<p>A down-the-hole vibratory unit for a drilling system includes a casing comprising a fluid inlet, and a plurality of eccentrically weighted rotor assemblies positioned at least partially within the casing and in fluid communication with the inlet, the eccentrically weighted rotor assemblies that are unbalanced relative to a central axis and are configured to rotate in response to a fluid flow directed thereto to apply centrifugal forces to the casing.</p>
申请公布号
WO2009088769(A2)
申请公布日期
2009.07.16
申请号
WO2008US88147
申请日期
2008.12.23
申请人
LONGYEAR TM, INC.;IBRAHIM, GEORGE;DRENTH, CHRISTOPHER, L.;LACHANCE, ANTHONY
发明人
IBRAHIM, GEORGE;DRENTH, CHRISTOPHER, L.;LACHANCE, ANTHONY