Pocket for a downhole tool string component

• US 7,497,254 B2
• Filed: 03/21/2007
• Issued: 03/03/2009
• Est. Priority Date: 03/21/2007
• Status: Expired due to Fees

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: NovaDrill, Inc. (SLB)
• Inventors: Turner, Paula, Hall, David R., Wise, Daryl, Nelson, Nathan
• Primary Examiner(s): Neuder; William P
• Application Number:
  US11/688,952
• Publication Number:
  US 20080230277A1
• Time in Patent Office: 713 Days
• Field of Search: 166/65.1, 166/242.6, 175/320
• US Class Current: 166/65.1
• CPC Class Codes: E21B 47/01 Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like

Abstract

A downhole tool string component, having a tubular body with an outer diameter. A first, second, and third flange are disposed around the outer diameter of the tubular body at different axial locations. A first sleeve is disposed around the tubular body such that opposite ends of the first sleeve fit around at least a portion of the first and second flanges, forming a first sealed pocket around the outer diameter of the tubular body. A second sleeve is disposed around the tubular body such that opposite ends of the second sleeve fit around at least a portion of the second and third flanges, forming a second sealed pocket around the outer diameter of the tubular body.

Claims

1. A downhole tool string component, comprising:

a tubular body with an outer diameter;

a first, second, and third flange are disposed around the outer diameter of the tubular body at different axial locations;

a first sleeve disposed around the tubular body such that opposite ends of the first sleeve connect to at least a portion of the first and second flanges;

a second sleeve disposed around the tubular body such that opposite ends of the second sleeve connect to at least a portion of the second and third flanges; and

at least one sleeve forming a pocket around the outer diameter of the tubular body;

wherein an end of at least one sleeve fits around a portion of at least one flange.

2. The component of claim 1, wherein the first pocket is electrically connected to a second pocket formed around the outer diameter of the tubular body by the second sleeve.

3. The component of claim 2, wherein the pockets are electrically connected through an electrically conductive conduit disposed within the second flange.

4. The component of claim 1, wherein at least one flange and at least one sleeve are a single element.

5. The component of claim 1, wherein the first and second sleeves are interlocked.

6. The component of claim 5, wherein the sleeves are interlocked with a castle cut connection.

7. The component of claim 1, wherein an electronics housing is disposed within at least one of the pockets.

8. The component of claim 7, wherein the electronics housing is interlocked with at least one flange.

9. The component of claim 7, wherein the electronics housing is interlocked with the tubular body.

10. The component of claim 1, wherein at least one pocket is sealed.

11. The component of claim 1, wherein the flanges comprise o-rings disposed along an outer diameter of the flanges.

12. The component of claim 1, wherein the flanges comprise o-rings disposed along an inner diameter of the flanges.

13. The component of claim 1, wherein the component also comprises a collar disposed around the tubular body at an end and adapted to be a primary shoulder of the component.

14. The component of claim 1, wherein at least one sleeve is a stabilizer adapted to stabilize the component in a well bore.

15. The component of claim 1, wherein the first sleeve abuts a shoulder formed in the outer diameter of the downhole component.

16. The component of claim 1, wherein at least one sleeve is made of a non-magnetic material.

17. The component of claim 1, wherein the component comprises a third sleeve disposed around the tubular body such that opposite ends of the third sleeve connect to at least a portion of the third flange and a fourth flange, forming another pocket around the outer diameter of the tubular body.