handling portion may extend above the screen and extend about 25-100% of the length of the side of the screen.
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
A wedging apparatus for a vibrating separator including an outer polygonal surface to secure a screen to the vibrating separator, wherein the outer polygonal surface extends substantially along the length of a screening surface of the vibrating separator is disclosed. A screen for a vibratory separator including a frame having a top surface and a bottom surface, and at least one filter element connected to the frame, wherein the bottom surface comprises a wedge engagement profile is also disclosed. A vibrating separator apparatus including a first side wall, a second side wall opposite the first side wall, a bottom wall connecting the first side wall and the second side wall, a first screen having a top surface and a bottom surface, at least one wedging apparatus disposed along the length of the bottom surface of the first screen is also disclosed.
A vibratory separator includes a screen frame having an upper screen surface and a plurality of openings and a first screen insert disposed in a first opening of the plurality of openings of the screen frame, the screen insert having a screen surface positioned at a first height above the supper screen surface. The vibratory separator also includes a second screen insert disposed in a second opening of the plurality of openings of the second screen frame, wherein a screen surface of the second screen insert is positioned at a second height. The second height may be different from the first height. A method of processing fluid includes providing a flow of fluid to a vibratory separator, and flowing the fluid over a screen having a first screen insert positioned at a first height.
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
B07B 1/36 - Tamis mobiles non prévus ailleurs, p. ex. à oscillations, à mouvement alternatif, à balancement, à basculement ou à vacillement à secousses ou à mouvement alternatif, dans plusieurs sens
A screen support frame comprising, a perimeter disposed in a horizontal plane, defining a vertical direction normal to said plane, said perimeter reinforced by an arrangement of reinforcing wires, said arrangement comprising a first array of substantially parallel structural wires extending between opposing regions of the perimeter in a first horizontal plane, a second array of substantially parallel structural wires extending between opposing regions of the perimeter in a second horizontal plane, said first and second arrays of structural wires being aligned at an angle to each other and in contact with each other thus forming a plurality of contact points between structural wires of the first and second array respectively, the arrangement further comprising at least one additional structural wire, said additional structural wire extending between opposing regions of the perimeter and being positioned parallel to, and substantially vertically spaced from, a wire in the first array of structural wires, and in contact with wires of the second array.
An apparatus, suitable for use as a plug for a screen frame e.g. as used in the oil and gas drilling industry, comprising a screen frame blocking surface having a first expanded screen frame blocking form, said first form being operatively compressible to form a second compressed form, said second compressed form being operatively returnable to said first expanded form.
A shaker screen including a composite frame, a removable grid attached to the composite frame, and at least one filtering element attached to the removable grid is disclosed. A method including forming a composite frame, forming a removable grid, attaching at least one filtering element to the removable grid, and attaching the removable grid to the composite frame is disclosed. Additionally, a method for rebuilding a shaker screen, the method including removing a first screen assembly from a composite frame, the screen assembly having a removable grid and at least one filtering element, and attaching a second screen assembly to the composite frame is disclosed.
A wedging apparatus for a vibrating separator including an outer polygonal surface to secure a screen to the vibrating separator, wherein the outer polygonal surface extends substantially along the length of a screening surface of the vibrating separator is disclosed. A screen for a vibratory separator including a frame having a top surface and a bottom surface, and at least one filter element connected to the frame, wherein the bottom surface comprises a wedge engagement profile is also disclosed. A vibrating separator apparatus including a first side wall, a second side wall opposite the first side wall, a bottom wall connecting the first side wall and the second side wall, a first screen having a top surface and a bottom surface, at least one wedging apparatus disposed along the length of the bottom surface of the first screen is also disclosed.
A separating screen has a rectangular body (1) one side of which has a seal for sealing against an abutting side of an adjacent screen or shaker basket. The seal is provided by an elongate sealing strip (9) of resilient material held in place on the side of the body by a retaining strip (5) which can be integrally molded with the body (1) or may be a separately formed component.
