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CLEANER OF PIPES BEING PULLED OUT OF WELL
CLEANER OF PIPES BEING PULLED OUT OF WELL
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机译:管道清洁剂喷涌而出
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摘要
FIELD: cleaning of drill pipe string. SUBSTANCE: body shell is provided with ports for accommodation of cleaning assembly which consists of two halves rigidly interconnected by plates and bolts. Each half comprises two half-rings of angle profile, bolted together and having interposed flexible members. EFFECT: improved design. 3 dwg
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