ECCENTRIC REAMER

drilling operations. SUBSTANCE: given eccentric reamer is designed to form hole larger than diameter of casing string or of drilled shaft through which tools are sunk to face. Reamer has body, reaming members falling outside of dimensions of drill bit. Specific feature of proposed reamer lies in dis...

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Hauptverfasser:	JAKOVENKO A.A, DORODNOV I.P, IPPOLITOV V.V, SHAMANOV S.A, VJAKHIREV V.I
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	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	JAKOVENKO A.A DORODNOV I.P IPPOLITOV V.V SHAMANOV S.A VJAKHIREV V.I
description	drilling operations. SUBSTANCE: given eccentric reamer is designed to form hole larger than diameter of casing string or of drilled shaft through which tools are sunk to face. Reamer has body, reaming members falling outside of dimensions of drill bit. Specific feature of proposed reamer lies in displacement of axis of upper joining thread of body relative to its axis so that condition of equality of moments of loads emerging on drill bit and reamer with regard to axis of displacement of joining thread is fulfilled. EFFECT: prevention of deviation of drill bit from center and provision for drilling of hole of design diameter. 3 dwg
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SUBSTANCE: given eccentric reamer is designed to form hole larger than diameter of casing string or of drilled shaft through which tools are sunk to face. Reamer has body, reaming members falling outside of dimensions of drill bit. Specific feature of proposed reamer lies in displacement of axis of upper joining thread of body relative to its axis so that condition of equality of moments of loads emerging on drill bit and reamer with regard to axis of displacement of joining thread is fulfilled. 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SUBSTANCE: given eccentric reamer is designed to form hole larger than diameter of casing string or of drilled shaft through which tools are sunk to face. Reamer has body, reaming members falling outside of dimensions of drill bit. Specific feature of proposed reamer lies in displacement of axis of upper joining thread of body relative to its axis so that condition of equality of moments of loads emerging on drill bit and reamer with regard to axis of displacement of joining thread is fulfilled. EFFECT: prevention of deviation of drill bit from center and provision for drilling of hole of design diameter. 3 dwg</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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recordid	cdi_epo_espacenet_RU2152502C1
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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	ECCENTRIC REAMER
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