Annulus pressure operated well monitoring
First Claim
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1. A method of communicating between a downhole system and a remote location using intermittent electrical power, the method comprising the steps of:
- receiving in the downhole system a series of spaced apart transmissions of electrical power, the system being powered by the electrical power transmissions;
setting a first telemetry bit to indicate a first bit value of a first byte of data in response to a first one of the electrical power transmissions;
communicating the first bit value to the remote location;
setting a second telemetry bit to indicate a second bit value of the first byte of data in response to a second one of the electrical power transmissions; and
communicating the second bit value to the remote location.
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Abstract
A method is provided for monitoring a well. In a described embodiment, the method uses annulus pressure to communicate between a downhole system and a remote location. The method may use intermittent electrical power generated by changes in annulus pressure to power the downhole system. Various sensors and well tools may be monitored and actuated by the downhole system, and acquired data may be transmitted to the remote location.
32 Citations
21 Claims
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1. A method of communicating between a downhole system and a remote location using intermittent electrical power, the method comprising the steps of:
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receiving in the downhole system a series of spaced apart transmissions of electrical power, the system being powered by the electrical power transmissions; setting a first telemetry bit to indicate a first bit value of a first byte of data in response to a first one of the electrical power transmissions; communicating the first bit value to the remote location; setting a second telemetry bit to indicate a second bit value of the first byte of data in response to a second one of the electrical power transmissions; and communicating the second bit value to the remote location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification