Vector maximizing screen

• US 10,556,196 B2
• Filed: 04/06/2017
• Issued: 02/11/2020
• Est. Priority Date: 03/08/2013
• Status: Active Grant

• Current Assignee: National Oilwell Varco LP (NOV, Inc.)
• Original Assignee: National Oilwell Varco LP (NOV, Inc.)
• Inventors: Larson, Thomas Robert, Dufilho, Paul William
• Primary Examiner(s): Kurtz, Benjamin M
• Application Number:
  US15/480,775
• Publication Number:
  US 20170209820A1
• Time in Patent Office: 1,041 Days
• Field of Search: None
• CPC Class Codes: B01D 2201/32 Flow characteristics of the filter
• CPC Class Codes: B01D 33/0353 self-supporting
• CPC Class Codes: B01D 33/0361 Bar screens
• CPC Class Codes: B01D 33/37 in parallel connection
• CPC Class Codes: B01D 33/722 containing fixed liquid displacement elements or cores
• CPC Class Codes: B07B 1/4609 constructional details of screening surfaces or meshes
• CPC Class Codes: B07B 1/4654 Corrugated Screening surfaces
• CPC Class Codes: B07B 13/16 Feed or discharge arrangements
• CPC Class Codes: E21B 21/06 Arrangements for treating drilling fluids outside the borehole
• CPC Class Codes: E21B 21/065 Separating solids from drilling fluids

Abstract

A screen panel assembly includes a screen panel and a raised screen component disposed thereon. The raised screen component includes an inclined screen surface that defines a first plane oriented at a first angle relative to the screen panel and a wedge surface positioned at a back side of the raised screen component. The inclined screen surface has a front edge that is aligned with a top surface of the screen panel and is substantially perpendicular to a longitudinal axis of the screen panel, the first plane being substantially perpendicular to a displacement vector along which the screen panel assembly is accelerated by a vibratory separation device. The wedge surface is adapted to disrupt a flow path of a flow of a material mixture flowing in a longitudinal direction across the screen panel by redirecting the flow around opposing sides of the raised screen component.

Claims

1. A screen panel assembly, comprising:

a screen panel; and

a raised screen component disposed on said screen panel, said raised screen component comprising;

an inclined screen surface that defines a first plane that is oriented at a first angle relative to said screen panel, said inclined screen surface having a front edge that is aligned with a top surface of said screen panel and is substantially perpendicular to a longitudinal axis of said screen panel, wherein said first plane is substantially perpendicular to a displacement vector along which said screen panel assembly is accelerated by a vibratory separation device; and

a wedge surface that is positioned at a back side of said raised screen component, wherein said wedge surface is adapted to disrupt a flow path of a flow of a material mixture flowing in a longitudinal direction across said screen panel by redirecting said flow around opposing sides of said raised screen component.

2. The screen panel assembly of claim 1, wherein said inclined screen surface further comprises a plurality of second edges that extends upward from said top surface of said screen panel.

3. The screen panel assembly of claim 1, wherein said wedge surface is positioned on an upstream side of said raised screen component and said front edge of said inclined screen surface is positioned on a downstream side of said raised screen component opposite of said wedge surface.

4. The screen panel assembly of claim 1, wherein said wedge surface extends from said top surface of said screen panel to an upper point of said inclined screen surface.

5. The screen panel assembly of claim 1, further comprising a plurality of side panels supporting said inclined screen surface.

6. The screen panel assembly of claim 5, wherein each of said plurality of side panels comprises a screen surface.

7. The screen panel assembly of claim 5, wherein said wedge surface is positioned along a back edge of two of said plurality of side panels.

21. The screen panel assembly of claim 1, wherein said wedge surface of said raised screen component is adapted to disrupt said flow path of said flow of said material mixture flowing in said longitudinal direction across said screen panel by redirecting said flow around said opposing sides of said raised screen component but not over an upper end of said wedge surface.

