Acoustic logging in low velocity formations

Details Acoustic logging in low velocity formations Acoustic logging in low velocity formations

1984-06-07

1986-09-16

Jordan, Charles T.

Acoustics

Geophysical or subsurface exploration

Well logging

367 32, 367 36, G01V 140, G01V 100

Patent

active

046116850

ABSTRACT:
Acoustic logging of low velocity formations is made possible by the introduction of gas bubbles in the liquid in a borehole where logging equipment is present. Acoustic logging cannot be performed where the compressional wave velocity in the borehole liquid exceeds the compressional wave velocity in the formation to be logged because in such case, the acoustic compressional waves do not refract in the formation. The gas bubbles are introduced to lower the compressibility of the borehole liquid, resulting in a decreased velocity in the liquid so that refraction of the compressional waves can take place, making acoustic logging feasible.

REFERENCES:
patent: 2310559 (1943-02-01), Walker
patent: 2635705 (1953-04-01), Haggerty
patent: 2771960 (1956-11-01), Smith
patent: 3054471 (1962-09-01), Knudsen
patent: 3126976 (1964-03-01), Cordell et al.
patent: 4038631 (1977-07-01), Murphy
Silberman, E., "Sound Velocity and Attenuation in Bubbly Mixtures Measured in Standing Wave Tubes", Journal Acoustic Soc. 29, (1957), pp. 925-933.

Affiliated with

Also associated with

Rating

Acoustic logging in low velocity formations 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 logging in low velocity formations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic logging in low velocity formations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1990846