BOTTOM HOLE ASSEMBLY WITH A CLEANING TOOL

• US 20200131886A1
• Filed: 10/31/2018
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Active Grant

• Current Assignee: Weatherford Technology Holdings, LLC (Weatherford International PLC)
• Original Assignee: Weatherford Technology Holdings, LLC (Weatherford International PLC)
• Inventors: Hora, Kenneth D., Smalley, Michael, TEALE, David W.
• Granted Patent: US 11,047,210 B2
• Time in Patent Office: Days
• CPC Class Codes: E21B 23/01 for anchoring the tools or the like E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18
• CPC Class Codes: E21B 29/06 Cutting windows, e.g. directional window cutters for whipstock operations E21B29/005 and E21B29/08 take precedence
• CPC Class Codes: E21B 37/00 Methods or apparatus for cleaning boreholes or wells E21B21/00 takes precedence
• CPC Class Codes: E21B 37/04 operated by fluid pressure, e.g. free-piston scrapers
• CPC Class Codes: E21B 41/0035 Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
• CPC Class Codes: E21B 7/061 the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Abstract

A bottom hole assembly for use in a wellbore includes a whipstock; a downhole tool coupled to the whipstock; and a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, wherein the downhole tool is configured to engage the cleaned portion of the wall. In one example, the cleaning tool includes a body and a plurality of cleaning elements for cleaning the portion of the wall.

Claims

1. A bottom hole assembly for use in a wellbore, comprising:

a whipstock;

a downhole tool coupled to the whipstock; and

a cleaning tool coupled to the downhole tool for cleaning a portion of a wall of the wellbore, the cleaning tool having;

a body; and

a plurality of cleaning elements for cleaning the portion of the wall,

wherein the downhole tool is configured to engage the cleaned portion of the wall.

2. The bottom hole assembly of claim 1, wherein the cleaning tool further comprises:

a plurality of pockets formed in the body; and

the plurality of cleaning elements disposed in the plurality of pockets and movable between a retracted position and an extended position.

3. The bottom hole assembly of claim 1, wherein the plurality of cleaning elements are hydraulically actuated.

4. The bottom hole assembly of claim 3, further comprising a biasing member for biasing the plurality of cleaning members.

5. The bottom hole assembly of claim 1, wherein the cleaning elements include a scraping profile.

6. The bottom hole assembly of claim 1, wherein the downhole tool comprises an anchor having a slip, and the plurality of cleaning elements are axially aligned with the slip of the anchor.

7. The bottom hole assembly of claim 1, wherein the plurality of cleaning elements are threadedly attached to the body.

8. The bottom hole assembly of claim 7, wherein the plurality of cleaning elements comprises bristles.

9. The bottom hole assembly of claim 1, wherein the cleaning tool further comprises:

a centralizer disposed around the body, the centralizer having a plurality of bow springs; and

the plurality of cleaning elements disposed on the plurality of bow springs.

10. The bottom hole assembly of claim 1, wherein the downhole tool comprises an anchor.

11. The bottom hole assembly of claim 10, further comprising a milling tool releasably connected to the whipstock.

12. A method of positioning a bottom hole assembly in a wellbore, comprising:

lowering the bottom hole assembly into the wellbore, the bottom hole assembly having a whipstock, a downhole tool, and a cleaning tool having a cleaning element;

cleaning at least a portion of a wall of the wellbore using the cleaning tool; and

activating the downhole tool to engage the cleaned portion of the wall.

13. The method of claim 12, wherein the cleaning element is movable between a retracted position and an extended position.

14. The method of claim 13, wherein the cleaning element is lowered into the wellbore in the retracted position, and

the method includes moving the cleaning element to the extended position to clean the portion of the wall.

15. The method of claim 13, further comprising supplying hydraulic fluid to move the cleaning element to the extended position.

16. The method of claim 12, wherein the downhole tool comprises an anchor.

17. The method of claim 16, wherein the method includes axially aligning the cleaning element with a slip of the anchor.

18. The method of claim 16, further comprising orienting the whipstock before setting the anchor.

19. The method of claim 12, wherein cleaning the portion of the wall comprises reciprocating the cleaning tool.

20. The method of claim 19, wherein cleaning the portion of the wall further comprises rotating the cleaning tool and further reciprocating the cleaning tool.

21. The method of claim 12, further comprising circulating fluid while cleaning.