Rotary steerable system with multiple rows of actuators

Patent metadata

Field	Value
Publication number	US-12247485-B2
Application number	US-202318230949-A
Country	US
Kind code	B2
Filing date	Aug 7, 2023
Priority date	Aug 7, 2023
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

A rotary steerable system on a bottom-hole assembly, that includes a first actuator row, that includes a first steering actuator, a second steering actuator, and a third steering actuator, and a second actuator row, disposed at a radial offset from the first actuator row, that includes a fourth steering actuator.

First claim

What is claimed is:

1. A rotary steerable system on a bottom-hole assembly, comprising:
a first actuator row, comprising:
a first steering actuator;
a second steering actuator; and
a third steering actuator; and

a second actuator row, comprising:
a fourth steering actuator disposed radially between the first steering actuator and the second steering actuator,

wherein the rotary steerable system is configured to:
extend the first steering actuator; and
extend the fourth steering actuator while the first steering actuator is at least partially extended.

2. The rotary steerable system of claim 1 , wherein the second actuator row further comprises:
a fifth steering actuator; and
a sixth steering actuator.

3. The rotary steerable system of claim 2 , wherein the rotary steerable system is coupled to a drill bit via the bottom-hole assembly.

4. The rotary steerable system of claim 3 , wherein the drill bit is configured to drill in a drilling direction.

5. The rotary steerable system of claim 4 , wherein the first actuator row is disposed in a first plane orthogonal to the drilling direction.

6. The rotary steerable system of claim 5 , wherein the first steering actuator, the second steering actuator, and the third steering actuator are disposed uniformly on a first circumference of the bottom-hole assembly.

7. The rotary steerable system of claim 6 , wherein the second actuator row is disposed in a second plane orthogonal to the drilling direction.

8. The rotary steerable system of claim 7 , wherein each steering actuator of the first actuator row is not aligned with any of the steering actuators of the second actuator row, in the drilling direction.

9. The rotary steerable system of claim 1 , wherein the fourth steering actuator:
has a first radial offset of less than 90° from the first steering actuator, and
has a second radial offset of less than 90° from the second steering actuator.

10. A drillstring comprising a rotary steerable system, wherein the rotary steerable system comprises:
a first actuator row, comprising:
a first steering actuator; and
a second steering actuator; and

a second actuator row, comprising:
a third steering actuator has a radial offset of 90° or less from the first steering actuator,

wherein the rotary steerable system is configured to:
extend the first steering actuator; and
extend the third steering actuator while the first steering actuator is at least partially extended.

11. The drillstring of claim 10 , wherein the drillstring is configured to drill in a drilling direction.

12. The drillstring of claim 11 , wherein due to the radial offset, each of the first steering actuator and the second steering actuator are not aligned with the third steering actuator, in the drilling direction.

13. The drillstring of claim 12 , wherein each of the first steering actuator and the second steering actuator are disposed uniformly on a first circumference of the rotary steerable system.

14. The drillstring of claim 13 , wherein each of the second actuator row comprises a fourth steering actuator, wherein the third steering actuator and the fourth steering actuator are disposed uniformly on a second circumference of the rotary steerable system.

15. The drillstring of claim 12 , wherein the first actuator row comprises a fourth steering actuator, wherein the first steering actuator, the second steering actuator, and the fourth steering actuator are disposed uniformly on a first circumference of the rotary steerable system-comprises three steering actuators.

16. The drillstring of claim 12 , wherein the second actuator row comprises a fourth steering actuator and a fifth steering actuator, wherein the third steering actuator, the fourth steering actuator, and the fifth steering actuator are disposed uniformly on a second circumference of the rotary steerable system.

17. The drillstring of claim 12 , wherein the first actuator row comprises a fourth steering actuator and a fifth steering actuator, wherein the first steering actuator, the second steering actuator, the fourth steering actuator, and the fifth steering actuator are disposed uniformly on a first circumference of the rotary steerable system.

18. The drillstring of claim 12 , wherein the second actuator row comprises a fourth steering actuator, a fifth steering actuator, and a sixth steering actuator, wherein the third steering actuator, the fourth steering actuator, the fifth steering actuator, and the sixth steering actuator are disposed uniformly on a second circumference of the rotary steerable system.

19. The drillstring of claim 18 , wherein the first steering actuator is controlled using a geostationary valve.

20. The drillstring of claim 18 , wherein the first steering actuator is controlled using electrical actuation.

Assignees

• Halliburton Energy Services Inc

Inventors

• Zhang Lizheng
• Badrinarayanan Paravastu

Classifications

• E21B7/062

  the tool shaft rotating inside a non-rotating guide travelling with the shaft (E21B7/067 and E21B7/068 take precedence) · CPC title

• E21B7/067 Primary

  with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub · CPC title