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(19)

(11)

1 840 745

(13)

(51)

IPC

G01P3/42(2006-01-01)

(21) (22)

Application

1570921/28, 1973-10-01

(22)

Actual filing date

1973-10-01

(45)

Published

2009-02-20

(72)

Inventor

Karatetskij Sergej SergeevichPigin Vladimir SergeevichGorbunov Nikolaj LeonidovichSal'Nikov Jurij Vasil'Evich

ACOUSTIC LOG Russian patent published in 2009 - IPC G01P3/42

Abstract SU 1840745 A1

FIELD: physics, acoustics.

SUBSTANCE: acoustic log comprises transmitting and receiving antennas, generator device, receiving-amplifying device and device for information processing. Acoustic log is equipped with phase changer connected to generator device inlet, and attenuator connected between phase changer outlet and inlet of receiving-amplifying device.

EFFECT: higher noise immunity and accuracy of vessel velocity measurement by compensation of feedthrough signal.

1 dwg

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SU 1 840 745 A1

Authors

Karatetskij Sergej Sergeevich

Pigin Vladimir Sergeevich

Gorbunov Nikolaj Leonidovich

Sal'Nikov Jurij Vasil'Evich

Dates

2009-02-20—Published

1973-10-01—Filed