Advanced insulation and jacketing for downhole power and motor lead cables
AssigneeBaker Hughes Oilfield Operations LLC
InventorsAmiya Tripathy, Dennis Matuszak, David Livingston, Shawn Gunter
Life of this patent
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Abstract
An electric submersible pumping system includes a motor, a pump driven by the motor, and a cable that provides electrical power to the motor. The cable includes a conductor and an insulator surrounding the conductor. The insulator includes a first layer surrounding the conductor and a second layer surrounding the first layer. The insulator may include an H2S scavenger and an H2S reactant in the first or second layers surrounding the conductor. The cable optionally includes a sub-insulator layer that includes a metal or nitride coating applied directly to the conductor.
Claims19
An electric submersible pumping system configured for operation in downhole applications, the electric submersible pumping system comprising:
- a motor;
- a pump driven by the motor;
- and
- a cable that provides electrical power to the motor, wherein the cable comprises:
- a conductor;
- and
- an insulator surrounding the conductor, wherein the insulator comprises:
- a first layer;
- a second layer surrounding the first layer;
- an H2S scavenger within the first layer or the second layer of the insulator;
- and
- an H2S reactant or mixture of reactants within the first layer or the second layer of the insulator;
- and
- a sub-insulator layer between the conductor and the insulator.
An electric submersible pumping system configured for operation in downhole applications, the electric submersible pumping system comprising:
- a motor;
- a pump driven by the motor;
- and
- a cable that provides electrical power to the motor, wherein the cable comprises:
- a conductor;
- and
- an insulator surrounding the conductor, wherein the insulator comprises:
- a first layer;
- a second layer surrounding the first layer;
- an H2S scavenger within the first layer or the second layer of the insulator;
- and
- an H2S reactant within the first layer or the second layer of the insulator;
- and
- a sub-insulator layer between the conductor and the insulator, wherein the sub-insulator layer comprises a coating applied directly to the conductor and wherein the coating is selected from the group consisting of metal coatings and nitride coatings.
A cable for use in an electric submersible pumping system configured for operation in downhole applications, the cable comprising:
- a conductor;
- an insulator surrounding the conductor, wherein the insulator comprises:
- a first layer;
- a second layer surrounding the first layer;
- wherein the insulator comprises an H2S scavenger in the first or second layer of the insulator;
- and
- wherein the insulator comprises an H2S reactant in the first or second layer of the insulator;
- and
- a sub-insulator layer between the conductor and the insulator.
Dependencies are inferred from the claim text.