Patent ID: 9657564
Date: 2017-05-23
CPC Classifications: E21B,G01V,H03M

Claim:
1. A seismic while drilling system comprising: a drill string having at least one seismic sensor; an embedded processor that digitizes a signal from the seismic sensor to obtain a digital waveform and processes the digital waveform to derive a compressed waveform representation for storage or transmission, the compressed waveform representation having an adjusted sampling rate and adjusted quantization relative to the digital waveform, the adjusted sampling rate and adjusted quantization being adaptive based on a measure of distortion between the digital waveform and the compressed waveform representation; and a surface computer system that derives a distortion measure comprising a weighted average or weighted sum of at least two perceptual parameters; wherein each of the at least two perceptual parameters is associated with a weight, and the perceptual parameters are selected from the group consisting of: first break characteristics, peak amplitude of principle reflections, sign of principle reflections, general shape of the digital waveform, arrival time and amplitude of Stoneley Waves, sign accuracy of the first break point, and the end of a seismic waveform received by the seismic sensor.