UP DRILL APPARATUS AND METHOD

WIPO Patent Application WO/2016/060852

A3

An apparatus including a rotating segment having a first radial surface, a non-rotating segment having a second radial surface, a housing disposed around the first and second radial surfaces, and one or more rolling elements disposed between and in contact with the first and second radial surfaces for transferring the non-rotating segment in an axial direction upon rotation of the rotating segment. The non-rotating element may be a second rotating element that rotates at a different rotational rate than the rotating element. Each rolling element moves 360 degrees along a circular path relative to the first radial surface and the second radial surface. The first or second radial surface has a tapered section. A downhole apparatus includes a power mandrel having a first end connected to a power section member and a second end having a rotating cam surface; a rotating element engaging the rotating cam surface; an anvil sub attached to a workstring, with the anvil sub having a stationary cam surface configured to engage with the rotating cam surface. Rotation of the rotating cam surface moves the anvil sub and the workstring axially within the wellbore.

VON GYNZ-REKOWSKI GUNTHER HH (US)
WILLIAMS MICHAEL V (US)
KOENING RUSSELL (US)
CHALLA CHAITANYA P (US)
VIGNAL FRANK R (US)

PCT/US2015/053418

August 18, 2016

October 01, 2015

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ASHMIN LC (US)

F16H25/12; E21B4/10

EP0432786A1	1991-06-19
US4718291A	1988-01-12
US3443446A	1969-05-13
US5028217A	1991-07-02
US2401794A	1946-06-11
US4509379A	1985-04-09
CA2664556A1	2008-04-10

WADDELL, Robert, L. et al. (600 Jefferson Street Suite 160, Lafayette LA, US)

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