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
There is provided a screen frame adapted for use in a shaker to separate solids from liquid/solid mixture and to which woven wire mesh is to be attached, comprising a plurality of intersecting elongate members (12) defining a plurality of openings (10), or cells, wherein at least one protrusion (26) in the form of an elongate rib extends partway across each opening (10).
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
A vibratory separator screen assembly, the screen assembly including a frame having a top surface and a bottom surface having a tapered recess configured to receive a locating element disposed on the vibratory separator. The system also includes a screen element
B23P 17/04 - Opérations d'usinage non couvertes par une seule autre sous-classe ou un autre groupe de la présente sous-classe caractérisées par la nature du matériau considéré, ou par le genre de produit quelle que soit sa forme
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
11.
Peripheral sealing system for pre-tensioned screens
A method of forming a shaker screen includes forming a frame, and attaching a first sealing element to at least one side of an outer perimeter of the frame, wherein the attaching comprises aligning a first mating surface of the frame to a second mating surface of the first sealing element, and wherein the first mating surface of the frame includes an extension, and the second mating surface of the first sealing element includes a groove configured to align with the extension. A system of sealing shaker screens includes a first screen and a second screen disposed adjacent the first screen, wherein a first sealing element of a first frame and a portion of the second screen interact to provide a seal between the first screen and the second screen.
A shaker screen for attachment to a bed of a shaker includes a screen frame having at least one mesh screen attached to the top side of the screen frame, wherein the screen frame is preferentially bowed prior to attaching the mesh screen to the screen frame.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame is a rectilinear moulded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of moulded plastics material. Some of the ribs are internally reinforced by rigid metal members which extend orthogonally between hollow box-section members which define a sub-frame for reinforcing the four edge regions of the frame. The orthogonal members are secured at their ends to the sub-frame. The ends of the sub-frame members are joined at the four corners of the sub-frame. In this way not are only the edge regions of the frame reinforced internally but so also are some of the orthogonally intersecting ribs, so as thereby to produce a rigid frame for the screen. The internal reinforcement for those ribs which are to be reinforced may comprise hollow box-section metal members which may be of similar cross section to that of the sub-frame members, or the internal reinforcement for those ribs which are to be reinforced comprises metal I-beam cross section members, which typically have the same height as the height of the box-section members forming the sub frame.
There is provided a plug for repairing a sifting or filtering screen, the plug comprising a body (1) of a first material supporting an area of a second material which is more resilient than the first material, in use the area of a second material serving as a seal (2) to engage and seal against the screen in order to plug a cell aligned with a damaged area of the screen. A second plug has a body (101) formed with holes (108) to receive securing members such as screws, the holes being positioned to enable the securing members (109) to pass into the material of the sifting or filtering screen in order releasably to secure the plug in a cell aligned with a damaged area of the sifting screen.
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
B29C 73/06 - Réparation d'articles faits de matières plastiques ou de substances à l'état plastique, p. ex. d'objets façonnés ou fabriqués par utilisation de techniques couvertes par la présente sous-classe ou la sous-classe utilisant des éléments préformés utilisant des bouchons insérés dans la perforation et l'obturant
B29C 45/16 - Fabrication d'objets multicouches ou polychromes
There is provided a screen frame adapted for use in a shaker to separate solids from liquid/solid mixture and to which woven wire mesh is to be attached, comprising a plurality of intersecting elongate members (12) defining a plurality of openings (10), or cells, wherein at least one protrusion (26) in the form of an elongate rib extends partway across each opening (10).
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
B01D 33/00 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
A vibratory separator screen assembly, the screen assembly including a frame having a top surface and a bottom surface having a tapered recess configured to receive a locating element disposed on the vibratory separator. The system also includes a screen element disposed on the frame. Also, a frame for a vibratory separator screen, the frame including a first end, a second end opposite the first end, a top surface, and a bottom surface having a tapered recess configured to receive a locating element of a vibratory separator.
The invention relates to a screen frame adapted for use in a shaker to separate solids from a liquid/solid mixtureand to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of plastics ribs extending between opposing regions of the perimeter, the plastics ribs together forming an upper face and a lower face, wherein the frame further comprises at least one metal rib extending between opposing regions ofthe perimeter and extending from the upper face to the lower face, and to a shaker comprising at least one such screen frame.
