Technique and apparatus to deploy a perforating gun and sand screen in a well

• US 8,151,882 B2
• Filed: 09/01/2005
• Issued: 04/10/2012
• Est. Priority Date: 09/01/2005
• Status: Expired due to Fees

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Grigar, Larry L., Hromas, Joe C.
• Primary Examiner(s): Neuder, William P
• Application Number:
  US11/162,216
• Publication Number:
  US 20070044964A1
• Time in Patent Office: 2,413 Days
• Field of Search: 166/278, 166/298, 166/51
• US Class Current: 166/278
• CPC Class Codes: E21B 43/08 Screens or liners expandable screens or liners E21B43/108
• CPC Class Codes: E21B 43/117 Shaped-charge perforators E21B43/118 takes precedence
• CPC Class Codes: E21B 43/119 Details, e.g. for locating perforating place or direction

Abstract

A system that is usable with a well includes tubular body, at least one perforating charge that is disposed on the tubular body and at least one screen section that is disposed on the tubular body. The perforating charge(s) and the screen sectional(s) are adapted to be run downhole in a single trip into the well with the tubular body.

Claims

1. A method usable with a well, comprising:

in a single trip into the well, perforating the well and installing a sand screen in the well, comprising running an assembly comprising a tubular member and the sand screen into the well;

providing fins on the assembly, each of the fins comprising a continuous segment that longitudinally extends along a longitudinal axis of the tubular member and radially extends away from the tubular member by a substantially constant radial offset along the entire length of the segment;

disposing perforating charges in pockets formed in a distal end of at least one of the fins such that the segment of each fin having pockets formed therein contains multiple perforating charges; and

circumferentially disposing the sand screen in separate segments about a longitudinal axis of the assembly, each segment circumferentially extending about the longitudinal axis between two of the fins.

2. The method of claim 1, further comprising:

using the fin to protect at least part of the sand screen.

3. The method of claim 1, wherein the perforating and installing comprises running the assembly inside a casing string.

4. The method of claim 1, wherein the perforating comprises underbalanced perforating.

5. The method of claim 1, wherein the perforating and installing comprises:

firing the perforating charges, and

subsequently gravel packing near the sand screen.

6. The method of claim 1, further comprising:

extending a detonating cord around a longitudinal axis of a perforating gun to transfer charges to multiple sets of perforating charges of the perforating gun.

7. The method of claim 1, further comprising:

radially extending the fins beyond the separated segments to form pockets to receive a gravel packing substrate.

8. The method of claim 1, wherein the segment of each fin includes pockets formed therein to receive the perforating charges.

9. The method of claim 1, further comprising:

exposing the perforating charges to a downhole environment prior to the firing of the perforating charges.

10. The method of claim 9, wherein the perforating charges comprise encapsulated shaped charges, each of the encapsulated shaped charges having an associated charge cap having an outer surface, and the exposing comprises exposing the outer surface of each encapsulated shaped charge to the downhole environment.

11. The method of claim 9, further comprising:

exposing the sandscreen to the downhole environment prior to the firing of the perforating charges.

12. The method of claim 1, further comprising:

installing the assembly in a casing.

13. A system usable with a well, comprising:

a tubular body;

fins, each fin comprising a continuous segment to longitudinally extend along the longitudinal axis of the tubular body and radially extend away from the tubular body by a substantially constant radial offset along the entire length of the segment;

a plurality of pockets formed in a distal end of at least one of the fins along the longitudinal axis thereof;

perforating charges disposed in the plurality of pockets of the fins, such that each segment of each fin having pockets formed therein contains multiple perforating charges; and

a sand screen attached to the tubular body and circumferentially disposed about the longitudinal axis, the sand screen comprising separate segments and each of the segments circumferentially extending about the longitudinal axis between two of the fins,

wherein the perforating charges and the sand screen are adapted to be run downhole in a single trip into the well with the tubular body.

14. The system of claim 13, wherein the tubular body comprises openings to establish fluid communication between the sand screen and a passageway of the tubular body.

15. The system of claim 13, wherein the perforating charges are disposed in pockets in the fins.

16. The system of claim 13, wherein the fin is adapted to protect the sand screen.

17. The system of claim 13, further comprising:

a ballistic junction to communicate a detonation wave around a longitudinal axis of a perforating gun to transfer charges to the multiple perforating charges.

18. The system of claim 13, wherein the fins extend radially beyond the separate segments to form pockets to receive gravel packing subs.

19. The system of claim 13, wherein the segment of each fin includes pockets formed therein to receive the perforating charges.

20. The system of claim 13, wherein the perforating charges, sand screen and fins are exposed to the same downhole environment prior to the firing of the perforating charges.

21. The system of claim 20, wherein the perforating charges comprise encapsulated shaped charges, each of the encapsulated shaped charges having an associated charge cap having an outer surface, and the outer surface of each encapsulated shaped charge is exposed to the downhole environment prior to the firing of the perforating charges.

22. The system of claim 13, further comprising:

a casing,

wherein the fins, the perforating charges, the sand screen and the tubular body are adapted to form an assembly be disposed downhole inside the casing.