Borehole acoustic logging system having automatic reflection sig

Details Borehole acoustic logging system having automatic reflection sig Borehole acoustic logging system having automatic reflection sig

1990-02-06

1991-01-08

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 25, 367 95, G01V 140

Patent

active

049842218

ABSTRACT:
A borehole televiewer employs a transducer energized by repetitive voltage pulses for generating pulses of acoustic energy for transmission to the walls of a borehole and for detecting direct reflections of acoustic energy from the borehole walls. A detector converts the acoustic energy reflections into reflection signals. Those reflection signals are applied along with a reference signal representing a desired constant level for the peak amplitude of the reflection signals to an error amplifier. The output of the error amplifier controls the voltage pulses utilized to energize the transducer so as to maintain a constant level of peak amplitude for the reflection signals produced from the detected acoustic energy direction reflections from the borehole wall.

REFERENCES:
patent: 2813590 (1957-11-01), McDonald
patent: 2849075 (1958-08-01), Godbey
patent: 3340953 (1967-09-01), Zemanek, Jr.
patent: 3369626 (1968-02-01), Zemanek
patent: 3371313 (1968-02-01), Zemanek, Jr.
patent: 3478839 (1969-11-01), Zemanek, Jr.
patent: 3485317 (1969-12-01), Patel
patent: 3503038 (1970-03-01), Baldwin
patent: 3517768 (1970-06-01), Straus
patent: 3518679 (1970-06-01), Baldwin et al.
patent: 3718204 (1973-02-01), Groenendyke
patent: 3728672 (1973-04-01), Dennis et al.
patent: 4733380 (1988-03-01), Hevira
patent: 4779243 (1988-10-01), West
patent: 4780857 (1988-10-01), Lyle et al.

Affiliated with

Also associated with

Rating

Borehole acoustic logging system having automatic reflection sig does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Borehole acoustic logging system having automatic reflection sig, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Borehole acoustic logging system having automatic reflection sig will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-941040