Determining electrical characteristics of an electrical cable
First Claim
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1. A method of characterizing an electrical cable that is deployed in a well, comprising:
- applying a voltage input to the electrical cable at an earth surface location, wherein the well extends from the earth surface location;
measuring a current response in the electrical cable resulting from the voltage input, wherein the current response is measured at the earth surface location;
computing at least one parameter of the electrical cable according to the measured current response; and
updating the at least one parameter to account for a change in a characteristic of the electrical cable as a result of operation of a load system connected to the electrical cable;
wherein computing comprises computing the resistance of the electrical cable and updating comprises updating the resistance; and
wherein computing the resistance comprises computing an exact resistance according to;
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Abstract
To characterize an electrical cable that is deployed in a well, a voltage input is applied to the electrical cable at an earth surface location, where the well extends from the earth surface location. A current response resulting from the voltage input is measured at the earth surface location. At least one parameter of the electrical cable is computed according to the measured current response.
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Citations
12 Claims
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1. A method of characterizing an electrical cable that is deployed in a well, comprising:
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applying a voltage input to the electrical cable at an earth surface location, wherein the well extends from the earth surface location; measuring a current response in the electrical cable resulting from the voltage input, wherein the current response is measured at the earth surface location; computing at least one parameter of the electrical cable according to the measured current response; and updating the at least one parameter to account for a change in a characteristic of the electrical cable as a result of operation of a load system connected to the electrical cable; wherein computing comprises computing the resistance of the electrical cable and updating comprises updating the resistance; and wherein computing the resistance comprises computing an exact resistance according to; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification