Abstract:
An apparatus and method for conveying drill cuttings, the 5 apparatus comprising a vessel (1103) for receiving drill cuttings to be conveyed, a metering screw (1107) and a discharge line (1014), the metering screw (1107) for moving the drill cuttings from the vessel (1103) into said discharge line (1014), and at least one gas inlet 10 (1109) for providing positive pressure to facilitate movement of the material through the discharge line (1014) characterised in that the apparatus further comprises a pressure sensor (1109c) for sensing pressure in the discharge line (1014), and control apparatus (PD) 15 for automatically controlling the metering screw (1107) in response to a pressure sensed by the pressure sensor apparatus.
Abstract:
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).
Abstract:
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.
Abstract:
A vibratory separator comprising a basket for holding screening apparatus, at least one upper screening apparatus (56) in said basket, said at least one upper screening apparatus (56) having a fluid exit end (54), at least one lower screening apparatus (68) in said basket below said at least one upper screening apparatus characterised in that a flow diffusion apparatus (50) is mounted below said fluid exit end (54) of said at least one upper screening apparatus (56) and above said at least one lower screening apparatus (68).
Abstract:
An apparatus comprising a vibratory separator and a screen assembly (720), said vibratory separator comprising a basket and side apparatus (305, 306; 707, 708) for fixing at least a portion of a periphery of said screen assembly (720) to said basket, characterised in that means (714) is arranged within said periphery of said screen assembly (720), such that in use, said screen assembly (720) is deflected over said means upon fitting of said screen assembly (720) in said vibratory separator.
Abstract:
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.
Abstract:
A vibratory separator (120) for screening solids laden drilling mud, said vibratory separator comprising at least one screen (121, 122, 123) arranged in a basket (101) isolated from a base (105), vibratory apparatus (107) for vibrating said at least one screen and means (131, 132, 133) for adjusting the angle of said at least one screen, such that in use solids laden drilling mud forms a pool on said at least one screen, the pool having a surface (137, 138, 139), the surface having a trailing edge defining a beach characterized in that a measuring device (124, 125, 126) is arranged to measure a distance related to the position of the surface to assess the length of said beach.
Abstract:
An apparatus for selectively holding drill cuttings material in a process for moving drill cuttings, the apparatus comprising a vessel (2) having a first opening (7) through which drill cuttings material is introducible into the vessel (2) and a second opening (9) through which the drill cuttings material is passable out from the vessel (2), characterised in that the apparatus further comprises movement apparatus (21,26), the movement apparatus comprising a movement member (21) within the vessel (2) and movable adjacent the second opening (9) to facilitate passage of the drill cuttings material into the second opening.
Abstract:
A vibratory separator for screening solids laden drilling mud, said vibratory separator comprising at least one screen arranged in a basket isolated from a base, vibratory apparatus for vibrating said at least one screen and means for adjusting the angle of said at least one screen, such that in use solids laden drilling mud forms a pool on said at least one screen, the pool having a surface, the surface having a trailing edge defining a beach characterised in that a measuring device is arranged to measure a distance related to the position of the surface to assess the length of said beach.
Abstract:
A centrifuge (500) for separating feed material into solid and fluid parts, which centrifuge comprises a conveyor (540) rotatably mounted in a rotatable housing (520), the conveyor having at least one impeller (572) and the rotatable housing having a separating region comprising a pool area and a drying area between the conveyor and a rotatable housing, the arrangement being such that, in use, on entry to the centrifuge said feed material has an axial velocity substantially parallel to the longitudinal axis thereof, the feed material passing through the interior of said conveyor (540) with rotational speed being imparted thereto by said at least one impeller (572) prior to treatment in said separating region, said at least one impeller also imparting radial speed to said feed material whilst it moves with axial velocity such that feed material is spread onto the drying area adjacent the length of the at least one impeller, part of the conveyor (540) being liable to wear by feed material moving from the at least one impeller onto the drying area, characterised in that said conveyor comprises a mounting apparatus (580) for (1) providing mechanical integrity to the conveyor and (2) providing a portion to be sacrificed by said wear, the arrangement being such that, in use, the mechanical integrity of the centrifuge is substantially unimpaired by sacrifice of said portion.