The invention relates to a screen frame adapted for use in a shaker to separate solids from a liquid/solid mixture and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of ribs extending between opposing regions of the perimeter, the ribs defining an upper horizontal face to which a screen is to be attached, wherein at least one rib extends downwardly from the upper face at an angle off set to vertical, and to a shaker comprising at least one such screen frame.
The invention relates to a screen frame adapted for use in a shaker and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of plastics ribs extending between opposing regions of the perimeter, the frame being arranged such that, when fitted in a shaker to which it is adapted for, a portion of the opposing regions is clamped in place and a portion of the opposing regions is not clamped with the number of plastics ribs per unit length for the clamped portion greater than the number of plastics ribs per unit length for the unclamped portion, and to a shaker comprising at least one such screen frame.
A separating screen has a rectangular body (1) one side of which has a seal for sealing against an abutting side of an adjacent screen or shaker basket. The seal is provided by an elongate sealing strip (9) of resilient material held in place on the side of the bodyby a retaining strip (5) which can be integrally moulded with the body (1) or may be a separately formed component.
A shaker screen for attachment to a bed of a shaker includes a screen frame having at least one mesh screen attached to the top side of the screen frame, wherein the screen frame is preferentially bowed prior to attaching the mesh screen to the screen frame.
A vibratory separator including a screen frame and a screen attachment. The screen attachment including at least one vertically disposed latch on the screen frame, at least one vertically disposed catch on the screen frame, and at least one bearing surface proximate the at least one vertically disposed catch. Additionally, a method of securing adjacent screens including inserting a vertically disposed latch of a first screen into a catch of a second screen, wherein the inserting includes contacting the latch of the first screen with a bearing surface of the second screen adjacent the catch of the second screen. The method further includes forming a planar alignment of the first screen to the second screen.
There is provided a plug for repairing a sifting or filtering screen, the plug comprising a body (1) of a first material supporting an area of a second material which is more resilient than the first material, in use the area of a second material serving as a seal (2) to engage and seal against the screen in order to plug a cell aligned with a damaged area of the screen. A second plug has a body(101) formed with holes (108) to receive securing members such as screws, the holes being positioned to enable the securing members (109)to pass into the material of the sifting or filtering screen in order releasably to secure the plug in a cell aligned with a damaged area of the sifting screen.
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
B29C 73/06 - Réparation d'articles faits de matières plastiques ou de substances à l'état plastique, p. ex. d'objets façonnés ou fabriqués par utilisation de techniques couvertes par la présente sous-classe ou la sous-classe utilisant des éléments préformés utilisant des bouchons insérés dans la perforation et l'obturant
There is provided a plug (1) for repairing a sifting or filtering screen, the plug having at least one line of weakening (5) which can be ruptured whereby the plug has a plurality of possible plug sizes so that the plug is capable of plugging at least two different sizes of cell of the screen. Each possible plug size has a seal (2) extending around the complete periphery of the chosen plug size, in use the seal serving to engage and seal against the screen in order to plug a cell aligned with a damaged area of the screen.
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
In a method of and apparatus for manufacturing a filtering screen, a frame of plastics coated metal or reinforced plastics material is located in a jig and at least two sheets of wire cloths are placed over the frame and their edges gripped by pneumatically operated clamps carried by the jig. The clamps are pneumatically driven outwardly of the frame to tension each cloth in orthogonal directions. The tensioned cloths are pressed against the frame and heated in order to bond the cloths to the frame. The heated material is allowed to cool, and after completion of the bonding step the clamps a released, allowing the frame to be removed from the jig. Where necessary the cloths are trimmed back to the edges of the frame. A separate set of pneumatically operated clamps may be provided for gripping all four edges of each wire cloth layer to allow each layer to be individually tensioned.
