Title:
CAVITATING JET
Document Type and Number:
WIPO Patent Application WO/2001/065049
Kind Code:
A2
Abstract:
The invention relates to hydromechanics and can be used for deep borehole drilling for cavitation erosion of a bottomhole, for dispergating solid particles in a fluid and for mixing nonsoluble fluid and for scraping out a pipe. The inventive cavitating jet comprises a body provided with a profiled flow channel and a barrier obstructing a flow. The barrier can move in a radial direction. The jet cavity is divided by a baffle into two chambers and the movable barrier at the extreme position thereof closes the flow section of one chamber. The barrier can be embodied in the form of a ball or cylinder having one or several degrees of freedom for radial displacement and closes at least 80 % of the total section of the jet channel.
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Inventors:
IVANNIKOV VLADIMIR IVANOVICH (RU)
IVANNIKOV IVAN VLADIMIROVICH (RU)
IVANNIKOV IVAN VLADIMIROVICH (RU)
Application Number:
PCT/RU2001/000081
Publication Date:
September 07, 2001
Filing Date:
February 26, 2001
Export Citation:
Assignee:
IVANNIKOV VLADIMIR IVANOVICH (RU)
IVANNIKOV IVAN VLADIMIROVICH (RU)
IVANNIKOV IVAN VLADIMIROVICH (RU)
International Classes:
B01F25/46; B08B9/04; E21B7/18; E21B7/24; E21B10/18; E21B21/10; E21B34/06; E21B43/114; E21B43/26; E21C45/00; (IPC1-7): E21B/
Foreign References:
| US4378853A | 1983-04-05 | |||
| SU1218117A1 | 1986-03-15 | |||
| SU1148957A1 | 1985-04-07 | |||
| US4114705A | 1978-09-19 |
Attorney, Agent or Firm:
Poroikov, Alexandr Jurievich (28/21-2-16 Moscow, 5, RU)
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