DRILLING SYSTEM, BIASING MECHANISM AND METHOD FOR DIRECTIONALLY DRILLING A BOREHOLE

Title:

DRILLING SYSTEM, BIASING MECHANISM AND METHOD FOR DIRECTIONALLY DRILLING A BOREHOLE

Document Type and Number:

WIPO Patent Application WO/2013/180822

Kind Code:

A3

Abstract:

A drilling system for directional drilling of a borehole includes a biasing mechanism (160) having a pivot (170) associated with a lower bearing assembly (125), an offset mechanism (200) associated with an upper radial bearing assembly (135), and a toolface controller (250), whereby the angular relationship of a drill bit and its toolface angle may be actively managed.

Inventors:

SCHAAF STUART (US)
WERNIG MARCUS D (US)

Application Number:

PCT/US2013/032406

Publication Date:

June 26, 2014

Filing Date:

March 15, 2013

Export Citation:

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Assignee:

SCHAAF STUART (US)
WERNIG MARCUS D (US)
TELLUS OILFIELD INC (US)

International Classes:

E21B7/06; E21B44/00

Domestic Patent References:

WO2007134748A1

2007-11-29

Foreign References:

US6216802B1	2001-04-17
US5050692A	1991-09-24
EP0109699B1	1986-11-12
US7311157B1	2007-12-25

Attorney, Agent or Firm:

TOBOR, Ben, D. (LLP1000 Louisiana Street, Suite 170, Houston TX, US)

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