Slickline manufacturing techniques

Patent metadata

Field	Value
Publication number	US-2016293298-A1
Application number	US-201514678270-A
Country	US
Kind code	A1
Filing date	Apr 3, 2015
Priority date	Apr 3, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A technique for manufacturing slickline with a jacket of enhanced bonding. The technique may include roughening an outer surface of a metal core and applying an initial insulating polymer layer to the roughened core in a non-compression manner such as by tubing extrusion. The insulated core may then be heated and run through a set of shaping rollers. Thus, the grip between the polymer and the underlying metal core may be enhanced at a time following the initial placement of the polymer on the core. In this manner, processing damage to the underlying core surface which might adversely affect maintaining the grip may be minimized. Other techniques such as powder spray delivery of the initial polymer layer may also be utilized in a similar manner.

First claim

We claim:

1 . A method of manufacturing a jacketed metal line, the method comprising:
roughening an outer surface of a metal core of the line; applying an insulating polymer layer to the roughened core via a non-compression technique; exposing the insulated core to a heat source for at least partially melting the polymer layer; and running the melted polymer insulated roughened core through a set of shaping rollers.

2 . The method of claim 1 wherein the insulating polymer layer is a first polymer layer of between about 0.001 and about 0.010 inches in thickness, the method further comprising:
applying a second polymer layer over the first polymer layer; and
running the first and second polymer layered core through another set of shaping rollers. Tie layer claim/s needed (between polymer/metal and polymer/polymer)

3 . The method of claim 2 further comprising exposing the first polymer layered core to a heat source prior to the applying of the second polymer layer.

4 . The method of claim 2 wherein the applying of the second polymer layer is achieved by compression extrusion.

5 . The method of claim 2 further comprising providing a tie layer between the metal core and the first polymer layer, between the first polymer layer and the second polymer layer, or both.

6 . The method of claim 1 wherein the non-compression technique is a tubing extrusion technique.

7 . The method of claim 1 further comprising controlling the cooling of the polymer insulated roughened core.

8 . The method of claim 1 wherein the roughening of the outer surface is achieved by one of arc spraying, abrasive blasting, and electrolytic plasma coating.

9 . The method of claim 8 wherein the arc spraying comprises:
charging wires of metal based material; and
spraying molten droplets of the charged metal based material onto the heated core for the roughening.

10 . The method of claim 8 wherein the abrasive blasting comprises:
sandblasting the heated core with a fine-grit medium for the roughening.

11 . The method of claim 8 wherein the electrolytic plasma coating comprises:
charging the metal core; and running the core through a liquid bath of oppositely charged metals for bonding to the surface of the charged core for the roughening.

12 . A method of manufacturing a jacketed metal line, the method comprising:
charging a metal core of the line; powder coating the charged line with an oppositely charged insulating polymer; exposing the insulated core to a heat source for at least partially melting the polymer; and running the melted polymer insulated core through a set of shaping rollers.

13 . The method of claim 12 wherein the melted insulating polymer is a first polymer layer of between about about 0.001 and about 0.010 inches on the core, the method further comprising: heating the shaped insulated core;
applying a second polymer layer over the first polymer layer via compression extrusion; and
running the first and second polymer layered core through another set of shaping rollers.

14 . A method of using a polymer jacketed metal line in a wellbore comprising:
providing a polymer jacketed metal line, the metal line comprising
a metal core;
a first non-compression applied polymer layer of between about about 0.001 and about 0.010 inches about the metal core; and
a second compression applied polymer layer about the first layer;
disposing the metal line in the wellbore; and performing at least one downhole application in the wellbore with the metal line.

15 . The method of claim 14 wherein the metal core is one of a roughened metal core and a charged metal core to enhance bonding with the first non-compression applied polymer layer.

16 . The method of claim 14 wherein the line is one of slickline, cladded line, wire rope, armored cable, coiled tubing, casing, monitoring cable and a metallic tube.

17 . The method of claim 14 wherein performing at least one downhole application in the wellbore comprises performing at least one of a sampling, fishing, clean-out, setting, stimulation, logging, perforating, and a mechanical services application.

18 . The method of claim 14 further comprising a third polymer layer having reinforcing additive therein and positioned about the second polymer layer.

19 . The method of claim 14 wherein at least one of the polymer layers comprises a material selected from a group consisting of polyetheretherketone, a fluoropolymer and a polyolefin.

20 . The method of claim 14 wherein the polymer layers comprises a reinforcing additive, a bonding facilitating polymer additive, a virgin polymer, SFF-PEEK, Doped PEEK, or combinations thereof.

Assignees

• Schlumberger Technology Corp

Inventors

• Varkey Joseph
• Altintas Burcu Unal
• Yun Jushik
• Yang Dong
• Chang Sheng
• Singh Ramnik

Classifications

• C23C4/18

  After-treatment · CPC title

• B05D1/007

  using an electrostatic field (B05D1/02 - B05D1/16 take precedence) · CPC title

• H01B13/227 Primary

  Pretreatment · CPC title

• E21B23/14

  for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells · CPC title

• C25D5/04

  Electroplating with moving electrodes · CPC title