Method for inspecting down hole drilling systems for flaws using ultrasonics

• US 8,976,017 B1
• Filed: 04/12/2011
• Issued: 03/10/2015
• Est. Priority Date: 04/13/2010
• Status: Active Grant

• Current Assignee: Osnel De La Cruz Rodriguez
• Original Assignee: Osnel De La Cruz Rodriguez
• Inventors: Cannon, Shawn Paul
• Primary Examiner(s): Lieu, Julie
• Application Number:
  US13/085,050
• Time in Patent Office: 1,428 Days
• Field of Search: None
• US Class Current: 340/514
• CPC Class Codes: G01N 2291/2634 cylindrical from outside
• CPC Class Codes: G01N 29/043 in the interior, e.g. by shear waves
• CPC Class Codes: G01N 29/2487 Directing probes, e.g. angle probes directing arrangements G01N29/221
• CPC Class Codes: G01N 29/262 by electronic orientation or focusing, e.g. with phased arrays phased arrays per se G10K11/34
• CPC Class Codes: G01N 29/265 by moving the sensor relative to a stationary material
• CPC Class Codes: G01N 29/28 providing acoustic coupling , e.g. water impedance matching G10K11/02
• CPC Class Codes: G01N 29/4427 with stored values, e.g. threshold values

Abstract

A method for inspecting down hole drilling systems for identifying indications of flaws in material. The method can include removing particulate, disposing a wave coupling medium on an area of interest, attaching a probe to a sound carrying wedge, engaging the sound carrying wedge over the wave coupling medium, transmitting inspection signals to the area of interest, manipulating the probe to produce detection signals, transmitting the detection signals to a data storage, presenting the detection signals and a known reference level to a user, and comparing the detection signals to the known reference level to determine if the detection signals are within a standard deviation of the known reference level. The method can include adapting a sound carrying wedge to form-fittingly couple to an area of interest of a down hole drilling system.

Claims

1. A method for inspecting down hole drilling systems for identifying indications of flaws in material, the method comprising:

a. removing particulate from a down hole drilling system;

b. disposing a wave coupling medium on an area of interest of the down hole drilling system, wherein the wave coupling medium is capable of transmitting ultrasonic waves;

c. attaching a probe to a sound carrying wedge, wherein the probe comprises an ultrasonic emitter array comprising a plurality of ultrasonic emitter elements configured to be independently actuated, wherein each ultrasonic emitter element is actuated concurrently with another ultrasonic emitter element, or each ultrasonic emitter element is actuated singly, and wherein the sound carrying wedge is adapted to couple to the area of interest;

d. engaging the sound carrying wedge with the probe attached thereto over the wave coupling medium;

e. transmitting a plurality of inspection signals to the area of interest by actuating the ultrasonic emitter array to provide the plurality of inspection signals, wherein the plurality of inspection signals is focused on a specific area and at a specific distance and further wherein the sound carrying wedge is adapted to receive the plurality of inspection signals and to disperse the plurality of inspection signals at a plurality of predetermined inspection signal angles into the area of interest;

f. manipulating the probe along the area of interest while actuating the ultrasonic emitter to produce at least one detection signal, wherein the at least one detection signal is a reflected inspection signal;

g. transmitting the at least one detection signal to a data storage in communication with a processor;

h. using computer instructions stored in the data storage to present the at least one detection signal and a known reference level stored in the data storage to a user; and

i. comparing the at least one detection signal to the known reference level to determine if the at least one detection signal is within a standard deviation of the known reference level.

2. The method of claim 1, further comprising:

a. manipulating the probe along the area of interest while actuating the ultrasonic emitter to produce a plurality of detection signals;

b. compiling the plurality of detection signals to determine any detection signals falling outside of the standard deviation of the known reference level; and

c. presenting the compiled detection signals to the user for a quick determination of an area of interest with detection signals falling outside the standard deviation of the known reference level.

3. The method of claim 1, further comprising using additional sound carrying wedges, wherein each of the additional sound carrying wedges is adapted to disperse an additional plurality of inspection signals at additional predetermined inspection signal angles, and wherein each additional sound carrying wedge enables additional detection signals to be produced for the area of interest.

4. The method of claim 1, wherein the predetermined inspection signal angles range from zero degrees to ninety degrees.

5. The method of claim 1, further comprising providing communication between the data storage, the processor, or combinations thereof with a network, wherein a client device is in communication with the network for receiving inspection data from the data storage, the processor, or combinations thereof, enabling the user to remotely view the inspection data as an inspection occurs or as an inspection is completed.

6. The method of claim 5, wherein the client device is a mobile phone, a computer, a lap top, or a tablet.

7. The method of claim 1, further comprising adapting the sound carrying wedge to couple to the area of interest by:

a. measuring a curvature of a surface of the area of interest; and

b. shaping a sound carrying wedge that is not adapted to couple to the area of interest to have a curvature that matches the measured curvature of the surface of the area of interest.

