Search International and National Patent Collections

1. (WO2016060683) ROTARY STEERABLE SYSTEM

Pub. No.:    WO/2016/060683    International Application No.:    PCT/US2014/061118
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Sat Oct 18 01:59:59 CEST 2014
IPC: E21B 7/04
E21B 7/08
E21B 47/02
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: BRYSON, Alan, Campbell
Title: ROTARY STEERABLE SYSTEM
Abstract:
An example apparatus for controlling the direction of drilling a borehole includes a housing and a radially offsetable drive shaft at least partially within the housing. The apparatus may further include one or more pusher extendable from the housing. The one or more pusher may be extendable in response to a radial offset in the offsetable drive shaft with respect to a longitudinal axis of the housing.