Extendable element systems for downhole tools

Patent metadata

Field	Value
Publication number	US-10801274-B2
Application number	US-201615270032-A
Country	US
Kind code	B2
Filing date	Sep 20, 2016
Priority date	Sep 20, 2016
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

Extendable elements of downhole tools are provided having an extension direction component perpendicular to a tool axis, wherein a force is applied to the extendable element when in operation. The extendable elements comprise a first cross-section that includes the extension direction component, a first surface configured to receive a first force component of the force, the first force component substantially perpendicular to the first surface and a second surface configured to transfer at least a portion of the first force component of the force to a body of the downhole tool. The second surface and the extension direction component perpendicular to the tool axis draw a first angle that is between 0° and 90°.

First claim

What is claimed is:

1. An extendable element of a downhole tool within a borehole, the downhole tool connected to a drill pipe and a disintegrating tool, wherein the disintegrating tool is rotated by rotating the drill pipe, the extendable element in contact with at least one of a borehole wall, a casing in the borehole, a liner in the borehole, and a hanger in the borehole, the downhole tool extendable by the extendable element in an extension direction having a component perpendicular to an axis of the downhole tool, wherein a force is applied to the extendable element when in operation, the extendable element comprising a first cross-section that includes the extension direction component that is perpendicular to the axis of the downhole tool, the first cross-section comprising:
a first surface of the extendable element configured to receive a first force component of the force, the first force component substantially perpendicular to the first surface of the extendable element; and
a second surface of the extendable element configured to transfer at least a portion of the first force component of the force to a body of the downhole tool,
wherein the second surface and the extension direction component perpendicular to the axis of the downhole tool draw a first angle that is between 0° and 90°.

2. The extendable element of claim 1 , wherein the second surface of the extendable element is curvilinear.

3. The extendable element of claim 2 , wherein the second surface of the extendable element comprises an arc length of a circle or a multi-center curve.

4. The extendable element of claim 2 , further comprising a receiving element configured to receive the second surface of the extendable element such that the force is transferred to the body of the downhole tool via a mating surface of the receiving element.

5. The extendable element of claim 1 , wherein:
the first force component includes a first force subcomponent and a second force subcomponent,
the first and second force subcomponents of the first force component sum up to the first force component,
the first and second force subcomponents are axis-symmetric to the first force component, and
the first force subcomponent and the second surface of the extendable element draw a second angle, the second force subcomponent and the second surface of the extendable element draw a third angle, wherein the second and third angles are substantially equal.

6. The extendable element of claim 5 , wherein the second surface of the extendable element is curvilinear.

7. The extendable element of claim 1 , wherein, in a second cross-section that includes the extension direction component perpendicular to the axis of the downhole tool at a different axial location in a direction of the axis of the tool from the first cross-section, the extendable element further comprises:
a third surface of the extendable element configured to receive a second force component of the force, the second force component substantially perpendicular to the third surface of the extendable element; and
a fourth surface of the extendable element configured to transfer at least a part of the second force component force to the body of the downhole tool,
wherein the fourth surface of the extendable element and the extension direction component draw a fourth angle that is between 0° and 90°.

8. The extendable element of claim 7 , wherein the fourth surface of the extendable element is curvilinear.

9. The extendable element of claim 8 , wherein the fourth surface of the extendable element comprises an arc length of a circle or a multi-center curve.

10. The extendable element of claim 1 , further comprising a receiving element configured to receive the second surface of the extendable element such that the force is transferred to the body of the downhole tool via a mating surface of the receiving element.

11. The extendable element of claim 10 , wherein the receiving element is one of a cassette, a frame, or a cartridge.

12. The extendable element of claim 1 , wherein the downhole tool further comprises:
an additional extendable element of the downhole tool within the borehole and in contact with at least one of the borehole wall, the casing in the borehole, the liner in the borehole, and the hanger in the borehole, the downhole tool extendable by the additional extendable element in a different extension direction having a component perpendicular to the axis of the downhole tool, wherein an additional force is applied to the additional extendable element when in operation, the additional extendable element comprising a respective first cross-section that includes the different extension direction component that is perpendicular to the axis of the downhole tool, the respective first cross-section of the additional extendable element comprising:
a respective first surface of the additional extendable element configured to receive a first force component of the additional force, the first force component of the additional force substantially perpendicular to the respective first surface of the additional extendable element; and
a respective second surface of the additional extendable element configured to transfer at least a portion of the first force component of the additional force to the body of the downhole tool,
wherein the respective second surface of the additional extendable element and the different extension direction component perpendicular to the axis of the downhole tool draw a different first angle that is between 0° and 90°.

13. A downhole system for operation within a borehole comprising:
a drill pipe;
a disintegrating tool operably connected to the drill pipe, wherein the disintegrating tool is rotated by rotating the drill pipe;
a downhole tool having a body by defining an axis of the downhole tool, the downhole tool connected to the drill pipe and the disintegrating tool; and
an extendable element in contact with at least one of a borehole wall, a casing in the borehole, a liner in the borehole, and a hanger in the borehole, the extendable element engageable with the body of the downhole tool, the downhole tool extendable by the extendable element in an extension direction having a component perpendicular to the axis of the downhole tool, wherein a force is applied to the extendable element when in operation, the extendable element comprising a first cross-section that includes the extension direction component that is perpendicular to the axis of the downhole tool, the first cross-section comprising:
a first surface of the extendable element configured to receive a first force component of the force, the first force component substantially perpendicular to the first surface of the extendable element; and
a second surface of the extendable element configured to transfer at least a portion of the first force component of the force to the body of the downhole tool,
wherein the second surface of the extendable element and the extension direction component perpendicular to the axis of the downhole tool draw a first angle that is between 0° and 90°.

14. The downhole system of claim 13 , further comprising a receiving element, wherein the force is transferred to the body the downhole tool via a mating surface of the receiving element.

15. The downhole system of claim 14 , wherein the receiving element is one of a cassette, a frame, or a cartridge.

16. The downhole system of claim 13 , wherein the second surface of the extendable element is curvilinear.

17. The downhole system claim 16 , wherein the second surface of the extendable element co

Assignees

• Mau Fabian
• Eggers Heiko
• Peters Volker
• Benedict Detlev
• Baker Hughes A Ge Co Llc

Inventors

• Mau Fabian
• Eggers Heiko
• Peters Volker
• Benedict Detlev

Classifications

• E21B43/10

  Setting of casings, screens, liners {or the like} in wells · CPC title

• E21B4/18

  Anchoring or feeding in the borehole · CPC title

• E21B17/1014 Primary

  Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well (E21B17/1042 takes precedence) · CPC title

• E21B47/12

  Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling · CPC title

• E21B23/02 Primary

  for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing (E21B23/03 - E21B23/06 take precedence) · CPC title