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US 9,435,973 B2Granted
Optical fiber coating to prevent adhesion at high temperatures
AssigneeWeatherford Technology Holdings, LLC
InventorsEdward M. Dowd, Domino Taverner, John J. Grunbeck
Life of this patent
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Abstract
Embodiments of the present invention provide methods and apparatus for cables having one or more fibers that may function as a sensing device within a wellbore, wherein the fibers do not adhere to each other or to an inner wall of the cable during a high temperature operation, such as in a thermal recovery operation that may last over 30 days.
Claims15
A method comprising:
- applying a high-temperature-rated substance to one or more fibers;
- and
- deploying the one or more fibers into a tube to provide a cable, wherein the substance is configured to prevent the one or more fibers from adhering to each other or to an inner wall of the cable during a high temperature operation, and wherein the high-temperature-rated substance comprises a highly-cured polyimide coating.
A method comprising:
- providing a cable with one or more fibers;
- and
- filling the cable with a high-temperature-rated substance, wherein the substance is configured to prevent the one or more fibers from adhering to each other or to an inner wall of the cable during a high temperature operation, and wherein the high-temperature-rated substance comprises a highly-cured polyimide coating.
A cable suitable for a high temperature operation, comprising:
- a tube;
- one or more fibers disposed in the tube;
- and
- a high-temperature-rated substance disposed over the one or more fibers, wherein the one or more fibers do not adhere to each other or to an inner wall of the cable during the high temperature operation, and wherein the high-temperature-rated substance comprises a highly-cured polyimide coating.
1 more element
Dependencies are inferred from the claim text.