Title:
DEVICE FOR DRILLING WELLS AND ENLARGING EXISTING HOLES
Document Type and Number:
WIPO Patent Application WO/2004/097156
Kind Code:
A2
Abstract:
The invention relates to devices for drilling wells and enlarging existing holes and can be used for building, for example for lying underground services. The inventive device comprises a drive connected to a working member by a secondary shaft. Said working member consists of conical and cylindrical rollers which are in series deployed and eccentrically arranged with respect to the axis of rotation thereof. The working member is embodied in the form of easily detachable modules which are in series arranged on the axis of rotation, i.e. a backdrive module, well former, straight drive module and a head. The well former is embodied in the form of cylindrical rollers having different diameters or conical rollers. The rollers of the modules are arranged in the order of decrease of the diameters thereof in a direction to the ends of the working element. The inventive device is reliable, easy-to-use, and improves well drilling performance.
Inventors:
RJASHENTSEV A N (RU)
Application Number:
PCT/RU2004/000178
Publication Date:
November 11, 2004
Filing Date:
April 22, 2004
Export Citation:
Assignee:
Golovlev, Andrey Vladimirovich (59-181 Novosibirsk, 8, RU)
Kovalev, Vyacheslav Vasilyevich (6-48 Novosibirsk, 8, RU)
Skosogorenko, Gennady Borisovich (115-78 Novosibirsk, 6, RU)
Ryashentsev, Alexandr Nikolaevich (9-199 Novosibirsk, 8, RU)
Kovalev, Vyacheslav Vasilyevich (6-48 Novosibirsk, 8, RU)
Skosogorenko, Gennady Borisovich (115-78 Novosibirsk, 6, RU)
Ryashentsev, Alexandr Nikolaevich (9-199 Novosibirsk, 8, RU)
International Classes:
E02F5/18; E21B7/26; E21B7/30
Attorney, Agent or Firm:
Ryashentsev, Alexandr Nikolaevich (9-199 Novosibirsk, 8, RU)
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