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单词 anchor washpipe spear
释义 anchor washpipe spear
[`aŋ·kǝr `wäsh´pīp ´spir]
PETROLEUM ENGINEERING
A special type of fishing tool; attached to the washover pipe with slips and released from the pipe upon engagement of the fish by the tool, it allows the washover and retrieval of the fish to be accomplished in one return trip.
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