Shale shaker with vertical screens

• US 20100181265A1
• Filed: 01/20/2009
• Published: 07/22/2010
• Est. Priority Date: 01/20/2009
• Status: Abandoned Application

• Current Assignee: National Oilwell Varco LP (NOV, Inc.)
• Original Assignee: National Oilwell Varco LP (NOV, Inc.)
• Inventors: Larson, Thomas, Schulte, David L. JR., Dufilho, Paul
• Application Number:
  US12/321,358
• Publication Number:
  US 20100181265A1
• Time in Patent Office: Days
• US Class Current: 210/785
• CPC Class Codes: B01D 33/0315 arranged for inward flow filtration
• CPC Class Codes: B07B 1/28 Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
• CPC Class Codes: B07B 1/4609 constructional details of screening surfaces or meshes
• CPC Class Codes: B07B 2230/01 Wet separation

Abstract

A screen assembly for a vibratory separator, the screen assembly vertically-mountable and further including a support, at least two screening faces on the support, said at least two screening faces each including screening material through which fluid is flowable from outside the screen assembly into a space within the screen assembly and interiorly of the at least two screening faces, and the support including an exit from which fluid may exit from within the screen assembly; shakers with at least one such screen assembly; and methods of using such a screen assembly in a vibratory separator. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 CFR 1.72(b).

Claims

1. A screen assembly for a vibratory separator, the screen assembly vertically-mountable and further comprising

a support, the support vertically mountable in a vibratory separator,

at least two screening face on the support, said at least two screening faces each including screening material through which fluid is flowable from outside the screen assembly into a space within the screen assembly and interiorly of the at least two screening faces, and

the support including an exit from which fluid flowing through the at least two screening faces exits from within the screen assembly.

2. The screen assembly of claim 1 wherein

the at least two screening faces are spaced-apart screening faces.

3. The screen assembly of claim 2 wherein each screening face is on a side of the screen assembly.

4. The screen assembly of claim 1 wherein the exit is at a bottom of the screen assembly.

5. The screen assembly of claim 1 wherein the exit is at a side of the screen assembly.

6. The screen assembly of claim 1 wherein the exit is at a top of the screen assembly.

7. The screen assembly of claim 1 wherein

the support has a bottom tubular part with holes therethrough comprising the exit.

8. The screen assembly of claim 1 wherein

each screening face includes a perforated plate with plate holes therein for conducting fluid down to the exit.

9. The screen assembly of claim 8 wherein the plate holes includes a plurality of vertical holes within each plate extending from a top of the plate to the bottom of the plate.

10. The screen assembly of claim 8 wherein the plate holes include a plurality of holes through each plate from one side thereof to the other.

11. A screen assembly for a vibratory separator, the screen assembly vertically-mountable and further comprising

a support, the support vertically mountable in a vibratory separator,

at least two spaced-apart screening faces on the support, said at least two screening faces each including screening material through which fluid is flowable from outside the screen assembly into a space within the screen assembly and interiorly of the at least two screening faces,

the support including an exit from which fluid flowing through the at least two screening faces exits from within the screen assembly,

wherein each screening face is on a side of the screen assembly,

wherein the exit is at a bottom of the screen assembly, and

wherein the support has a bottom tubular part with holes therethrough comprising the exit.

12. A shaker for separating components of feed material fed to the shaker, the shaker comprising

a basket for supporting screening apparatus for treating feed material,

vibratory apparatus connected to the basket for vibrating the basket and the screening apparatus,

the screening apparatus comprising at least one screen assembly, the at least one screen assembly mounted vertically in the basket, the at least one screen assembly comprising a support, the support vertically mountable in a vibratory separator, at least two screening faces on the support, said at least two screening faces each including screening material through which fluid is flowable from outside the screen assembly into a space within the screen assembly and interiorly of the at least two screening faces, and the support including an exit from which fluid flowing through the at least two screening faces exits from within the screen assembly, and

a lower receptacle for receiving material from the screening apparatus.

13. The shaker of claim 12 wherein the at least one screen assembly is a plurality of spaced-apart screen assemblies.

14. The shaker of claim 12 wherein the feed material is drilling fluid with solids therein.

15. The shaker of claim 12 wherein each screening face is on a side of the screen assembly.

16. The shaker of claim 12 wherein the exit of the screen assembly is at a bottom of the screen assembly.

17. The shaker of claim 12 wherein the support of the screen assembly has a bottom tubular part with holes therethrough comprising the exit.

18. The shaker of claim 12 further comprising

apparatus in communication with the exit for sucking material through the exit.

19. The shaker of claim 12 wherein

each screening face includes a perforated plate with plate holes therein for conducting fluid down to the exit.

20. A method for processing material with a vibratory separator, the method comprising

introducing feed material to a vibratory separator, the vibratory separator comprising a basket for supporting screening apparatus for treating feed material, vibratory apparatus connected to the basket for vibrating the basket and the screening apparatus, the screening apparatus comprising at least one screen assembly, the at least one screen assembly mounted vertically in the basket, the at least one screen assembly comprising a support, the support vertically mountable in a vibratory separator, at least two screening faces on the support, said at least two screening faces each including screening material through which fluid is flowable from outside the screen assembly into a space within the screen assembly and interiorly of the at least two screening faces, and the support including an exit from which fluid flowing through the at least two screening faces exits from within the screen assembly, and a lower receptacle for receiving material from the screening apparatus, the feed material including fluid and solids,

separating fluid from the feed material with the screening apparatus, and

separated fluid flowing from within the screening apparatus to the lower receptacle.