Casing joint assembly

Patent metadata

Field	Value
Publication number	US-2016258227-A1
Application number	US-201414441260-A
Country	US
Kind code	A1
Filing date	Jun 16, 2014
Priority date	Jun 16, 2014
Publication date	Sep 8, 2016
Grant date	—

Abstract

An example casing joint assembly includes a casing joint having an upper end and a lower end, an upper coupling joint having a first portion configured to be coupled to an upper casing section and a second portion coupled to the casing joint at the upper end, a joint interface securing the first portion to the second portion, wherein the first portion is made of a first material and the second portion is made of a second material dissimilar to the first material, and an inner coating applied on an inner radial surface of the upper coupling joint and extending axially across at least the joint interface.

First claim

1 . A casing joint assembly, comprising:
a casing joint having an upper end and a lower end; an upper coupling joint having a first portion configured to be coupled to an upper casing section and a second portion coupled to the casing joint at the upper end; a joint interface securing the first portion to the second portion, wherein the first portion is made of a first material and the second portion is made of a second material dissimilar to the first material; and an inner coating applied on an inner radial surface of the upper coupling joint and extending axially across at least the joint interface.

2 . The casing joint assembly of claim 1 , wherein the first portion is threadably attached to the upper casing section and the second portion is threadably attached to the upper end of the casing joint.

3 . The casing joint assembly of claim 1 , wherein the first material is selected from the group consisting of stainless steel and a nickel alloy.

4 . The casing joint assembly of claim 1 , wherein the second material is selected from the group consisting of aluminum, an aluminum alloy, copper, a copper alloy, a magnesium alloy, titanium, free-cutting steel, cast iron, a low carbon steel alloy, and any combinations thereof.

5 . The casing joint assembly of claim 1 , wherein the inner coating is at least one of an anodized coating, a ceramic, a metal, a polymer, an epoxy, an elastomer, molybdenum sulfide, tungsten carbide, a fluoropolymer, an electrostatic powder, and any combination thereof.

6 . The casing joint assembly of claim 1 , wherein the joint interface is formed by at least one of explosively welding and friction stir welding the first portion to the second portion.

7 . The casing joint assembly of claim 1 , wherein the joint interface is a threaded interface where the first portion is threadably attached to the second portion.

8 . The casing joint assembly of claim 7 , further comprising one or more sealing members arranged within the threaded interface to prevent an influx of fluids into the threaded interface.

9 . The casing joint assembly of claim 7 , further comprising a thread coating applied to the threaded interface, the thread coating comprising a material selected from the group consisting of an anodized material, a ceramic, a metal, a polymer, an epoxy, an elastomer, molybdenum sulfide, tungsten carbide, a fluoropolymer, an electrostatic powder, a thread-locking compound, and any combination thereof.

10 . The casing joint assembly of claim 1 , further comprising:
a lower coupling joint having a lower first portion configured to be coupled to a lower casing section and a lower second portion coupled to the casing joint at the lower end; and a second joint interface securing the lower first portion to the lower second portion, wherein the lower first portion is made of the first material and the lower second portion is made of the second material.

11 . A well system, comprising:
a string of casing arranged within a wellbore and having an upper casing section and a lower casing section; a casing joint arranged within the wellbore and interposing the upper and lower casing sections, the casing joint having an upper end and a lower end; an upper coupling joint having a first portion coupled to the upper casing section and a second portion coupled to the upper end of the casing joint, wherein the first and second portions of the upper coupling joint are secured together at an upper joint interface; a lower coupling joint having a first portion coupled to the lower casing section and a second portion coupled to the lower end of the casing joint, wherein the first and second portions of the lower coupling joint are secured together at a lower joint interface; and an inner coating applied on corresponding inner radial surfaces of the upper and lower coupling joints and extending axially across at least the upper and lower joint interfaces, wherein each first portion of the upper and lower coupling joints is made of a first material and each second portion of the upper and lower coupling joints is made of a second material dissimilar to the first material.

12 . The well system of claim 11 , wherein the first material is selected from the group consisting of stainless steel and a nickel alloy.

13 . The well system of claim 11 , wherein the second material is selected from the group consisting of aluminum, an aluminum alloy, copper, a copper alloy, a magnesium alloy, titanium, free-cutting steel, cast iron, a low carbon steel alloy, and any combinations thereof.

14 . The well system of claim 11 , wherein the inner coating is at least one of an anodized coating, a ceramic, a metal, a polymer, an epoxy, an elastomer, molybdenum sulfide, tungsten carbide, a fluoropolymer, an electrostatic powder, and any combination thereof.

15 . The well system of claim 11 , wherein the upper and lower joint interfaces are formed by at least one of explosively welding and friction stir welding the first portion to the second portion.

16 . The well system of claim 11 , wherein at least one of the upper and lower joint interfaces is a threaded interface where the first portion is threadably attached to the second portion.

17 . The well system of claim 16 , further comprising at least one of one or more sealing members arranged within the threaded interface and a thread coating applied to the threaded interface.

18 . A method, comprising:
arranging a string of casing within a wellbore, the string of casing having an upper casing section, a lower casing section, and a casing joint interposing the upper and lower casing sections, wherein the casing joint has an upper end and a lower end; and galvanically-isolating the casing joint from the upper and lower casing sections with an upper coupling joint and a lower coupling joint, the upper coupling joint having a first portion coupled to the upper casing section and a second portion coupled to the upper end of the casing joint, and the lower coupling joint having a first portion coupled to the lower casing section and a second portion coupled to the lower end of the casing joint, wherein the first and second portions of the upper and lower coupling joints are each secured together at corresponding joint interfaces, and wherein each first portion of the upper and lower coupling joints is made of a first material and each second portion of the upper and lower coupling joints is made of a second material dissimilar to the first material.

19 . The method of claim 18 , wherein galvanically-isolating the casing joint from the upper and lower casing sections further comprises sealing corresponding inner radial surfaces of the upper and lower coupling joints with an inner coating applied on and extending axially across at least the upper and lower joint interfaces.

20 . The method of claim 18 , wherein the first material is at least one of stainless steel and a nickel alloy, and wherein the second material is selected from the group consisting of aluminum, an aluminum alloy, copper, a copper alloy, a magnesium alloy, titanium, free-cutting steel, cast iron, a low carbon steel alloy, and any combinations thereof.

21 . The method of claim 19 , wherein the inner coating is at least one of an anodized coating, a ceramic, a metal, a polymer, an epoxy, an elastomer, molybdenum sulfide, tungsten carbide, a fluoropolymer, an electrostatic powder, and any combination thereof.

22 . The method of claim 18 , further comprising form

Assignees

• Halliburton Energy Services Inc

Inventors

• Vemuri Srinivasa Prasanna

Classifications

• F16L15/04

  with additional sealings · CPC title

• E21B17/042 Primary

  Threaded · CPC title

• F16L15/00

  Screw-threaded joints; Forms of screw-threads for such joints · CPC title

• F16L2201/40

  for special environments · CPC title

• E21B17/02 Primary

  Couplings; joints {(expandable couplings or joints E21B43/106)} · CPC title