A hookstrip screen assembly for use in a shaker is disclosed. The hookstrip screen assembly includes a filtering element and a composite frame further including a top surface, a bottom surface, and a plurality of filtering element attachment points. Also, the filtering element is attached to the plurality of filtering element attachment points. In another aspect, a method of forming a hookstrip screen assembly for use in a shaker. The method of forming a hookstrip screen assembly includes forming a wire structure, molding a composite frame incorporating the wire structure and forming a plurality of filtering element attachment points on the composite frame. The method also includes attaching a filtering element to the plurality of filtering element attachment points on the composite frame.
A shaker screen including a sealing element and a composite frame, wherein the sealing element is attached to a basal perimeter of the composite is disclosed. Furthermore, a method of forming a shaker screen including forming a sealing element, forming a composite frame, and attaching the sealing element to the composite frame, wherein the sealing element is disposed along at least one surface of a basal perimeter of the composite frame is disclosed. Also, a shaker screen attachment including a sealing element, a composite frame, and a wedge is disclosed. The shaker screen attachment further includes wherein the sealing element is attached to a basal perimeter of the composite frame, and wherein the wedge is disposed between the composite frame and a shaker basket such that the sealing element compresses against the shaker basket.
A system including a first screen having a first frame and a first sealing element attached to an outer perimeter of the first frame, and a second screen disposed adjacent the first screen, the second screen having a second frame and a second sealing element attached to an outer perimeter of the second frame, wherein the first sealing element and the second sealing element provide a seal between the first screen and the second screen is disclosed. Further, a method of forming a screen frame including forming a frame and attaching a sealing element to an outer perimeter of the frame is disclosed. Additionally, a shaker screen including a frame and a sealing element attached to an outer perimeter of the frame, wherein the sealing element is attached by one selected from thermal bonding and co-molding is disclosed.
A shaker screen including a sealing element and a composite frame, wherein the sealing element is attached to a basal perimeter of the composite is disclosed. Furthermore, a method of forming a shaker screen including forming a sealing element, forming a composite frame, and attaching the sealing element to the composite frame, wherein the sealing element is disposed along at least one surface of a basal perimeter of the composite frame is disclosed. Also, a shaker screen attachment including a sealing element, a composite frame, and a wedge is disclosed. The shaker screen attachment further includes wherein the sealing element is attached to a basal perimeter of the composite frame, and wherein the wedge is disposed between the composite frame and a shaker basket such that the sealing element compresses against the shaker basket.
A shaker screen including a composite frame, a removable grid attached to the composite frame, and at least one filtering element attached to the removable grid is disclosed. A method including forming a composite frame, forming a removable grid, attaching at least one filtering element to the removable grid, and attaching the removable grid to the composite frame is disclosed. Additionally, a method for rebuilding a shaker screen, the method including removing a first screen assembly from a composite frame, the screen assembly having a removable grid and at least one filtering element, and attaching a second screen assembly to the composite frame is disclosed.
A shaker screen including a composite frame (602), a removable grid(603) attached to the composite frame, and at least one filtering element (601) attached to the removable grid is disclosed. A method including forming a composite frame, forming a removable grid, attaching at least one filtering element to the removable grid, and attaching the removable grid to the composite frame is disclosed. Additionally, a method for rebuilding a shaker screen, the method including removing a first screen assembly from a composite frame, the screen assembly having a removable grid and at least one filtering element, and attaching a second screen assembly to the composite frame is disclosed.
machine parts, namely, screens and sieves for use with vibratory screening machines, processing machines, and replacement parts and replacement fittings for all the aforesaid goods
(1) Screens and sieves all for use in vibratory screening (sifting) apparatus and in apparatus for processing oil well drilling fluids, all constructed from metal; screens and sieves all for use in vibratory screening (sifting) apparatus and in apparatus for processing oil well drilling fluids, all constructed from reinforced plastics material and wire mesh; parts and fittings for all the aforesaid, including parts and fittings constructed from plastics material or GRP and wire mesh, by which such screens and sieves can be repaired.
