Transmitter and receiver to radially scan the cementing conditio

Details Transmitter and receiver to radially scan the cementing conditio Transmitter and receiver to radially scan the cementing conditio

1993-08-05

1994-12-27

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367 86, 181105, 166253, G01V 100

Patent

active

053771605

ABSTRACT:
A sonic well logging tool radially measures circumferential cement conditions longitudinally along a well casing. Sonic signals are transmitted from a plurality of angularly displaced transmitter-transducers, through a borehole fluid, down a longitudinally extending sector of the well casing, and then through the borehole fluid to a plurality of angularly displaced receiver-transducers, which are distally disposed from the transmitter-transducers.

REFERENCES:
patent: 3369626 (1968-02-01), Zemanek, Jr.
patent: 4255798 (1981-03-01), Havira
patent: 4709357 (1987-11-01), Maki, Jr.
patent: 5089989 (1992-02-01), Schmidt et al.
Schlumberger Publication No. M-090247 dated Jan. 1991.
Article on Peripheral and Longitudinal Evaluation of Cement Bond.

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