摘要:
A method and a vibratory separator for separating solids from a solids laden drilling fluid, the method comprising the steps of introducing solids laden drilling fluid into a vibratory separator having a basket, at least one screen and a mechanism for vibrating said at least one screen, characterised in that at least one dam is arranged to separate said basket into a first and a second distinct spaces said solids laden drilling fluid forming a first pool on one side of said at least one dam and a second pool on the other side of said at least one dam, drilling fluid flowing through the at least one screen from the first and second pools, leaving solids on the surface of the screen, which travel to a ditch or pit to be further processed.
摘要:
A screen for use in a shale shaker, which screen (900; 920) comprises: (a) a support panel formed with a series of alternating substantially parallel ridges and channels, wherein at least the top of one of said ridges is substantially flat and is provided with at least one elongate opening which is wholly contained within said ridge; and (b) at least a first layer of mesh bonded to said support member, the arrangement being such that, in use, if the mesh covering said elongate opening in said ridge is punctured said mesh overlying said elongate opening can be removed and the open cell formed thereby fitted with a plug. A frame for supporting a screen, which frame comprises a plurality of spaced-apart strips (502) secured to and between spaced-apart sides (504), characterised in that at least one of said strips (502) is provided with at least one projection (553) to be received in a corrugation in a corrugated screen. A panel for a screen, said panel comprising a plurality of groups of perforations, each group comprising six generally equal triangular apertures (513, 514, 515) arranged with their apices facing a central portion (550), wherein the apices of two (514, 515) opposing ones of said triangular apparatus are spaced apart further than the apices of opposed ones of the remaining triangular apparatus (513, 513; 513, 513).
摘要:
An apparatus for making a screen unit for a screen assembly, the apparatus comprising a laminating station (310) having at least two rollers forming a nip through which layers of mesh are laminated and a finishing station characterised in that said finishing station comprises a bed (362) and a cutting device (363) for cutting said screen (360) into discrete screen units (360a).
摘要:
A method for mounting a screen assembly to a screen mounting structure of a vibratory separator to effectively seal the screen assembly in place, the method in certain aspects including locating the screen assembly on a screen mounting structure of the separator, positioning the screen assembly so that crossmembers (805, 806) of a four-sided generally rectangular support (800) of the screen assembly are either all parallel to or are all transverse to a direction of material flowing across the screen assembly, forcing two sides of the support of the screen assembly down with a crowning apparatus to effect crowning of the screen assembly, the support sufficiently flexible so that two sides thereof other than the two forced-down sides sealingly contact a surface of the screen mounting structure along substantially all of their length.
摘要:
A method for screening with a screen assembly (10), the screen assembly comprising screening material having non-flat areas of screening material therein, the non-flat areas of screening material between lines of glue (13) gluing together a plurality of layers (11, 12) of screening material, the plurality of glued-together layers of screening material secured to a frame, the method comprising the steps of mounting the screen assembly (10) on a vibratory separator, the vibratory separator located in an environment at an ambient temperature, vibrating the screen assembly with the vibratory separator for a period of time, feeding material to be treated onto the screen assembly, the material to be treated at a material temperature above the ambient temperature, the period of time of such a temporal length and the material temperature of such a temperature to effect flattening of the non-flat areas of screening material.
摘要:
A screen assembly for a vibratory separator, the screen assembly comprising at least one layer of screening material (54a) and a screen support (51) for supporting said screening material, characterised in that, said screen support (51) comprises a multiplicity of trusses and girders (53,54). The invention also relates to a vibratory separator having a screen assembly, of the invention fitted therein for separating solids from a solids laden drilling mud.
摘要:
Methods for making frames for screen assemblies for vibratory separators, and screen assemblies with such frames, the methods, in certain aspects, including making a frame support for a screen assembly for a vibratory separator ( e.g. but not limited to with robotic welding apparatus), moving the frame support to cleaning apparatus to clean the frame support, heating the frame support, moving the heated frame support to coating apparatus, coating the frame support in the coating apparatus with protective material, allowing the coated frame support to cool so that the protective material sets, moving of the frame support in one aspect done by mechanical movement apparatus; and, in certain aspects, adding screening material to the frame to produce a screen assembly.
摘要:
A shale shaker (10) or vibratory separator which, in one aspect, has a base (22), vibration isolation apparatus on the base (22), a basket (12), mount apparatus (16) for mounting the basket on the base (22), and at least one of the base (22), basket (12), and the mount apparatus (16) made of, encased in, or coated with composite material which, in certain aspects, is all or part flexible composite material; and methods of using such separators and shakers.
摘要:
A shale shaker comprising a screen assembly (940) , the screen assembly comprising a support (942) and at least one layer of screening material (950) , the screen support (942) having a periphery and an underside characterised in that a spacer (970-973) is arranged on the underside of the screen support (942) and wherein the shale shaker comprises fixing apparatus for fixing the periphery of the screen assembly (940) and a structural member underneath the screen assembly, the spacer (970-973) arranged between the screen support (940) and the structural member.
摘要:
A method for mounting a screen assembly to a screen mounting structure of a vibratory separator to effectively seal the screen assembly in place, the method in certain aspects including locating the screen assembly on a screen mounting structure of the separator, positioning the screen assembly so that crossmembers of a four-sided generally rectangular support of the screen assembly are either all parallel to or are all transverse to a direction of material flowing across the screen assembly, forcing two sides of the support of the screen assembly down with a crowning apparatus to effect crowning of the screen assembly, the support sufficiently flexible so that two sides thereof other than the two forced-down sides sealingly contact a surface of the screen mounting structure along substantially all of their length.