22. A method of treating a flow of a first material mixture with the screen panel assembly of claim 1, the method comprising:

directing said flow of said first material mixture across said screen panel in said longitudinal direction; and

disrupting a flow path of said flow of said first material mixture with said wedge surface by directing said flow of said first material mixture around said opposing sides of said raised screen component but not over an upper end of said wedge surface of said raised screen component.

23. A method of treating a flow of a first material mixture with the screen panel assembly of claim 1, the method comprising:

installing said screen panel assembly in a first vibratory separation device such that said first plane defined by said inclined screen surface is substantially perpendicular to a first displacement vector along which said first vibratory separator accelerates said screen panel assembly;

directing said flow of said first material mixture across said screen panel in said longitudinal direction; and

accelerating said screen panel assembly with said first vibratory separation device along said first displacement vector.

8. A screen panel assembly, comprising:

a plurality of screen panels; and

a plurality of raised screen components disposed on each of said plurality of screen panels, each of said plurality of raised screen components comprising;

an inclined screen surface having a front edge that is aligned with a top surface of a respective one of said plurality of screen panels and a plurality of second edges that extends upward from said top surface of said respective screen panel, said front edge being substantially perpendicular to a longitudinal axis of said respective screen panel, wherein said inclined screen surface defines a first plane that is oriented at a first angle relative to said respective screen panel and is substantially perpendicular to a displacement vector along which said screen panel assembly is accelerated by a vibratory separation device; and

a wedge surface that is positioned at a back side of said raised screen component, wherein said wedge surface is adapted to disrupt a flow path of a flow of a material mixture flowing in a longitudinal direction across said respective screen panel by redirecting said flow around opposing sides of said raised screen component.

9. The screen panel assembly of claim 8, further comprising a plurality of flow gaps, wherein each of said plurality of flow gaps is disposed between adjacent pairs of said plurality of raised screen components.

10. The screen panel assembly of claim 9, wherein said plurality of flow gaps forms a substantially serpentine flow path along said screen panel assembly.

11. The screen panel assembly of claim 10, wherein a centerline of at least one of said plurality of raised screen components is substantially aligned with a respective one of said plurality of flow gaps between an adjacent pair of said plurality of raised screen components that are positioned upstream of said at least one of said plurality of raised screen components relative to a flow direction of said substantially serpentine flow path.

12. The screen panel assembly of claim 8, wherein said wedge surface is positioned on an upstream side of said raised screen component and said front edge of said inclined screen surface is positioned on a downstream side of said raised screen component opposite of said wedge surface.

13. The screen panel assembly of claim 8, wherein said wedge surface extends from said top surface of said screen panel to an upper point of said inclined screen surface.

14. The screen panel assembly of claim 8, further comprising a plurality of side panels supporting said inclined screen surface.

15. The screen panel assembly of claim 14, wherein each of said plurality of side panels comprises a screen surface.

16. The screen panel assembly of claim 14, wherein said wedge surface is positioned along a back edge of two of said plurality of side panels.

17. The screen panel assembly of claim 8, wherein each of said plurality of raised screen components comprises a frame that is coupled to a respective one of said plurality of screen panels.

18. The screen panel assembly of claim 8, wherein said screen panel assembly is a modular screen panel assembly, each of said plurality of screen panels is a modular screen sub-panel, and each of said plurality of raised screen components is a modular raised screen component, wherein each one of said plurality of modular screen sub-panels comprises a base that is adapted to be interchangeably coupled to one or more other ones of said plurality of modular screen sub-panels, and wherein each of said plurality of modular raised screen components is adapted to be interchangeably coupled to said base of each of said plurality of modular screen sub-panels.

19. The screen panel assembly of claim 18, wherein each of said plurality of modular raised screen components comprises a frame that is adapted to be removably coupled to a base of a respective one of said plurality of modular screen sub-panels.

20. The screen panel assembly of claim 8, wherein a first wedge surface of at least a first raised screen component of said plurality of raised screen components is adapted to disrupt said flow path of said flow of said material mixture flowing in said longitudinal direction across said respective screen panel by redirecting said flow around said opposing sides of said first raised screen component but not over an upper end of said first wedge surface.