REAMER

FIELD: bore-hole drilling technology. SUBSTANCE: this relates to drilling deep bore-holes and particularly reamer is used for increasing annular clearance between casing string and wall of bore-hole. Reamer has body with thread, rock-crushing member, washing passage. Rock-crushing member is of torus...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JAKOVENKO A.A, DORODNOV I.P, SHAMANOV S.A
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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Beschreibung
Zusammenfassung:	FIELD: bore-hole drilling technology. SUBSTANCE: this relates to drilling deep bore-holes and particularly reamer is used for increasing annular clearance between casing string and wall of bore-hole. Reamer has body with thread, rock-crushing member, washing passage. Rock-crushing member is of torus configuration according to diameter of drill bit with lower bevelled face, and slot. It is located on body with displacement of its axis. Teeth are arranged on rock-crushing member on diametrically opposite surfaces. In addition, body is provided with head-pieces which are made at angle to longitudinal passage of body. Washing passage is made along longitudinal axis of body. Aforesaid embodiment of reamer ensures highly efficient operation. EFFECT: higher efficiency. 4 dwg