Two-component acoustic borehole tool

Details Two-component acoustic borehole tool Two-component acoustic borehole tool

1983-06-06

1986-03-25

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

181105, 367911, 166250, G01V 140, E21B 4700

Patent

active

045787859

ABSTRACT:
An acoustic borehole tool consists of two components: A first component containing power supplies, signal processing and control electronics and a sidewall locking mechanism. A second component includes a seismic sensor and a clamping device for pressing the sensor against the sidewall of a borehole. The weight of the second component is a small fraction of the weight of the first component so that the force exerted by the clamping device is less than a preselected limiting value and so that the clamping force/mass ratio may reach large value without danger of destroying the borehole.

REFERENCES:
patent: 2846662 (1982-12-01), Bright
patent: 4082144 (1978-04-01), Marquis
patent: 4349072 (1982-09-01), Escaron et al.
patent: 4365668 (1958-08-01), Sparks
patent: 4450539 (1984-05-01), Bright
The Vertical Array in Reflection Seismology-Some Experimental Studies, Wuenschel, Paul C., Geophysics, vol. 41, No. 2, pp. 219-232.
Vertical Seismic Profiling, Gal'Perin, Published by Society of Exploration Geophysicists, Tulsa, OK, 1974.

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