DRILL HEAD Russian patent published in 1997 - IPC

Abstract RU 2077652 C1

FIELD: well drilling. SUBSTANCE: drill head is assembled of a set of blades different in functional application. The first function is coarse annular well drilling out of the well bottom. The second function is well wall calibration, core roll calibration and cutting the core so as to apply minimum axial load, keep diameter of the well and core. As this takes place, tubular cutters with holes open to drill string-borehole annulus. EFFECT: higher efficiency. 6 cl, 4 dwg

Similar patents RU2077652C1

Title	Year	Author	Number
DRILL BIT	1992	Shul'Gin Aleksandr Pavlovich	RU2077651C1
DRILLING BIT	1992	Shul'Gin Aleksandr Pavlovich	RU2065917C1
UNIVERSAL CORE DRILL AND CORE DRILL BIT	1991	Akopov Ehduard Arshakovich Akopov Leonid Ehduardovich	RU2021473C1
DRILLING BIT	0	Shulgin Aleksandr Pavlovich	SU1507947A1
DRILL BIT	2021	Chikhotkin Aleksej Viktorovich Tretyak Aleksandr Yakovlevich Chikhotkin Viktor Fedorovich Tretyak Aleksandr Aleksandrovich Borisov Konstantin Andreevich	RU2769009C1
PDC DRILL BIT WITH LOCKING COLLET	2021	Bogomolov Rodion Mikhajlovich	RU2766075C1
CORE-DRILL BIT	1993	Alekseev L.A. Taushev R.Z. Akchurin Kh.I. Ishbaev G.G. Karabalin U.S. Kotel'Nikov I.E. Matjushin P.N. Khairov G.B.	RU2057888C1
DRILL BIT	0	Parkhomenko Viktor Fedorovich Porada Anatolij Stepanovich	SU945348A1
PDC DRILL BIT WITH DAMPER AND EXPANDABLE SPRING STOPPER FOR ROTATING CUTTERS	2022	Bogomolov Rodion Mikhajlovich	RU2787667C1
CORE-TAKING DEVICE	0	Litvishko Vladimir Grigorevich Litvinov Nikolaj Pavlovich Zyubin Viktor Iosifovich	SU1273500A1

RU 2 077 652 C1

Authors

Shul'Gin Aleksandr Pavlovich

Dates

1997-04-20—Published

1992-12-11—Filed