Search International and National Patent Collections

1. (WO2016057445) STEERING ASSEMBLY FOR DIRECTIONAL DRILLING OF A WELLBORE

Pub. No.:    WO/2016/057445    International Application No.:    PCT/US2015/054119
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Wed Oct 07 01:59:59 CEST 2015
IPC: E21B 7/08
Applicants: TERCEL OILFIELD PRODUCTS USA LLC
Inventors: LASATER, Jeffrey B.
EARLES, Ronald G.
BYRD, Jayson
Title: STEERING ASSEMBLY FOR DIRECTIONAL DRILLING OF A WELLBORE
Abstract:
A steering assembly includes a housing having a longitudinal axis, a mandrel having a front connecting extremity and a rear connecting extremity, the mandrel passing through the housing and arranged in a first position coaxially to the longitudinal axis of the housing, a deflector device configured to exert a side force on the mandrel to offset the front connecting extremity of the mandrel from the longitudinal axis, and a tool face assembly configured to rotate the front connecting extremity of the mandrel in a desired direction.