Mill, whipstock, and anchor assembly, method and system

Patent metadata

Field	Value
Publication number	US-12571271-B2
Application number	US-202418816695-A
Country	US
Kind code	B2
Filing date	Aug 27, 2024
Priority date	Aug 27, 2024
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A mill, whipstock, and anchor assembly, including a mill, a whipstock attached to the mill, an anchor attached to the whipstock, the anchor having a kinetic energy releaser, the releaser including an energetic material, and a sensor in the assembly, the sensor configured to respond to a selected parameter by sending a first signal. A method for setting an anchor of the assembly, the method including causing a condition to exist at the sensor that at least reaches a threshold for the sensor to generate the first signal, igniting the energetic material, disappearing the releaser, and applying kinetic energy to a slip to set the anchor. A borehole system, including a borehole in a subsurface formation, a string disposed in the borehole, and the mill, whipstock, and anchor assembly disposed within or as a part of the string.

First claim

What is claimed is:

1 . A mill, whipstock, and anchor assembly, comprising:
a mill; a whipstock attached to the mill; an anchor attached to the whipstock, the anchor having a kinetic energy releaser, the releaser including an energetic material; and a sensor in the assembly, the sensor configured to respond to a selected parameter by sending a first signal.

2 . The assembly as claimed in claim 1 , wherein the first signal is an electric signal.

3 . The assembly as claimed in claim 1 , wherein the sensor is a pressure sensor.

4 . The assembly as claimed in claim 1 , wherein the sensor is located within the anchor.

5 . The assembly as claimed in claim 1 , wherein the sensor is located within the mill.

6 . The assembly as claimed in claim 5 , wherein the sensor senses one of pressure within the mill, pressure outside of the mill, or both pressure within and pressure outside of the mill.

7 . The assembly as claimed in claim 1 , wherein the releaser is a disappear-on-demand material.

8 . The assembly as claimed in claim 1 , wherein the releaser is entirely an energetic material.

9 . The assembly as claimed in claim 1 , wherein the releaser responds directly to the first signal.

10 . The assembly as claimed in claim 1 , wherein the releaser responds to a second signal generated in an electronics package that generates the second signal in response to receipt of the first signal.

11 . The assembly as claimed in claim 1 , wherein the energetic material is configured to ignite a disappear-on-demand material.

12 . The assembly as claimed in claim 1 , wherein the releaser prior to release extends from a drive bar and interacts with an abutment surface of a housing of the anchor.

13 . The assembly as claimed in claim 12 , wherein the drive bar is in contact with a source of potential energy.

14 . A method for setting an anchor of the assembly claimed in claim 1 , the method comprising:
causing a condition to exist at the sensor that at least reaches a threshold for the sensor to generate the first signal; igniting the energetic material; disappearing the releaser; and applying kinetic energy to a slip to set the anchor.

15 . The method as claimed in claim 14 , wherein the causing is pressurizing a volume of fluid to which the sensor is exposed.

16 . The method as claimed in claim 15 , wherein the pressurizing includes closing a blowout preventer.

17 . The method as claimed in claim 14 , wherein the applying includes releasing potential energy stored in a spring.

18 . A borehole system, comprising:
a borehole in a subsurface formation; a string disposed in the borehole; and the mill, whipstock, and anchor assembly as claimed in claim 1 disposed within or as a part of the string.

Assignees

• Baker Hughes Oilfield Operations Llc

Inventors

• Nguyen Tuan
• Trahan James Scott
• Alexander David

Classifications

• E21B7/061

  the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock · CPC title

• E21B47/06

  Measuring temperature or pressure · CPC title

• E21B23/01 Primary

  for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) · CPC title