英语词汇“drill collar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Word forms: (regular plural) drill collars

noun

(Extractive engineering: Field development, Equipment)

A drill collar is a thick tubular piece at the bottom of a drillpipe, which concentrates the weight on the rotating drill bit.

The drill collar is a heavy, tubular connector between drillpipe and a bit.

The drill collar is used to concentrate a heavy mass near the lower end of the drill column.

A drill collar is a thick tubular piece at the bottom of a drillpipe, which concentrates the weighton the rotating drill bit.

drill

单词	drill collar
释义	drill collar in the Oil and Gas Industry (drɪl kɒlər) Word forms: (regular plural) drill collars noun (Extractive engineering: Field development, Equipment) A drill collar is a thick tubular piece at the bottom of a drillpipe, which concentrates the weight on the rotating drill bit. The drill collar is a heavy, tubular connector between drillpipe and a bit. The drill collar is used to concentrate a heavy mass near the lower end of the drill column. A drill collar is a thick tubular piece at the bottom of a drillpipe, which concentrates the weighton the rotating drill bit. drill
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drill collar in the Oil and Gas Industry