Method and apparatus for generating low frequency acoustic energ

Details Method and apparatus for generating low frequency acoustic energ Method and apparatus for generating low frequency acoustic energ

1986-01-10

1987-06-16

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367159, 367166, 367912, 181102, G01V 100

Patent

active

046740678

ABSTRACT:
An acoustic transmitter is employed in a borehole logging tool for generating low frequency acoustic energy waves. A tube of piezoelectric material is sealed at both ends and filled with liquid. A pliable boot surrounds such piezoelectric tube. At least one passageway communicates the inside of the piezoelectric tube with the inner surface of the boot. Differing electrical polarities are applied to the inner and outer surfaces of the piezoelectric tube. These electrical polarities are modulated to excite the piezoelectric tube to resonate at a frequency controlled by the inertia of the liquid in the passageway and the mass of the liquid inside the piezoelectric tube.

REFERENCES:
patent: Re24446 (1958-03-01), Summers
patent: 2868311 (1959-01-01), Tullos
patent: 3018466 (1962-01-01), Harris
patent: 3333238 (1967-07-01), Caldwell
patent: 3362011 (1968-01-01), Zemanek, Jr.
patent: 3768069 (1973-10-01), Abbagnaro
patent: 4383308 (1983-05-01), Caldwell
patent: 4450544 (1984-05-01), Denaro et al.
L. E. Kinsler and A. R. Frey, Fundamentals of Acoustics, John Wiley & Sons, Inc., Apr. 1958, pp. 198-207, 244-247.

Affiliated with

Also associated with

Rating

Method and apparatus for generating low frequency acoustic energ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for generating low frequency acoustic energ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for generating low frequency acoustic energ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-687825