Pipe inspection systems and methods

• US 6,782,751 B2
• Filed: 09/13/2002
• Issued: 08/31/2004
• Est. Priority Date: 09/13/2002
• Status: Active Grant

• Current Assignee: Ctes Lc
• Original Assignee: Ctes Lc
• Inventors: Newman, Kenneth R., Linares, Lionel S.
• Primary Examiner(s): Williams, Hezron
• Assistant Examiner(s): Miller, Rose M.
• Application Number:
  US10/243,996
• Publication Number:
  US 20040050167A1
• Time in Patent Office: 718 Days
• Field of Search: 736/20, 736/22, 736/23, 736/44
• US Class Current: 73/622
• CPC Class Codes: G01N 2291/0226 Oils, e.g. engine oils
• CPC Class Codes: G01N 2291/02827 Elastic parameters, strength or force
• CPC Class Codes: G01N 2291/02854 Length, thickness
• CPC Class Codes: G01N 2291/0421 Longitudinal waves
• CPC Class Codes: G01N 2291/0422 Shear waves, transverse waves, horizontally polarised waves
• CPC Class Codes: G01N 2291/044 Internal reflections (echoes), e.g. on walls or defects
• CPC Class Codes: G01N 2291/048 Transmission, i.e. analysed material between transmitter and receiver
• CPC Class Codes: G01N 2291/2634 cylindrical from outside
• CPC Class Codes: G01N 29/225 Supports, positioning or alignment in moving situation
• CPC Class Codes: G01N 29/28 providing acoustic coupling , e.g. water impedance matching G10K11/02
• CPC Class Codes: G01N 29/38 by time filtering, e.g. using time gates
• CPC Class Codes: G01N 29/44 Processing the detected response signal , e.g. electronic circuits specially adapted therefor digital signal processing per se G06F17/00

Abstract

Systems and methods for ultrasonically inspecting pipe, the pipe having a longitudinal axis, the methods in certain aspects including compressing with a compressing force an elastomeric element between an ultrasonic probe of an ultrasonic pipe inspection system and a pipe to be inspected; and, in certain aspects, the systems and methods including placing a coupling between the elastomeric element and the pipe, wherein the elastomeric element surrounds the pipe; and, in certain aspects, a system for ultrasonically inspecting pipe, the system with a housing, a packer element in the housing with an opening through which a pipe to be inspected is passable, and at least one ultrasonic probe in or on the housing useful in conjunction with an ultrasonic apparatus for inspecting pipe.

Claims

1. A method for ultrasonically inspecting pipe, the pipe having a longitudinal axis, the method comprising

compressing with a compressing force an elastomeric element between an ultrasonic probe apparatus of an ultrasonic pipe inspection system and a pipe to be inspected thereby forcing the elastomeric element against the pipe,

wherein the compressing force is applied generally in the direction of the longitudinal axis of the pipe.

2. The method of claim 1 further comprising placing a coupling fluid between the elastomeric element and the pipe.

3. The method of claim 2 wherein the coupling fluid is from the group consisting of water, oil and grease.

4. The method of claim 1 wherein the elastomeric element surrounds the pipe.

5. The method of claim 1 wherein the elastomeric element is a packing element.

6. The method of claim 5 wherein the packing element is a stripper packer.

7. The method of claim 6 wherein the compressing force is applied by at least one compressing member.

8. The method of claim 6 wherein the packing element is from the group consisting of a coiled tubing stripper packer, a drilling stripper packer, and a hydraulic workover stripper packer.

9. The method of claim 1 wherein the ultrasonic probe apparatus is mounted in a housing, the elastomeric element within the housing.

10. The method of claim 1 wherein the ultrasonic probe apparatus is mounted on or embedded in a housing, the elastomeric element within the housing.

11. The method of claim 1 wherein the elastomeric element is in contact with the ultrasonic probe apparatus.

12. The method of claim 1 wherein the ultrasonic probe apparatus is mounted within the elastomeric element.

13. The method of claim 1 wherein the elastomeric element comprises a first portion made of sealing material for sealing against the pipe and a second portion made of acoustic transmission material disposed between the ultrasonic probe apparatus and the pipe.

14. A method for ultrasonically inspecting pipe, the pipe having a longitudinal axis, the method comprising

compressing with a compressing force an elastomeric element between an ultrasonic probe apparatus of an ultrasonic pipe inspection system and a pipe to be inspected thereby forcing the elastomeric element against the pipe, and

wherein the elastomeric element is a packing element.

15. A system for ultrasonically inspecting pipe, the pipe having a longitudinal axis, the system comprising

at least one ultrasonic apparatus for transmitting ultrasonic sound waves to a pipe to be inspected, for receiving reflected waves back from said pipe, and for producing signals indicative of a parameter of said pipe, the at least one ultrasonic apparatus having at least one ultrasonic probe,

control apparatus for controlling the at least one ultrasonic apparatus,

processing apparatus for processing signals from the at least one ultrasonic apparatus,

an elastomeric element for contacting the pipe and for contacting the at least one ultrasonic probe, the at least one ultrasonic probe located in or adjacent the elastomeric element, and

apparatus for applying compressive force to the elastomeric element, and

wherein the elastomeric element is a stripper element of a stripper packer system.

16. The system of claim 15 wherein the stripper packer system is from the group consisting of a coiled tubing stripper packer system, a drilling stripper packer system, and a hydraulic workover stripper packer system.

17. The system of claim 15 wherein the at least one ultrasonic probe is mounted in a housing.

18. The system of claim 15 wherein the at least one ultrasonic probe contacts the elastomeric element.

19. The system of claim 15 wherein the at least one ultrasonic probe is mounted within the elastomeric element.

20. The system of claim 15 wherein the compressing force is applied generally in a direction parallel to the longitudinal axis of the pipe.

21. The system of claim 15 wherein the compressing force effects radial compression of the elastomeric element.

22. The system of claim 15 wherein the compressing force is applied by at least one compressing member.

23. A system for ultrasonically inspecting pipe, the pipe having a longitudinal axis, the system comprising

at least one ultrasonic apparatus for transmitting ultrasonic sound waves to a pipe to be inspected, for receiving reflected waves back from said pipe, and for producing signals indicative of a parameter of said pipe, the at least one ultrasonic apparatus having at least one ultrasonic probe,

control apparatus for controlling the at least one ultrasonic apparatus,

processing apparatus for processing signals from the at least one ultrasonic apparatus,

an elastomeric element for contacting the pipe and for contacting the at least one ultrasonic probe, the at least one ultrasonic probe located in or adjacent the elastomeric element,

apparatus for applying compressive force to the elastomeric element,

wherein the elastomeric element is a stripper element of a stripper packer system,

wherein the stripper packer system is from the group consisting of a coiled tubing stripper packer system, a drilling stripper packer system, and a hydraulic workover stripper packer system, and

wherein the at least one ultrasonic probe is mounted in or on a housing, the elastomeric element within the housing.