FREMGANGSMAADE OG APPARAT TIL FREMSTILLING AF EN ROTOR TIL EN BOREHULSSKRUEMOTOR

PCT No. PCT/SU86/00008 Sec. 371 Date Sep. 1, 1987 Sec. 102(e) Date Sep. 1, 1987 PCT Filed Jan. 31, 1986 PCT Pub. No. WO87/04753 PCT Pub. Date Aug. 13, 1987.A rotor (1) of a screw hydraulic downhole motor, made as a hollow multiple-start screw featuring a substantially constant wall thickness. The ra...

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Bibliographische Detailangaben

Hauptverfasser:	GOLDOBIN, VLADIMIR BORISOVICH, NIKOMAROV, SAMUIL SOLOMONOVICH, KOCHNEV, ANATOLY MIKHAILOVICH, VSHIVKOV, ANDREI NIKOLAEVICH
Format:	Patent
Sprache:	dan
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINE PLANTS IN GENERAL FIXED CONSTRUCTIONS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES STEAM ENGINES WEAPONS
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