TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

BUMPER JAR [1 record]

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Filter results by subject field

Alphabetical list of terms

Record 1 2001-03-15

English

Subject field(s)
  • Oil Drilling
DEF

A device made up in the drill string that, when actuated, delivers a heavy downward blow to the string.

CONT

A bumper jar has a hollow body that moves upward when the drill string is picked up. When the string is dropped quickly, the jar body produces a sharp downward blow on the tubing or pipe made up below the jar. If downward blows can free a fish, a bumper jar can be very effective.

French

Domaine(s)
  • Forage des puits de pétrole

Spanish

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TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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