Wellbore line coating repair

Patent metadata

Field	Value
Publication number	US-10439375-B2
Application number	US-201415118387-A
Country	US
Kind code	B2
Filing date	Apr 14, 2014
Priority date	Apr 14, 2014
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

Assemblies and methods of use are disclosed for repairing the coating of a coated wellbore line. A wellbore line can be cleaned and then coated with a repair material before being pulled through a die to shape the coating and then being pulled through setting section to set the repair material. The repair material can be a thermoplastic material that is set by cooling, or a thermoset material that is set by heating. The wellbore line can be repaired upon exiting a wellbore or being unspooled from a reel.

First claim

What is claimed is:

1. A wellbore line coating repair system, comprising:
a housing having an entry opening, an exit opening, and a wellbore line pathway defined between the entry opening and the exit opening;
at least one cleaning element selected from the group consisting of a mechanical cleaner, a chemical cleaner, and an acoustic cleaner, the at least one cleaning element positioned within the housing and in contact with the wellbore line pathway; and
a coating chamber located along the wellbore line pathway, the coating chamber in fluid communication with a coating input port, wherein the coating chamber is positioned on a wellbore line and is configured to coat a wellbore line during removal of the wellbore line from a wellbore or during insertion of the wellbore line into the wellbore.

2. The system of claim 1 , additionally comprising a die section located along the wellbore line pathway.

3. The system of claim 2 , additionally comprising a setting section located along the wellbore line pathway after the die section, the setting section having a setting fluid passage separated from the wellbore line pathway by a thermally conductive material.

4. The system of claim 2 , additionally comprising a setting section located along the wellbore line pathway before the die section, the setting section having a setting fluid passage separated from the wellbore line pathway by a thermally conductive material.

5. The system of claim 1 , wherein the coating chamber is in fluid communication with the coating input port through a spray jet positioned within the coating chamber.

6. The system of claim 1 , additionally comprising a heating section positioned along the wellbore line pathway and having a heat source separated from the wellbore line pathway by a thermally conductive material.

7. The system of claim 1 , additionally comprising a reservoir in fluid communication with the coating input port.

8. The system of claim 7 , wherein the coating chamber is shaped to maintain a bath of repair material in contact with the wellbore line pathway.

9. The system of claim 7 , additionally comprising a contamination detection sensor positioned within one of the reservoir and the coating chamber.

10. The system of claim 1 , additionally comprising a contamination detection sensor positioned along the wellbore line pathway after the coating chamber.

11. The system of claim 1 , wherein the at least one cleaning element includes the mechanical cleaner and the chemical cleaner.

12. A system, comprising:
a housing having an entry opening, an exit opening, and a wellbore line pathway defined between the entry opening and the exit opening, wherein the housing is removably positioned on a wellbore line while at least a portion of the wellbore line is located within a wellbore;
a cleaning section positioned in the housing, the cleaning section including at least one cleaning element selected from the group consisting of a mechanical cleaner, a chemical cleaner, and an acoustic cleaner, the at least one cleaning element in contact with the wellbore line pathway;
a heating section positioned in the housing and having a heat source separated from the wellbore line pathway by a first thermally conductive material;
a die section located along the wellbore line pathway; and
a setting section located along the wellbore line pathway adjacent the die section, the setting section including a setting fluid passage separated from the wellbore line pathway by a second thermally conductive material.

13. The system of claim 12 , additionally comprising:
a coating chamber located along the wellbore line pathway, the coating chamber in fluid communication with a coating input port;
a reservoir in fluid communication with the coating input port; and
a contamination detection sensor positioned along the wellbore line pathway after the coating chamber, the coating chamber, or the reservoir.

14. The system of claim 13 , wherein the reservoir is in fluid communication with the coating input port through a spray jet positioned within the coating chamber.

15. The system of claim 13 , wherein the coating chamber is shaped to maintain a bath of repair material in contact with the wellbore line pathway.

16. The system of claim 13 , further comprising a second contamination detection sensor positioned within one of the reservoir and the coating chamber.

17. The system of claim 12 , wherein the setting section is located along the wellbore line pathway before the die section.

18. The system of claim 12 , wherein the setting section is located along the wellbore line pathway after the die section.

19. The system of claim 12 , wherein the setting section comprises a heating section having a heat source separated from the wellbore line pathway by the second thermally conductive material.

20. The system of claim 12 , wherein the at least one cleaning element includes the mechanical cleaner and the chemical cleaner.

Assignees

• Halliburton Energy Services Inc

Inventors

• Thomas Sean Gregory

Classifications

• H02G1/16 Primary

  for repairing insulation or armouring of cables · CPC title

• B05C3/12

  for treating work of indefinite length · CPC title

• E21B19/00

  Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables · CPC title

• E21B12/00 Primary

  Accessories for drilling tools · CPC title

• B05C3/15

  not supported on conveying means ({B05C3/125 takes precedence}; web or filament feeding arrangements B65H) · CPC title