Patent ID: 9045957
Filing Date: 2015-06-02
Classification: E21B

Abstract:
1. A drilling system, comprising: a rotational component configured to be coupled with a top drive such that the top drive facilitates rotation of the rotational component about a vertical axis, wherein the rotational component comprises a housing configured to be coupled with the top drive, wherein the top drive facilitates rotation of the housing about the vertical axis; an oscillation component configured to be coupled with the rotational component and with tubular or equipment, wherein the oscillation component comprises a quill disposed at least partially in the housing and configured to be coupled with the tubular or equipment; a first engagement feature of the rotational component comprising a cam disposed on a shaft; and a second engagement feature of the oscillation component comprising an asymmetric lip surface extending from the quill, wherein the cam and the asymmetric lip surface are configured to abut one another and maintain contact such that during rotation of the rotational component the oscillation component is oscillated along the vertical axis.