ARRANGEMENT FOR CLEANING INTERNAL SURFACE OF CASING STRINGS

ARRANGEMENT FOR CLEANING INTERNAL SURFACE OF CASING STRINGS

An arrangement for cleaning the internal surface of casing strings, comprises a hollow cylindrical body with slots provided around the periphery thereof. The slots accommodate extendable cutting blades. The cutting blades are moved with the aid of walls of an elastic vessel. The elastic vessel is di...

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Hauptverfasser: MISHIN, VIKTOR I, LAPTEV, ANATOLY M, KISELMAN, MARK L, LEDYASHOV, OLEG A, GORYAINOV, STANISLAV P, PETROV, STANISLAV F
Format: Patent
Sprache:eng ; fre
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EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator MISHIN, VIKTOR I
LAPTEV, ANATOLY M
KISELMAN, MARK L
LEDYASHOV, OLEG A
GORYAINOV, STANISLAV P
PETROV, STANISLAV F
description An arrangement for cleaning the internal surface of casing strings, comprises a hollow cylindrical body with slots provided around the periphery thereof. The slots accommodate extendable cutting blades. The cutting blades are moved with the aid of walls of an elastic vessel. The elastic vessel is disposed inside the body and adapted to be communicated with a source of compressed fluid medium. The elastic vessel is disposed in a bushing installed coaxially with the body and provided with longitudinal ports. The ports are arranged opposite to the slots of the body and are equipped with flat spring elements. The flat spring elements substantially completely cover the ports of the bushing and cooperate by one side with the cutting blades and by the other side, with the elastic vessel.
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title ARRANGEMENT FOR CLEANING INTERNAL SURFACE OF CASING STRINGS
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