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.
30 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