SCREENS AND SIEVES ALL FOR VIBRATORY SCREENING OR SIFTING APPARATUS AND IN APPARATUS FOR PROCESSING OIL WELL DRILLING FLUIDS, ALL CONSTRUCTED FROM METAL; SCREENS AND SIEVES ALL FOR USE IN VIBRATORY SCREENING OR SIFTING APPARATUS AND IN APPARATUS FOR PROCESSING OIL WELL DRILLING FLUIDS, ALL CONSTRUCTED FROM REINFORCED PLASTIC MATERIAL AND WIRE MESH; PARTS AND FITTINGS FOR ALL OF THE AFORESAID, NAMELY, DEVICES BY WHICH DAMAGED REGIONS OF SUCH SCREENS AND SIEVES CAN BE REPAIRED, AND DEVICES CONSTRUCTED FROM PLASTIC MATERIAL OR GRIP AND WIRE MESH, BY WHICH SUCH SCREENS AND SIEVES CAN BE REPAIRED
Screens and sieves all for use in vibratory screening (sifting) apparatus and in apparatus for processing oil well drilling fluids, all constructed from metal; screens and sieves all for use in vibratory screening (sifting) apparatus and in apparatus for processing oil well drilling fluids; all constructed from reinforced plastics material and wire mesh; parts and fittings for all the aforesaid, especially devices by which damaged regions of such screens and sieves can be repaired, in particular devices constructed from plastics material or GRP and wire mesh, by which such screens and sieves can be repaired.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
07 - Machines et machines-outils
20 - Meubles et produits décoratifs
Produits et services
(1) Screens and sieves, all for use with vibratory screening (sifting) apparatus or processing apparatus in the well drilling industry; parts and fittings for all the aforesaid goods. Screens and sieves, all for use with vibratory screening (sifting) apparatus or processing apparatus, principally formed from plastics or glass reinforced plastics material for use in the well drilling industry; parts and fittings for all the aforesaid goods.
Screens and sieves, all for use on oil well drilling rigs, all for use with vibratory screening (sifting) apparatus and processing apparatus; parts and fittings for all the aforesaid goods; all included in Class 7. Screens and sieves, all for use on oil well drilling rigs, all for use with vibratory screening (sifting) apparatus or processing apparatus, principally formed from plastics or glass reinforced plastics materials; parts and fittings for all the aforesaid goods; all included in Class 20.
The invention relates to a screen frame adapted for use in a shaker to separate solids from a liquid/solid mixture and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of plastics ribs extending between opposing regions of the perimeter, the plastics ribs together forming an upper face and a lower face, wherein the frame further comprises at least one metal rib extending between opposing regions of the perimeter and extending from the upper face to the lower face, and to a shaker comprising at least one such screen frame.
A shaker screen for attachment to a bed of a shaker includes a screen frame having at least one mesh screen attached to the top side of the screen frame, wherein the screen frame is preferentially bowed prior to attaching the mesh screen to the screen frame.
A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame is a rectilinear moulded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of moulded plastics material. Some of the ribs are internally reinforced by rigid metal members which extend orthogonally between hollow box-section members which define a sub-frame for reinforcing the four edge regions of the frame. The ends of the sub-frame members are joined at the four corners of the sub-frame. In this way not are only the edge regions of the frame reinforced internally but so also are some of the orthogonally intersecting ribs, so as thereby to produce a rigid frame for the screen. The internal reinforcement for those ribs which are to be reinforced may comprise hollow box-section metal members which may be of similar cross section to that of the sub-frame members, or the internal reinforcement for those ribs which are to be reinforced comprises metal I-beam cross section members, which typically have the same height as the height of the box-section members forming the sub frame.
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
A screen support frame comprising, a perimeter disposed in a horizontal plane, defining a vertical direction normal to said plane, said perimeter reinforced by an arrangement of reinforcing wires, said arrangement comprising a first array of substantially parallel structural wires extending between opposing regions of the perimeter in a first horizontal plane, a second array of substantially parallel structural wires extending between opposing regions of the perimeter in a second horizontal plane, said first and second arrays of structural wires being aligned at an angle to each other and in contact with each other thus forming a plurality of contact points between structural wires of the first and second array respectively, the arrangement further comprising at least one additional structural wire, said additional structural wire extending between opposing regions of the perimeter and being positioned parallel to, and substantially vertically spaced from, a wire in the first array of structural wires, and in contact with wires of the second array.
A shaker screen including a sealing element and a composite frame, wherein the sealing element is attached to a basal perimeter of the composite is disclosed. Furthermore, a method of forming a shaker screen including forming a sealing element, forming a composite frame, and attaching the sealing element to the composite frame, wherein the sealing element is disposed along at least one surface of a basal perimeter of the composite frame is disclosed. Also, a shaker screen attachment including a sealing element, a composite frame, and a wedge is disclosed. The shaker screen attachment further includes wherein the sealing element is attached to a basal perimeter of the composite frame, and wherein the wedge is disposed between the composite frame and a shaker basket such that the sealing element compresses against the shaker basket.
A vibratory separator including a screen frame and a screen attachment. The screen attachment including at least one vertically disposed latch on the screen frame, at least one vertically disposed catch on the screen frame, and at least one bearing surface proximate the at least one vertically disposed catch. Additionally, a method of securing adjacent screens including inserting a vertically disposed latch of a first screen into a catch of a second screen, wherein the inserting includes contacting the latch of the first screen with a bearing surface of the second screen adjacent the catch of the second screen. The method further includes forming a planar alignment of the first screen to the second screen.
A shaker screen for attachment to a bed of a shaker includes a screen frame having at least one mesh screen at-tached to the top side of the screen frame, wherein the screen frame is preferentially bowed prior to attaching the mesh screen to the screen frame.
A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from downhole when drilling for oil or gas. The frame comprises a rectilinear moulded plastic frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of interesting ribs also of moulded plastics material. Some of the ribs are internally reinforced by a structure comprising two spaced apart layers of orthogonal intersecting spaced apart wires, running parallel to the length and breadth of the rectilinear shape of the frame within the ribs to increase their rigidity. The edge regions of the frame are reinforced internally by metal box-section members joined at their four corners and defining perimeter reinforcement, and the ends of the wires are secured to the box-section members. The latter are encapsulated in the same plastics material from which the orthogonal array of intersecting ribs are moulded. Alternate ribs are not reinforced with wires, and the non-reinforced ribs only extend partway between the upper and lower faces of the frame. Lengths of wire bent to form spacers and adapted to fit between upper and lower wires of the rib reinforcing structure, are joined to the upper and lower wires so as to extend therebetween and maintain the desired separation of the two layers of wires during the plastics encapsulation/moulding process.
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
A shaker screen including a composite frame, a removable grid attached to the composite frame, and at least one filtering element attached to the removable grid is disclosed. A method including forming a composite frame, forming a removable grid, attaching at least one filtering element to the removable grid, and attaching the removable grid to the composite frame is disclosed. Additionally, a method for rebuilding a shaker screen, the method including removing a first screen assembly from a composite frame, the screen assembly having a removable grid and at least one filtering element, and attaching a second screen assembly to the composite frame is disclosed.
B01D 33/03 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons avec des éléments filtrants vibrants
B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis
E21B 21/06 - Dispositions pour traiter les fluides de forage à l'extérieur du trou de forage
A frame over which woven wire mesh is to be stretched and secured to form a sieving screen and which can be used to screen solids from drilling mud recovered from down-hole when drilling for oil or gas. The frame is a rectilinear moulded plastics frame having edge regions by which it is secured in place in a shaker. Within the frame is a plurality of rectilinear windows formed by an orthogonal array of intersecting ribs also of moulded plastics material. Some of the ribs are internally reinforced by rigid metal members which extend orthogonally between hollow box-section members which define a sub- frame for reinforcing the four edge regions of the frame. The ends of the sub-frame members are joined at the four corners of the sub-frame. In this way not are only the edge regions of the frame reinforced internally but so also are some of the orthogonally intersecting ribs, so as thereby to produce a rigid frame for the screen. The internal reinforcement for those ribs which are to be reinforced may comprise hollow box-section metal members which may be of similar cross section to that of the sub-frame members, or the internal reinforcement for those ribs which are to be reinforced comprises metal I-beam cross section members, which typically have the same- height as the height of the box-section members forming the sub frame.
