Device for acquiring seismic data in a borehole and transmission

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging

Patent

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367 13, 340860, 364422, G01V 140

Patent

active

048624250

ABSTRACT:
A device is provided for acquiring data coming from sensors distributed in several probes which may be anchored in a well or borehole and transmission thereof to a central control and recording system, including a remote control assembly for checking operating parameters. An acquisition apparatus includes a main multiplexer for seismic channels and an auxiliary multiplexer. The control assembly includes different modules delivering signals indicative of the position of the anchorage arms, of the operating temperature, of the power supply voltage, etc, means for testing the sensors and the seismic channels, and means for detecting any malfunction in the advance of the probes along the borehole. Different lines connected to the auxiliary multiplexer transmit the signals delivered by the control assembly.

REFERENCES:
patent: 4428422 (1984-01-01), Laurent
patent: 4556884 (1985-12-01), Howells et al.
patent: 4616703 (1986-10-01), Laurent et al.

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