CLEANER OF PIPES BEING PULLED OUT OF WELL Russian patent published in 1994 - IPC

Abstract RU 2023869 C1

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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RU 2 023 869 C1

Authors

Marziev M.-S.I.

Dates

1994-11-30—Published

1991-12-16—Filed