Mud pulse telemetry tool comprising a low torque valve

• US 10,577,927 B2
• Filed: 10/21/2015
• Issued: 03/03/2020
• Est. Priority Date: 10/21/2015
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Odegbami, Olumide O., Chambers, Larry DeLynn
• Primary Examiner(s): McCormack, Thomas S
• Application Number:
  US15/758,120
• Publication Number:
  US 20190383138A1
• Time in Patent Office: 1,595 Days
• Field of Search: None
• CPC Class Codes: E21B 34/06 in wells
• CPC Class Codes: E21B 47/18 through the well fluid , e.g. mud pressure pulse telemetry
• CPC Class Codes: E21B 47/20 by modulation of mud waves, e.g. by continuous modulation
• CPC Class Codes: E21B 49/00 Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells

Abstract

According to one embodiment, a mud pulse telemetry tool includes a body having a channel, a motor, and a valve coupled to the motor and disposed within the channel. The valve includes a plurality of lobes, with at least one of the plurality of lobes having a cavity formed therein.

Claims

1. A system, comprising:

a logging tool;

a mud pulse telemetry tool coupled to the logging tool, the mud pulse telemetry tool comprising;

a body having a channel;

a motor; and

a valve coupled to the motor and disposed within the channel, the valve comprising a plurality of lobes;

wherein each lobe is defined by a front planar surface, a back planar surface, a generally arcuate-shaped top surface disposed between the front planar surface and the back planar surface, and a pair of oppositely-disposed side surfaces disposed between the front planar surface and the back planar surface;

wherein a cavity is formed between the front planar surface, the back planar surface, the generally arcuate-shaped top surface and pair of oppositely-disposed side surfaces in each of the plurality of lobes; and

wherein openings are formed in each of the front planar surface and the back planar surface.

2. The system of claim 1, wherein each lobe is generally arcuate-shaped.

3. The system of claim 2, wherein generally arcuate-shaped channels are formed between adjacent lobes.

4. The system of claim 1, wherein openings are formed in each of the front planar surface and the back planar surface.

5. A mud pulse telemetry tool, comprising:

a body having a channel;

a motor; and

a valve coupled to the motor and disposed within the channel, the valve comprising a plurality of lobes;

wherein each lobe is defined by a front planar surface, a back planar surface, a generally arcuate-shaped top surface disposed between the front planar surface and the back planar surface, and a pair of oppositely-disposed side surfaces disposed between the front planar surface and the back planar surface;

wherein a cavity is formed between the front planar surface, the back planar surface, the generally arcuate-shaped top surface and pair of oppositely-disposed side surfaces in each of the plurality of lobes; and

wherein openings are formed in each of the front planar surface and the back planar surface.

6. The mud pulse telemetry tool of claim 5, wherein each lobe is generally arcuate-shaped.

7. The mud pulse telemetry tool of claim 6, wherein generally arcuate-shaped channels are formed between adjacent lobes.

8. The mud pulse telemetry tool of claim 5, wherein openings are formed in each of the front planar surface and the back planar surface.

9. A mud pulse generator valve, comprising:

a plurality of lobes;

wherein each lobe is defined by a front planar surface, a back planar surface, a generally arcuate-shaped top surface disposed between the front planar surface and the back planar surface, and a pair of oppositely-disposed side surfaces disposed between the front planar surface and the back planar surface;

wherein a cavity is formed between the front planar surface, the back planar surface, the generally arcuate-shaped top surface and pair of oppositely-disposed side surfaces in each of the plurality of lobes; and

wherein openings are formed in each of the pair of oppositely-disposed side surfaces.

10. The mud pulse generator valve of claim 9, wherein each lobe is generally arcuate-shaped.

11. The mud pulse generator valve of claim 10, wherein generally arcuate-shaped channels are formed between adjacent lobes.

12. The mud pulse generator valve of claim 9, wherein opening are formed in each of the front planar surface and the back planar surface.