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US6722504B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Vibratory separators and screens

Assignee: Varco IP Inc
•
Filing: 2001-10-04
•
Granted: 2004-04-20
•
Expires: 2021-10-04
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Abstract

Abstract A vibratory separator with a base, vibrating apparatus, a screen container on the base, the screen container having a plurality of spaced-apart drain holes, a plurality of spaced-apart screens in the screen-container, said screens oriented vertically within the screen container, and the screens positioned so that screened fluid passes through the screens and flows from the container through the plurality of spaced-apart drain holes.

Inventors

  • 👤 David L. Schulte
  • 👤 Thomas C. Adams
  • 👤 Kenneth W. Seyffert
  • 👤 David W. Largent
  • 👤 Guy L. McClung, III
  • 👤 Jeffrey E. Walker
  • 👤 Hector M. Murray

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 21:22
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4663; B01; B01D; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D29/44; B01D29/445; B01D29/50; B01D29/52; B01D29/62; B01D29/70; B01D29/72; B01D33/00; B01D33/01; B01D33/015; B01D33/0183; B01D33/03; B01D33/0307; B01D33/0315; B01D33/033; B01D33/0346; B01D33/0376; B01D33/0384; B01D33/35; B01D33/37; B01D33/41; B01D33/70; B01D33/72; B01D33/722; B01D33/74; B01D33/745; B07B1/4618; B07B1/4654; B07B1/4672; B07B1/469; B07B1/48; B07B1/49; E; E21; E21B; E21B21/00; E21B21/06; E21B21/063; E21B21/065; B01D2201/00; B01D2201/52; B07B2201/00; B07B2201/02; B07B2201/04; B07B2230/00; B07B2230/01

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 131 words
A shale shaker for treating material including drilling fluid with solids entrained therein, the shale shaker comprising a base, vibrating apparatus, a screen container on the base, the screen container having a plurality of spaced-apart drain holes, a plurality of spaced-apart screen assemblies in the screen-container for screening solids from the drilling fluid, said screen assemblies oriented vertically within the screen container, each screen assembly having perforated spaced-apart sides and an interior space between said perforated spaced-apart sides, and the screen assemblies positioned above the plurality of spaced-apart drain holes so that screened drilling fluid is passable down from the screen assemblies into said drain holes, the screen assemblies positioned so that screened fluid passes through the screen assemblies and flows from the container through the plurality of spaced-apart drain holes.
Claim 2
Dependent Claim 131 words
A shale shaker for treating material including drilling fluid with solids entrained therein, the shale shaker comprising a base, vibrating apparatus, a screen container on the base, the screen container having a plurality of spaced-apart drain holes, a plurality of spaced-apart screen assemblies in the screen-container for screening solids from the drilling fluid, said screen assemblies oriented vertically within the screen container, each screen assembly having perforated spaced-apart sides and an interior space between said perforated spaced-apart sides, and the screen assemblies positioned above the plurality of spaced-apart drain holes so that screened drilling fluid is passable down from the screen assemblies into said drain holes, the screen assemblies positioned so that screened fluid passes through the screen assemblies and flows from the container through the plurality of spaced-apart drain holes.
Claim 3
Dependent Claim 26 words
The shale shaker of claim 1 further comprising a screen apparatus positioned beneath the screen container for screening material that flows down from the screen container.
Claim 4
Dependent Claim 53 words
The shale shaker of claim 1 further comprising the container having at least one bottom opening through which material is passable without passing through a screen of the plurality of spaced-apart screens, and a selectively movable gate apparatus for selectively opening the at least one bottom opening to allow material to pass through.
Claim 5
Dependent Claim 47 words
The shale shaker of claim 3 further comprising control apparatus including sensor apparatus for sensing an amount of material to be treated within the screen container that has not passed through the screens, the control apparatus for opening the selectively movable gate upon sensing of said amount.
Claim 6
Dependent Claim 25 words
The shale shaker of claim 3 further comprising screen apparatus positioned beneath the screen container for screening material that flows down from the screen container.
Claim 7
Dependent Claim 18 words
The shale shaker of claim 2 wherein the screen apparatus comprises a plurality of screen assemblies placed end-to-end.
Claim 8
Dependent Claim 32 words
The shale shaker of claim 1 further comprising a feed tank into which material to be treated is initially fed and from which material is supplied to the screen container for treatment.
Claim 9
Dependent Claim 21 words
The shale shaker of claim 1 further comprising a distributor apparatus for distributing a feed of material into the screen container.
Claim 10
Dependent Claim 49 words
The shale shaker of claim 1 further comprising the screen container having a plurality of screen mounting slots with a pair of mounting slots corresponding to each screen of the plurality of spaced-apart screens, each slot of each pair of mounting slots for receiving part of a screening side.
Claim 11
Dependent Claim 18 words
The shale shaker of claim 1 wherein the screen assemblies have a height of at least three inches.
Claim 12
Dependent Claim 19 words
The shale shaker separator of claim 1 wherein the screen assemblies have a height of at least four inches.
Claim 13
Dependent Claim 19 words
The shale shaker of claim 1 further comprising a lower receptacle for receiving drilling fluid from the screen container.
Claim 14
Dependent Claim 28 words
The shale shaker of claim 12 further comprising direction apparatus beneath the screen container for directing screened drilling fluid flowing from the screen container into the lower receptacle.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2007-04-20 2007-10-20 2008-04-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2011-04-20 2011-10-20 2012-04-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2015-04-20 2015-10-20 2016-04-20 $7700.00 Window Closed / Lapsed

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