SHOCK ABSORPTION FOR A LOGGING INSTRUMENT

• US 20090014166A1
• Filed: 07/09/2007
• Published: 01/15/2009
• Est. Priority Date: 07/09/2007
• Status: Abandoned Application

• Current Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Original Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Inventors: Cheeseborough, John
• Application Number:
  US11/774,691
• Publication Number:
  US 20090014166A1
• Time in Patent Office: Days
• US Class Current: 166/65.100
• CPC Class Codes: E21B 47/017 Protecting measuring instruments
• CPC Class Codes: G01V 11/002 Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant means for transmitting well survey signals E21B47/12; signal transmission systems in general G08C; transmission in general H04B

Abstract

A logging instrument including an instrument housing; an instrument assembly; and shock absorbing material disposed between the instrument housing and the instrument assembly to provide for absorbing shock to the instrument assembly.

Claims

1. A downhole instrument comprising:

housing;

an instrument assembly; and

shock absorbing material removably disposed between the housing and the instrument assembly for substantially an entire length of the instrument assembly.

2. The instrument as in claim 1, wherein the housing comprises a brace to support the shock absorbing material.

3. The instrument as in claim 2, wherein the housing comprises at least one of a shape, a bracket, and a component to provide the brace.

4. The instrument as in claim 1, wherein the instrument assembly comprises a side rail.

5. The instrument as in claim 4, wherein the side rail comprises a texture on a surface to prevent slipping of the assembly with respect to the shock absorbing material.

6. The instrument as in claim 4, wherein the side rail comprises an edge of about ninety degrees or less to prevent slipping of the assembly with respect to the shock absorbing material.

7. The instrument as in claim 1, wherein the shock absorbing material is attached to the instrument assembly.

8. The instrument as in claim 1, further comprising an adhesive to attach the shock absorbing material to the instrument assembly.

9. The instrument as in claim 1, further comprising a mechanical fastener to attach the shock absorbing material to the instrument assembly.

10. The instrument as in claim 1, wherein the shock absorbing material comprises a thickness to provide for compressing the shock absorbing material when the shock absorbing material and the instrument assembly are disposed in the logging instrument.

11. The instrument as in claim 1, wherein the shock absorbing material comprises at least one of silicone sheet material and expanded closed cell silicone sponge material.

12. The instrument as in claim 1, wherein the shock absorbing material is attached to the housing.

13. A method for producing a downhole instrument with shock protection for an instrument assembly, the downhole instrument comprising a housing, the method comprising:

removable placing a shock absorbing material about at least one of the instrument assembly and an interior of the housing for substantially an entire length of the instrument assembly; and

inserting the instrument assembly into the housing, wherein the shock absorbing material is disposed between the instrument assembly and the housing.

14. The method as in claim 13, wherein inserting comprises compressing the shock absorbing material.

15. The method as in claim 13, further comprising:

removing the instrument assembly from the housing;

removing the shock absorbing material from the at least one of the instrument assembly and the interior of the housing;

removably placing the shock absorbing material about at least one of the instrument assembly and the interior of the housing for substantially the entire length of the instrument assembly; and

inserting the instrument assembly into the housing, wherein the shock absorbing material is disposed between the instrument assembly and the housing.

16. A downhole instrument comprising:

a housing;

an instrument assembly; and

a material removably disposed between the housing and the instrument assembly for substantially an entire length of the instrument assembly, wherein the material at least one of compresses and stretches to reduce acceleration of the instrument assembly.