8. The method of claim 1, wherein detection signals that fall outside of known reference levels indicate internal or external flaws of the down hole drilling system including:

fractures, cracks, hairline cracks, rust, degradation, corrosion, residue build-up, other types of flaws found in the inherent, processing and service of the down hole drilling system, or combinations thereof.

9. The method of claim 1, wherein the down hole drilling system comprises:

a drilling motor, drilling motor components, drilling tools, drilling tool components, a mud motor bottom hole assembly, cylindrical components of down hole tools, ball bearings, housings, threaded areas of the down hole drilling system, transition areas of the down hole drilling system, gap subs, or combinations thereof.

10. The method of claim 1, wherein the removing of particulate from the down hole drilling system comprises:

using a mechanical grinder to remove the particulate, using a chemical to remove the particulate, using water to remove the particulate, using a hose with liquid to remove the particulate, using a pressure washer to remove the particulate, or combinations thereof.

11. The method of claim 1, further comprising using as the wave coupling medium an ultrasonic conductive gel, water, or combinations thereof.

12. The method of claim 1, wherein the probe is attached to the sound carrying wedge using nuts and bolts, screws, another fastening means, or combinations thereof.

13. The method of claim 1, wherein the probe further comprises a plurality of piezoelectric crystals.

14. The method of claim 1, wherein the sound carrying wedge is formed of ceramic, rexolite, or another material.

15. The method of claim 1, wherein the sound carrying wedge comprises a curved contact surface that is adapted to form-fittingly match a curvature of the area of interest, and wherein the curved contact surface is in full contact with the area of interest when the sound carrying wedge is engaged over the wave coupling medium.

16. The method of claim 1, further comprising using the probe to receive the at least one detection signal and to transmit the at least one detection signal to the data storage.

17. A method for inspecting down hole drilling systems for identifying indications of flaws in material, the method comprising:

a. disposing a wave coupling medium on an area of interest of the down hole drilling system;

b. attaching a probe to a sound carrying device, wherein the probe comprises an ultrasonic emitter array comprising a plurality of ultrasonic emitter elements configured to be independently actuated, wherein each ultrasonic emitter element is actuated concurrently with another ultrasonic emitter element, or each ultrasonic emitter element is actuated singly, and wherein the sound carrying wedge is adapted to form-fittingly couple to the area of interest;

c. engaging the sound carrying wedge with the probe attached thereto over the wave coupling medium;

d. transmitting multiple inspection signals from the probe, through the sound carrying wedge, through the wave coupling medium, and into the area of interest by actuating the ultrasonic emitter array, wherein each of the multiple inspection signals is focused on a specific area and at a specific distance, and further wherein each of the multiple inspection signals is transmitted at an angle into the area of interest;

e. receiving at least one detection signal, wherein the at least one detection signal is an inspection signal reflected from the area of interest; and

f. comparing the at least one detection signal to a known reference level to determine if the at least one detection signal is within a standard deviation of the known reference level.

18. The method of claim 17, further comprising removing particulate from the down hole drilling system before disposing the wave coupling medium on the area of interest of the down hole drilling system.

19. A method for inspecting down hole drilling systems for identifying indications of flaws in material, the method comprising:

a. adapting a sound carrying wedge to form-fittingly couple to an area of interest of a down hole drilling system;

b. disposing a wave coupling medium on the area of interest;

c. attaching a probe to the sound carrying wedge wherein the probe comprises ultrasonic emitter array comprising a plurality of ultrasonic emitter elements configured to be independently actuated, and further wherein each ultrasonic emitter element is actuated concurrently with another ultrasonic emitter element, or each ultrasonic emitter element is actuated singly;

d. engaging the sound carrying wedge with the probe attached thereto over the wave coupling medium;

e. transmitting a plurality of inspection signals to the area of interest by actuating the probe, wherein the sound carrying wedge receives the plurality of inspection signals and disperses the plurality of inspection signals at a plurality of inspection signal angles into the area of interest, and further wherein the plurality of inspection signals is focused on a specific area and at a specific distance;

f. receiving at least one detection signal, wherein the at least one detection signal is an inspection signal reflected from the area of interest; and

g. comparing the at least one detection signal to a known reference level to determine if the at least one detection signal is within a standard deviation of the known reference level.

20. The method of claim 19, wherein adapting the sound carrying wedge to form-fittingly couple to the area of interest of the down hole drilling system comprises:

a. measuring a curvature of a surface of the area of interest; and

b. shaping a sound carrying wedge that is not adapted to couple to the area of interest to have a curvature that matches the measured curvature of the surface of the area of interest.