Degradable wellbore isolation devices with varying fabrication methods

Patent metadata

Field	Value
Publication number	US-2016201425-A1
Application number	US-201514896679-A
Country	US
Kind code	A1
Filing date	Aug 13, 2015
Priority date	Aug 14, 2014
Publication date	Jul 14, 2016
Grant date	—

Abstract

Downhole tools, methods, and systems of use thereof, the downhole tool comprising a wellbore isolation device that provides a plurality of components including one or more first components and one or more second components, wherein at least the first and second one or more components are made of a degradable metal material that degrades when exposed to a wellbore environment, and wherein the one or more first components is fabricated by a first fabrication method and the one or more second components is fabricated by a second fabrication method.

First claim

What is claimed is:

1 . A downhole tool, comprising:
a wellbore isolation device that provides a plurality of components including one or more first components and one or more second components,
wherein at least the first and second one or more components are made of a degradable metal material that degrades when exposed to a wellbore environment, and
wherein the one or more first components is fabricated by a first fabrication method and the one or more second components is fabricated by a second fabrication method.

2 . The downhole tool of claim 1 , wherein the first fabrication method and the second fabrication method are selected from the group consisting of casting, forging, extruding, stamping, sintering, molding, rolling, pressing, printing, and any combination thereof.

3 . The downhole tool of claim 1 , wherein the wellbore isolation device is a frac plug, a bridge plug, a wellbore packer, a wiper plug, a cement plug, a basepipe plug, a sand screen plug, an inflow control device plug, an autonomous inflow control device plug, a tubing section, or a tubing string.

4 . The downhole tool of claim 1 , wherein the degradable metal material is an alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof.

5 . The downhole tool of claim 1 , wherein the degradable metal material is an alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof, and wherein the alloy further comprises a dopant selected from the group consisting of iron, copper, nickel, gallium, carbon, tungsten, and any combination thereof.

6 . The downhole tool of claim 1 , wherein the plurality of components includes a mandrel, a mule shoe, and an anchoring mechanism that is actuatable to anchor the wellbore isolation device within a wellbore,
wherein the one or more first components includes the mandrel, and the one or more second components includes the mule shoe.

7 . The downhole tool of claim 1 , wherein the plurality of components includes a mandrel, a mule shoe, and an anchoring mechanism that is actuatable to anchor the wellbore isolation device within a wellbore,
wherein the one or more first components includes the mandrel, and the one or more second components includes the mule shoe, and wherein the first fabrication method is extruding and the second fabrication method is casting.

8 . The downhole tool of claim 1 , wherein the one or more first components degrades at a first degradation rate and the one or more second components degrades at a second degradation rate that is slower than the first degradation rate.

9 . The downhole tool of claim 1 , wherein the degradable metal material has an average dissolution rate of greater than about 0.01 milligrams per square centimeter per hour at 93° C. in a 15% potassium chloride solution.

10 . The downhole tool of claim 1 , wherein the degradable metal material loses greater than about 0.1% of total mass per day at 93° C. in a 15% potassium chloride solution.

11 . A method, comprising:
introducing a wellbore isolation device into a wellbore, the wellbore isolation device providing a plurality of components including one or more first components and one or more second components,
wherein at least the first and second one or more components are made of a degradable metal material that degrades when exposed to a wellbore environment, and
wherein the one or more first components is fabricated by a first fabrication method and the one or more second components is fabricated by a second fabrication method;
anchoring the wellbore isolation device within the wellbore at a target location; performing at least one downhole operation; degrading the one or more first components and the one or more second components.

12 . The method of claim 11 , wherein the first fabrication method and the second fabrication method are selected from the group consisting of casting, forging, extruding, stamping, sintering, molding, rolling, pressing, printing, and any combination thereof.

13 . The method of claim 11 , wherein the wellbore isolation device is a frac plug, a bridge plug, a wellbore packer, a wiper plug, a cement plug, a basepipe plug, a sand screen plug, an inflow control device plug, an autonomous inflow control device plug, a tubing section, or a tubing string.

14 . The method of claim 11 , wherein the degradable metal material is an alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof.

15 . The method of claim 11 , wherein the degradable metal material is an alloy selected from the group consisting of a magnesium alloy, an aluminum alloy, and any combination thereof, and wherein the alloy further comprises a dopant selected from the group consisting of iron, copper, nickel, gallium, carbon, tungsten, and any combination thereof.

16 . The method of claim 11 , wherein the plurality of components includes a mandrel, a mule shoe, and an anchoring mechanism that is actuatable to anchor the wellbore isolation device within a wellbore,
wherein the one or more first components includes the mandrel, and the one or more second components includes the mule shoe.

17 . The method of claim 11 , wherein the plurality of components includes a mandrel, a mule shoe, and an anchoring mechanism that is actuatable to anchor the wellbore isolation device within a wellbore,
wherein the one or more first components includes the mandrel, and the one or more second components includes the mule shoe, and wherein the first fabrication method is extruding and the second fabrication method is casting.

18 . The method of claim 11 , wherein the one or more first components degrades at a first degradation rate and the one or more second components degrades at a second degradation rate that is slower than the first degradation rate.

19 . A system comprising:
a tool string connected to a derrick and extending through a surface into a wellbore in a subterranean formation; and a wellbore isolation device that provides a plurality of components including one or more first components and one or more second components,
wherein at least the first and second one or more components are made of a degradable metal material that degrades when exposed to a wellbore environment, and
wherein the one or more first components is fabricated by a first fabrication method and the one or more second components is fabricated by a second fabrication method.

20 . The system of claim 19 , wherein the first fabrication method and the second fabrication method are selected from the group consisting of casting, forging, extruding, stamping, sintering, molding, rolling, pressing, printing, and any combination thereof.

Assignees

• Halliburton Energy Services Inc
• Halliburton Energy Services Inc

Inventors

• Walton Zachary William
• Fripp Michael Linley

Classifications

• E21B33/134 Primary

  Bridging plugs · CPC title

• E21B33/1208

  characterised by the construction of the sealing or packing means (E21B33/1277 takes precedence) · CPC title

• E21B33/129

  with mechanical slips for hooking into the casing (E21B33/122, E21B33/124 take precedence) · CPC title

• E21B33/12 Primary

  Packers; Plugs (used for cementing E21B33/134, E21B33/16) · CPC title