Acoustic well logging with threshold adjustment

Communications: electrical – Selective – Having electron beam device

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

328165, 328168, 340 155AC, 340 155GC, G01V 140

Patent

active

040400018

ABSTRACT:
Acoustic well-logging methods and apparatus are provided for investigating earth formations traversed by a borehole. Acoustic waves are transmitted from different points in the borehole and received at other points in the borehole, and a reception signal is generated representative of the received acoustic waves. The time interval between the instant the measurement waves are transmitted and the instant the instantaneous amplitude of the reception signal exceeds a given detection threshold for the first time is measured as a function of depth and the value of the detection threshold is adjusted during each measurement sequence in accordance with the amplitude of the noise received during the next preceding listening interval.

REFERENCES:
patent: 3289157 (1966-11-01), Brokaw
patent: 3437834 (1969-04-01), Schwartz
patent: 3475685 (1969-10-01), Covill
patent: 3576564 (1971-04-01), Galven
patent: 3618001 (1971-11-01), Zill et al.
patent: 3676842 (1972-07-01), Lee
patent: 3728672 (1973-04-01), Dennis et al.
patent: 3828262 (1974-08-01), Trocqueme
patent: 3832577 (1974-08-01), Harr
patent: 3944942 (1976-03-01), Chudleigh, Jr.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Acoustic well logging with threshold adjustment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acoustic well logging with threshold adjustment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic well logging with threshold adjustment will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2303063

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.