TERMIUM Plus®

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BLOCK LINE [1 record]

Record 1 1999-11-03

English

Subject field(s)
  • Chains and Cables (Mechanical Components)
  • Oil Drilling
DEF

A wire rope used to support the drill tools.

CONT

The rig includes a square open tower or derrick ... At the top of the derrick there is a crown block containing pulley wheels over which are run three steel cables: the casing line ..., the sand line ..., and the drilling line for raising and lowering the drilling tools.

CONT

The drilling line is raised and dropped by a walking-beam mechanism driven by a steam, gasoline, or diesel engine.

CONT

The cable drilling bit is made of a heavy bar of steel or iron 4 to 11 feet ... long, shaped to a blunt edge on one end. The other end has a tapered tool joint for attachment to the drilling cable.

CONT

The percussion bit is alternately lifted and dropped while suspended at the end of the drilling cable.

French

Domaine(s)
  • Câbles et chaînes (Composants mécaniques)
  • Forage des puits de pétrole

Spanish

Save record 1

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