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2 365 947

(13)

(51)

IPC

G01V3/28(2006-01-01)

(21) (22)

Application

2006106169/28, 2006-02-27

(24)

Start date

2006-02-27

(22)

Actual filing date

2006-02-27

(45)

Published

2009-08-27

(72)

Inventor

Davydychev Andrej I.Khanka Dzhon F.Barber Tomas D.Chesser Skott S.Finchi BulentSun' TszintszinVandermeer Vill'Jam B.Uord Richard D.

(73)

Holder

Shljumberger Teknolodzhi Bv

EXTRA COMPENSATING COILS AS ALTERNATIVE MEANS OF BALANCING INDUCTIVE GROUPS Russian patent published in 2009 - IPC G01V3/28

Abstract RU 2365947 C2

FIELD: electrical engineering.

SUBSTANCE: invention relates to electromagnetic well logging. The device has a holder and at least one group of four coils on the holder. At least one group of the four coils contains: an emitter (412), compensating coil (411), receiver (413) and adjusting coil (414). The emitter, compensating coil and receiver form a predefined group which is inherently balanced, and the adjusting coil is adjusted for fine tuning the group.

EFFECT: improved balancing of the group, increased tolerance to changes in ambient factors.

8 cl, 8 dwg

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RU 2 365 947 C2

Authors

Davydychev Andrej I.

Khanka Dzhon F.

Barber Tomas D.

Chesser Skott S.

Finchi Bulent

Sun' Tszintszin

Vandermeer Vill'Jam B.

Uord Richard D.

Dates

2009-08-27—Published

2006-02-27—Filed