Title:
WELL DRILLING DEVICE
Document Type and Number:
WIPO Patent Application WO/2002/042598
Kind Code:
A1
Abstract:
The invention relates to drilling equipment. The inventive well drilling device comprises a core barrel provided with an adapter, a spindle rod which is arranged inside the core barrel and provided with a drill and a bearing disk. The spindle rod is embodied in the form of a hollow shaft provided with a graded slot in the wall thereof and rigidly connected to the core barrel. A central shaft is telescopically mounted inside the hollow shaft in such a way that it can rotate about the hollow shaft. The central shaft is provided with a radial boss which is embodied in the upper part thereof and accommodated in the orifice of the slot. The drill and a starting bit are fixed to a lower end of the central shaft protruding from the core barrel. The starting bit is embodied in the form of a sector-shaped disk provided with teeth for picking soil. A sector-shaped plate is mounted on the axis of the central shaft. Said plate is rigidly connected to the bearing disk and arranged in such a way that it is rotatable about the central shaft, and prevented from rotating about the hollow shaft and being longitudinally displaced along the central shaft. Said invention makes it possible to drill various soils using one tool and to pull out the soil in an easy manner.
Inventors:
BALAN ROMAN PAILAKOVICH (RU)
TIMOFEEV VLADIMIR ALEXANDROVIC (RU)
TIMOFEEV VLADIMIR ALEXANDROVIC (RU)
Application Number:
PCT/RU2001/000347
Publication Date:
May 30, 2002
Filing Date:
August 23, 2001
Export Citation:
Assignee:
BALAN ROMAN PAILAKOVICH (RU)
TIMOFEEV VLADIMIR ALEXANDROVIC (RU)
TIMOFEEV VLADIMIR ALEXANDROVIC (RU)
International Classes:
E21B11/00; E21B25/00; (IPC1-7): E21B11/00; E21B25/00
Foreign References:
| SU278599A | ||||
| SU1375789A1 | 1988-02-23 | |||
| SU1411430A1 | 1988-07-23 | |||
| GB1427779A | 1976-03-10 | |||
| US3444938A | 1969-05-20 |
Other References:
TIMOFEEV V.A.: "Ofitsialny bjulleten rossyskogo agentstva po potentam i tovarnym znakam", IZOBRETENYA (ZAYAFKI I PATENTY), no. 6, PART 1, 27 February 1999 (1999-02-27), MOSCOW, FIPS
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