# US 2019/0169967 A1 · Downhole casing patch

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- Number: US 2019/0169967 A1
- Document ID: US20190169967A1
- Status: Published application
- Kind: A1
- Application number: 16/272,760
- Filed: 2019-02-11
- Published: 2019-06-06
- Earliest claimed: 2016-04-06
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Jack Gammill Clemens
- Web page: https://patentgrep.com/patent/US20190169967A1

## CPC

- E21B 43/105: {Expanding tools specially adapted therefor}
- E21B 29/10: Reconditioning of well casings, e.g. straightening
- E21B 43/103: {of expandable casings, screens, liners, or the like}
- E21B 43/122: {Gas lift}
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A casing patch includes a tubular that comprises a first end and a second end opposite the first end, each of the first end and second end comprising an expandable wedge that is deformable into a wellbore casing; and a locating profile formed onto an inner surface of the tubular between the first and second ends.

## Claims

### Claim 1

A casing patch, comprising:
a metal tubular that comprises a first end and a second end opposite the first end;
a first expandable wedge extending outwardly from the first end of the metal tubular and a second expandable wedge extending outwardly from the second end of the metal tubular, each of the first and second expandable wedges configured to deform into the wellbore casing to form a metal-to-metal seal.

### Claim 2 (depends on 1)

The casing patch of claim 1, further comprising a port comprising a fluid passage between a bore of the tubular, that extends between the first and second ends, and an outer surface of the tubular.

### Claim 3 (depends on 2)

The casing patch of claim 2, wherein the port is sized based on one or more hydrocarbon well parameters.

### Claim 4 (depends on 23)

The casing patch of claim 23, wherein the locating profile is machined into the inner surface of the tubular.

### Claim 5 (depends on 4)

The casing patch of claim 4, wherein the profile comprises a landing nipple that comprises a no-go shoulder and a seal bore.

### Claim 6

A wellbore casing patch system, comprising:
a power unit comprising a connection for a conveyance from a terranean surface through a wellbore, the power unit providing power independent of the conveyance;
a piston assembly comprising a rod coupled to the power unit and one or more wedge assemblies coupled to the rod; and
a casing patch that comprises a first end and a second end opposite the first end, each of the first and second ends comprising a wedge expandable into a wellbore casing by one of the wedge assemblies.

### Claim 7 (depends on 6)

The wellbore casing patch system of claim 6, wherein the one or more wedge assemblies coupled to the rod comprises a first wedge assembly coupled a distal end of the rod and a second wedge assembly coupled to a proximal end of the rod closest to the power unit, and both of the first and second ends comprise a respective wedge expandable by the first and second wedge assemblies.

### Claim 8 (depends on 7)

The wellbore casing patch system of claim 7, wherein the first wedge assembly is rigidly coupled to the distal end of the rod and moveable toward the second wedge assembly during a stroke of the rod, and the second wedge assembly is slideably coupled to the rod and held stationary during the stroke of the rod into the piston assembly.

### Claim 9 (depends on 8)

The wellbore casing patch system of claim 8, wherein the first and second wedge assemblies deform the respective wedges of the casing patch during the stroke of the rod.

### Claim 10 (depends on 8)

The wellbore casing patch system of claim 8, wherein the stroke of the rod comprises a stroke of the rod into the piston assembly.

### Claim 11 (depends on 6)

The wellbore casing patch system of claim 6, wherein the power unit comprises a battery that provides electrical power to the piston assembly independently of the conveyance.

### Claim 12 (depends on 6)

The wellbore casing patch system of claim 6, further comprising a locating profile formed onto an inner surface of the casing patch between the first and second ends.

### Claim 13 (depends on 6)

The wellbore casing patch system of claim 6, further comprising a port comprising a fluid passage between a bore of the casing patch, that extends between the first and second ends, and an outer surface of the casing patch.

### Claim 14 (depends on 13)

The wellbore casing patch system of claim 13, wherein the port is sized based on one or more hydrocarbon well parameters.

### Claim 15 (depends on 6)

The wellbore casing patch system of claim 6, wherein a locating profile is machined into the inner surface of the casing patch.

### Claim 16

A method, comprising:
positioning a tubular component and a deployable power unit near a portion of a wellbore casing in a wellbore;
aligning a downhole wedge assembly mounted on a piston of the deployable power unit with a downhole ramped end of the tubular component;
aligning an uphole wedge assembly mounted on the piston with an uphole ramped end of the tubular component; and
expanding the uphole ramped end and the downhole ramped end of the tubular component into the portion of the wellbore casing by urging one of the downhole wedge assembly or the uphole wedge assembly towards the other of the downhole wedge assembly or the uphole wedge assembly.

### Claim 17 (depends on 16)

The method of claim 16, further comprising:
removing at least a portion of the deployable power unit, the downhole wedge assembly, and the uphole wedge assembly from the wellbore to a terranean surface;
running a downhole tool into the wellbore; and
positioning an outer surface of the downhole tool into a profile formed on an inner surface of the tubular component.

### Claim 18 (depends on 16)

The method of claim 16, further comprising flowing a fluid through a port in the tubular component from a subterranean zone to a bore of the tubular component and to the terranean surface.

### Claim 19 (depends on 16)

The method of claim 16, wherein the tubular component comprises a casing patch.

### Claim 20 (depends on 16)

The method of claim 16, wherein expanding the tubular component into the portion of the wellbore casing by urging one of the downhole wedge assembly or the uphole wedge assembly towards the other of the downhole wedge assembly or the uphole wedge assembly comprises:
stroking the piston into the deployable power unit to urge the downhole wedge assembly against the downhole ramped end of the tubular component and towards the uphole wedge assembly;
holding the uphole wedge assembly against the uphole end of the tubular component during the stroke of the piston into the deployable power unit; and
expanding the uphole and downhole ramped ends into the portion of the wellbore basing based on the stroke of the piston into the deployable power unit.

### Claim 21 (depends on 16)

The method of claim 16, further comprising hydraulically sealing between the tubular component and the portion of the wellbore casing based on expanding the tubular component into the portion of the wellbore casing.

### Claim 22 (depends on 16)

The method of claim 16, wherein creating a hydraulic seal between the tubular component and the portion of the wellbore casing comprises deforming a portion of the downhole ramped end and a portion of the uphole ramped end into the portion of the wellbore casing to create a metal-to-metal seal.

### Claim 23 (depends on 1)

The casing patch of claim 1, further including a locating profile formed into an inner surface of the metal tubular between the first and second ends.

### Claim 24 (depends on 23)

the casing patch of claim 23, wherein the locating profile is configured as a landing spot or lock for a downhole tool.

### Claim 25 (depends on 1)

The casing patch of claim 1, wherein the first expandable wedge tapers to a first tapered edge, and the second expandable wedge tapers to a second tapered edge, and further wherein the first and second tapered edges are configured to deform into the wellbore casing to form the metal to metal seal.

### Claim 26 (depends on 1)

The casing patch of claim 1, wherein a majority of the metal tubular between the first expandable wedge and the second expandable wedge is not configured to deform into the wellbore casing, thereby leaving a space between the majority and the wellbore casing.