Vector maximizing screen

• US 9,643,111 B2
• Filed: 03/07/2014
• Issued: 05/09/2017
• 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:
  US14/200,515
• Publication Number:
  US 20140251894A1
• Time in Patent Office: 1,159 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 one or more raised screen components, wherein at least one of the raised screen components is disposed on the screen panel. Furthermore, each of the one or more raised screen components includes at least one inclined screen surface that defines a first plane that is oriented at a first angle relative to said screen panel. Additionally, the first plane is substantially aligned with a second plane that is oriented at a second angle relative to a third plane that is perpendicular to a displacement vector along which the screen panel assembly is accelerated by a vibratory separation device.

Claims

1. A screen panel assembly, comprising:

a screen panel; and

one or more raised screen components disposed on said screen panel, each of said one or more raised screen components 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, wherein said wedge surface extends vertically from and is substantially perpendicular to said top surface of said screen panel.

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 screen panel comprises a plurality of said one or more raised screen components.

4. 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.

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

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

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

8. The screen panel assembly of claim 6, wherein said wedge surface is positioned along a back edge of two of said plurality of side panels.

9. 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, wherein said wedge surface extends vertically from and is substantially perpendicular to said top surface of said screen panel.

10. The screen panel assembly of claim 9, wherein each of said plurality of screen panels comprises at least two of said plurality of raised screen components.

11. The screen panel assembly of claim 9, 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.

12. The screen panel assembly of claim 11, wherein said plurality of flow gaps forms a substantially serpentine flow path along said screen panel assembly.

13. The screen panel assembly of claim 12, 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.

14. The screen panel assembly of claim 9, 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.

15. The screen panel assembly of claim 14, wherein each of said frames supports one of said inclined screen surfaces.

16. The screen panel assembly of claim 14, wherein said frame comprises said wedge surface.

17. The screen panel assembly of claim 9, 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.

18. The modular screen panel assembly of claim 17, 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.

19. The screen panel assembly of claim 9, 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.

20. The screen panel assembly of claim 9, wherein said wedge surface extends vertically from said top surface of said screen panel to an upper point of said inclined screen surface.

21. The screen panel assembly of claim 9, further comprising a plurality of side panels supporting said inclined screen surface.

22. The screen panel assembly of claim 21, wherein each of said plurality of side panels comprises a screen surface.

23. The screen panel assembly of claim 21, wherein said wedge surface is positioned along a back edge of two of said plurality of side panels.