| CPC E21B 47/20 (2020.05) | 20 Claims |
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1. A computer-implemented downhole telemetry method, comprising:
generating a first pulse waveform based on an initial pilot signal of the first pulse waveform that is iteratively adjusted using a stretch factor signal to affect distortion through a mud channel in performing mud pulse telemetry using a first controller communicably coupled to a downhole pulser, the first pulse waveform having a first pulse width;
propagating the first pulse waveform along a wellbore through the mud channel;
detecting the first pulse waveform at a second controller;
estimating the distortion of the mud channel based on the detected first pulse waveform in relation to the stretch factor signal;
determining whether the channel estimate meets a quality threshold;
responsive to a determination the channel estimate does not meet the quality threshold:
iteratively adjusting the stretch factor signal to generate an adjusted stretch factor signal; and
transmitting the adjusted stretch factor signal from the second controller to the first controller to adjust the first pulse width to a second pulse width;
generating a second pulse waveform having the second pulse width based on the adjusted stretch factor signal using the first controller;
propagating the second pulse waveform along the wellbore through the mud channel; and
detecting the second pulse waveform at the second controller.
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