# US 7,607,480 B2 · Method for repair of damaged wells

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- Number: US 7,607,480 B2
- Document ID: US7607480B2
- Status: Granted
- Kind: B2
- Application number: 11/986,870
- Filed: 2007-11-27
- Published: 2009-05-28
- Granted: 2009-10-27
- Earliest claimed: 2007-11-27
- Inventors: Clayton John Domingue; Loren Scott Truby
- Web page: https://patentgrep.com/patent/US7607480B2

## CPC

- E21B 29/08: Cutting or deforming pipes to control fluid flow
- E21B 29/10: Reconditioning of well casings, e.g. straightening
- E21B 29/12: specially adapted for underwater installations (E21B29/08 takes precedence)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

A method for repairing damaged wells, especially in marine environments utilizing an alignment apparatus having a substantially cylindrical body member, a lower spear extension and a plurality of blades extending radially outward from the body member and spear extension. The alignment apparatus is concentrically inserted into the upper opening of a damaged well having a substantially vertical orientation. The alignment apparatus serves as an alignment guide for larger diameter pipe to be installed (typically driven) around a portion of the well to provide structural integrity to the well, as well as to serve as a conduit into the well for subsequent operations.

## Claims

### Claim 1

A method for repairing a damaged well having a bend near its upper end comprising the steps of:
a) cutting said well below said bend to define an upper opening of said well:
b) placing an alignment apparatus in said upper opening of said well, wherein said alignment apparatus further comprises:
i) a substantially cylindrical body member having an upper end and a lower end
ii) a substantially planar plate member having a top, a bottom and an outer diameter, wherein said top is connected to said lower end of said substantially cylindrical body member, and said substantially planar plate is oriented perpendicular to the longitudinal axis of said substantially cylindrical body member;
iii) an elongate extension having an upper end, a lower end and an outer diameter, wherein said upper end is connected to the bottom of said plate, and said elongate extension has a smaller outer diameter than the outer diameter of said substantially planar plate member; and
iv) at least one fin, wherein said at least one fin extends radially outward from said elongate extension, and is oriented substantially parallel to the longitudinal axis of said elongate extension;
c) installing pipe around said alignment apparatus and a portion of said well; and
d) removing said alignment apparatus from said pipe.

### Claim 2 (depends on 1)

The method of claim 1, wherein said alignment apparatus further comprises a cap having an upper surface and a lower surface, wherein said cap is removably attached to the upper end of said substantially cylindrical body.

### Claim 3 (depends on 2)

The method of claim 2, wherein said cap further comprises a threaded connection disposed on the upper surface of said cap.

### Claim 4

A method for repairing a damaged well having a bend near its upper end comprising the steps of:
a) excavating earth from the outer surface of said well below said bend;
b) cutting said well below said bend to define an upper opening of said well;
c) placing an alignment apparatus in said upper opening of said well, wherein said alignment apparatus further comprises:
i) a substantially cylindrical body member having an upper end and a lower end;
ii) a substantially planar plate member having a top, a bottom and an outer diameter, wherein said top is connected to said lower end of said substantially cylindrical body member, and said substantially planar plate is oriented perpendicular to the longitudinal axis of said substantially cylindrical body member;
iii) an elongate extension having an upper end, a lower end and an outer diameter, wherein said upper end is connected to the bottom of said plate, and said elongate extension has a smaller outer diameter than the outer diameter of said substantially planar plate member; and
iv) least one fin, wherein said at least one fin extends radially outward from said elongate extension, and is oriented substantially parallel to the longitudinal axis of said elongate extension;
d) installing pipe around said alignment apparatus and a portion of said well;
e) removing said alignment apparatus from said pipe; and
f) conducting operations in said well.

### Claim 5 (depends on 4)

The method of claim 4, wherein said alignment apparatus further comprises a cap having an upper surface and a lower surface, wherein said cap is removably attached to the upper end of said substantially cylindrical body.

### Claim 6 (depends on 5)

The method of claim 5, wherein said cap further comprises a threaded connection disposed on the upper surface of said cap.