Method for initializing receiver channels in a cement bond...

Details Method for initializing receiver channels in a cement bond... Method for initializing receiver channels in a cement bond...

2011-03-22

2011-03-22

Lobo, Ian J (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

C367S035000, C181S102000, C702S006000

Reexamination Certificate

active

07911876

ABSTRACT:
A method for initializing the input of each of m receiver channels of a receiving transducer in a well logging tool comprising the steps of selecting a logging tool having a multi-element receiving transducer wherein each element of the multi-element receiving transducer operates in an anti-resonant mode below its resonant frequency, and executing a routine in an initialization mode wherein a predetermined number of run cycles are operated and receiver input responses are measured and averaged for each of the m channels while transmitter firing signals are disabled.

REFERENCES:
patent: 3309653 (1967-03-01), Martin et al.
patent: 4888740 (1989-12-01), Brie et al.
patent: 4928269 (1990-05-01), Kimball et al.
patent: 5377160 (1994-12-01), Tello et al.
patent: 5907131 (1999-05-01), Tello
patent: 6366531 (2002-04-01), Varsamis et al.

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