Mobile seismic system of great length for wells

Details Mobile seismic system of great length for wells Mobile seismic system of great length for wells

1993-06-14

1996-08-27

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367911, 181102, 3408563, G01V 140, G01V 326, E21B 4700

Patent

active

055507859

ABSTRACT:
The mobile seismic system according to the invention is made up by interconnecting reception sections (T1) and of anchoring sections (T2), and possibly emission sections, the assembly being suspended in the well by means of an electro-carrying cable (3). The first sections (T1), which are filled with liquid, are delimited at least partly by a wall transparent to acoustic waves. They contain each one or several hydrophones and an electronic module of acquisition of the signals picked up. The second sections (T2) comprise a body provided with retractable anchoring means (13) and with motor means, either autonomous, or connected, by a hydraulic line running along the reception system, to common motor means located preferably in a lower section so as to be used as a ballast weight. The reception system may be continuous or made up of several parts connected to each other by electric or electro-hydraulic linking means. The system is suitable for seismic prospecting in wells for example.

REFERENCES:
patent: 4578789 (1986-03-01), Gelfand
patent: 4693335 (1987-09-01), Alman
patent: 4811814 (1989-03-01), Staron et al.
patent: 5016727 (1991-05-01), Wittrisch
patent: 5092423 (1992-03-01), Petermann
patent: 5189262 (1993-02-01), Engler et al.
patent: 5200581 (1993-04-01), Boyle et al.
patent: 5243562 (1993-09-01), Laurent et al.
patent: 5318129 (1994-06-01), Wittrisch

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