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Screen Assembly for a Shale Shaker

a technology of shale shaker and assembly, which is applied in the direction of screening, moving filter element filters, and screening, etc., can solve the problems of time-consuming workshop process, and achieve the effect of increasing the overall and increasing the rigidity of the panel

Inactive Publication Date: 2009-09-10
NAT OILWELL VARCO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]The present invention also attempts to provide a panel for a screen, which will increase the life of layers of screening material arranged thereon.
[0032]Preferably, the support structure comprises a plurality of support ribs on which, in use the panel is pushed on to. Advantageously, the support structure has a crowned profile and the panel is pushed down over the support structure by a clamping mechanism at an outer perimeter of the panel. Preferably, the panel is semi-flexible, preferably such that the panel may change shape when a force is applied to it by the clamping mechanism of the shale shaker. The clamping mechanism may provide a tonne of force over the side edges of the screen assemblies arranged in the shale shaker, which may cover 3 to 12 m over 1 to 2 cm in width through a pneumatic hose. Advantageously, the panel is flexible, wherein it is easy to apply the layers of screening material to the panel and a tension in the layers of screening material is held by the panel, advantageously, such that the panel does not bend under then tension in the layers of screening material. Advantageously, wherein it is easy to transport the panel with at least one layer of screening material arranged thereon.

Problems solved by technology

However, this is a time consuming process conducted in a workshop.

Method used

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  • Screen Assembly for a Shale Shaker
  • Screen Assembly for a Shale Shaker
  • Screen Assembly for a Shale Shaker

Examples

Experimental program
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Embodiment Construction

[0062]Referring to FIG. 1, there is shown a screen assembly, generally identified by reference numeral 100. The screen assembly 100 comprises a panel 101, a support structure 102 and a pull down member 103. In use, the panel 101 would have at least one layer of screening material adhered or otherwise attached thereto. Typically, each layer of screening material comprises a layer of wire mesh. Typically, the panel 101 would have three layers of screening material lying one over the other, the lowermost layer of screening having larger openings and larger wires. In use, the screen assembly 100 is arranged in clamping rails 104 and 105 of a shale shaker.

[0063]Referring to FIGS. 1A, 1D and 1G, the panel 101 is made from a 1.5 mm mild steel plate. The panel 101 comprises an area 106 provided with a plurality of apertures, a left side portion 107 provided with no apertures and a right side portion 108 provided with no apertures. The plurality of apertures in area 106 comprises a plurality...

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Abstract

A screen assembly for a shale shaker comprising a panel (500) and a support structure (600), the panel (500) having an area provided with a multiplicity of apertures and at least one layer of screening material arranged over the multiplicity of apertures, wherein said panel (500) is removable from said support structure (600).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This Application is a division of U.S. patent application Ser. No. 10 / 530387 filed on Oct. 16, 2003 and incorporated by reference herein for all it contains.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a screen assembly, for a shale shaker, a panel for a screen assembly, a support structure for a screen assembly, a shale shaker comprising a screen assembly, a shale shaker comprising a support structure and a method for fitting a screen assembly into a shale shaker.[0004]2. Description of the Related Art[0005]In the drilling of a borehole in the construction of an oil or gas well, a drill bit is arranged on the end of a drill string and is rotated to bore the borehole. A drilling fluid known as “drilling mud” is pumped through the drill string to the drill bit to lubricate the drill bit. The drilling mud is also used to carry the cuttings produced by the drill bit and other solids to the ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B07B1/46B01D33/03B07B1/48B07B1/49
CPCB01D33/0376B07B1/46B07B1/48B07B1/469B07B1/4663B01D33/03B07B1/4645
Inventor BURNETT, GEORGE ALEXANDERSEYFFERT, KENNETH WAYNE
Owner NAT OILWELL VARCO LP
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