System and method for analyzing downhole drilling parameters using an opto-analytical device

Patent metadata

Field	Value
Publication number	US-10167718-B2
Application number	US-201214424095-A
Country	US
Kind code	B2
Filing date	Aug 31, 2012
Priority date	Aug 31, 2012
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

In one embodiment, a downhole drilling tool configured to engage a formation to form a wellbore includes one or more channels formed in a bit body, the channels configured to direct electromagnetic radiation. The downhole drilling tool also includes an opto-analytical device integrated with the downhole drilling tool, the opto-analytical device configured to receive electromagnetic radiation directed through the one or more channels and detect a drilling characteristic based on the received electromagnetic radiation.

First claim

What is claimed is:

1. A downhole drilling system comprising:
a downhole drilling tool configured to engage a formation to form a wellbore, the downhole drilling tool including:
one or more channels formed in a bit body, the one or more channels configured to direct electromagnetic radiation; and
an opto-analytical device integrated with the downhole drilling tool, the opto-analytical device configured to:
receive electromagnetic radiation directed to the opto-analytical device through the one or more channels; and
detect a drilling characteristic based on an intensity of the received electromagnetic radiation,
wherein the one or more channels are configured to direct the electromagnetic radiation through a surface of the bit body facing the formation and are formed in at least one of:
a blade disposed outwardly from exterior portions of the bit body; and
one ore more cutting elements disposed outwardly from exterior portions of the bit body.

2. The system of claim 1 , wherein the electromagnetic radiation is generated by friction associated with the downhole drilling tool engaging the formation.

3. The system of claim 1 , further comprising:
an illumination source integrated with the downhole drilling tool and configured to generate the electromagnetic radiation; and
a power source integrated with the downhole drilling tool and configured to supply power to the illumination source and the opto-analytical device.

4. The system of claim 3 , wherein the power source comprises at least one of a battery and a piezoelectric generator.

5. The system of claim 3 , wherein the downhole drilling tool comprises a first channel and a second channel, the first channel configured to receive electromagnetic radiation emitted from the second channel.

6. The system of claim 5 , wherein the downhole drilling tool comprises a first blade and a second blade, and wherein the first channel is formed within the first blade and the second channel is formed within the second blade.

7. The system of claim 1 , wherein the one or more channels are filled with an optically transmissive material.

8. The system of claim 1 , wherein the one or more channels are coated with a reflective material.

9. The system of claim 1 , wherein the one or more channels comprise an optical fiber.

10. The system of claim 1 , further comprising an optically transmissive window at an end of one of the channels configured to prevent materials from entering the channel.

11. The system of claim 1 , further comprising an accelerometer coupled to the downhole drilling tool.

12. A drill bit comprising:
a bit body;
a rotational axis about which the bit body rotates;
one or more channels formed in the bit body, the channels configured to direct electromagnetic radiation; and
an opto-analytical device integrated with the bit body, the opto-analytical device configured to:
receive electromagnetic radiation directed to the opto-analytical device through the one or more channels; and
detect a drilling characteristic at or near the end of a wellbore based on an intensity of the received electromagnetic radiation,
wherein the one or more channels are configured to direct the electromagnetic radiation through a surface of the bit body facing a formation and are formed in at least one of:
a blade disposed outwardly from exterior portions of the bit body; and
one ore more cutting elements disposed outwardly from exterior portions of the bit body.

13. The drill bit of claim 12 , wherein the electromagnetic radiation is generated by friction associated with the bit body engaging a formation.

14. The drill bit of claim 12 , further comprising:
an illumination source integrated with the bit body and configured to generate the electromagnetic radiation; and
a power source integrated with the bit body and configured to supply power to the illumination source and the opto-analytical device.

15. The drill bit of claim 14 , wherein the power source comprises at least one of a battery and a piezoelectric generator.

16. The drill bit of claim 14 , further comprising a first channel and a second channel, the first channel configured to receive electromagnetic radiation emitted from the second channel.

17. The drill bit of claim 16 , further comprising a first blade and a second blade, the first channel formed within the first blade and the second channel formed within the second blade.

18. The drill bit of claim 12 , wherein the one or more channels are filled with an optically transmissive material.

19. The drill bit of claim 12 , wherein the one or more channels are coated with a reflective material.

20. The drill bit of claim 12 , wherein the one or more channels comprise an optical fiber.

21. The drill bit of claim 12 , further comprising an optically transmissive window at an end of one of the channels configured to prevent materials from entering the channel.

22. The drill bit of claim 12 , further comprising an accelerometer coupled to the bit body.

Assignees

• Pelletier Michael T
• Freese Robert P
• Weaver Gary E
• Chen Shilin
• Halliburton Energy Services Inc

Inventors

• Pelletier Michael T
• Freese Robert P
• Weaver Gary E
• Chen Shilin

Classifications

• E21B44/00

  Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions · CPC title

• E21B10/42

  Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits (characterised by wear resisting parts E21B10/46; by conduits or nozzles for drilling fluid E21B10/60; by detachable or adjustable parts E21B10/62) · CPC title

• E21B47/01

  Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like · CPC title

• E21B10/00

  Drill bits (specially adapted for deflecting the direction of boring {E21B7/064}; with means for collecting substances E21B27/00) · CPC title

• E21B49/005

  Testing the nature of borehole walls or the formation by using drilling mud or cutting data · CPC title