DEFLECTION UNIT FOR DIRECTED DRILLING

This invention relates to the branch of directed drilling of inclined-directed wells, in particular to trajectory control without lifting the drill string. Deflection unit for directed drilling has pre-fabricated body with the upper and the lower nipples. The body has deflection bushing, pack of spr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAVORSKYI MYKHAILO MYKOLAIOVYCH, KOZMIN DMYTRO IVANOVYCH, IVASIV VASYL MYKHAILOVYCH, VASYLIV MYKOLA VASYLIOVYCH, OLEKSIUK MYKOLA PETROVYCH, KRYZHANIVSKYI YEVSTAKHII IVANOVYCH, LIHOTSKYI MYKOLA VOLODYMYROVYCH
Format:	Patent
Sprache:	eng
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:	This invention relates to the branch of directed drilling of inclined-directed wells, in particular to trajectory control without lifting the drill string. Deflection unit for directed drilling has pre-fabricated body with the upper and the lower nipples. The body has deflection bushing, pack of springy shells, ring and combined stem. To the stem stopper and support bushing with collar are attached, this one interacts with the inner surface of the ring. The pack of springy shells is placed between the ring of the stem and the support bushing. The collar of the middle part of the stem is installed in deflection bushing. This invention promotes increase of the range of the angles of deflection of the drill instrument.