Title:
ENHANCED VIBRATIONAL OR HAMMERING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/149363
Kind Code:
A4
Abstract:
Vibrational apparatus to direct stress waves (eg. to a bit 2 or other downhole tool) by generating vibrations as a consequence of shuttling responsive to relative rotational movement between magnetic arrays (4,5) and wherein there is, or can be, a use of a system (6,7) (whether rebound, recoil, spring, pneumatic, magnetic or not) able at least in part to return acquired potential energy in addition to any acquired at the same time by the interacting magnetic arrays. A free travel distance can be provided for one of said components prior to the onset of any substantial collection of energy from the movement (relative) of that component in a direction (eg, uphole) for use in return travel (eg, downhole) preferably synchronized, or synchronizable, to enhance the return travel causing forces of any repulsive and/or attractive forces generated otherwise than by the said magnetic arrays.
Inventors:
GREENWOOD ROLAND (AU)
POWELL PETER EVAN (NZ)
POWELL PETER EVAN (NZ)
Application Number:
PCT/NZ2011/000084
Publication Date:
January 19, 2012
Filing Date:
May 24, 2011
Export Citation:
Assignee:
GREENWOOD ROLAND (AU)
POWELL PETER EVAN (NZ)
FLEXIDRILL LTD (NZ)
POWELL PETER EVAN (NZ)
FLEXIDRILL LTD (NZ)
International Classes:
E21B7/24; E21B1/22; E21B4/16; E21B6/08
Attorney, Agent or Firm:
ADAMS, Matthew, D et al. (Level 22State Insurance Tower,1 Willis Stree, Wellington 6011, NZ)
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