Oilfield Glossary
Oilfield Glossary
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bucking current

1. n. [Formation Evaluation]
On a laterolog device, the current sent through a guard electrode (A1) with the purpose of focusing the current sent by the central current emitting electrode (A0). The bucking current maintains A1 and A0 at the same potential, thereby forcing the current from A0 to run approximately perpendicular to the sonde into the formation.