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Directional well bore control by buckling of outer and inner drill string parts

IP.com Disclosure Number: IPCOM000199500D
Publication Date: 2010-Sep-07
Document File: 1 page(s) / 7K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure shows the possibility to tilt a drilling bit by defined buckling of the drill string or parts of a tool. There are two principles; in the first a part of the drill string is buckled, the second depends on buckling an internal drive shaft of a tool. For buckling the string, angle controlled WOB pulses are required. The internal drive shaft can either been buckled by a pulsing force or buckled constant and positioned with a guidance sleeve. All principles lead to a constant or periodical tilting of the bit and so to directional control of the drilled well path is possible.

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Title of Invention:

Directional well bore control by buckling of outer and inner drill string parts

Abstract of the Invention:

This disclosure shows the possibility to tilt a drilling bit by defined buckling of the drill string or parts of a tool. There are two principles; in the first a part of the drill string is buckled, the second depends on buckling an internal drive shaft of a tool. For buckling the string, angle controlled WOB pulses are required. The internal drive shaft can either been buckled by a pulsing force or buckled constant and positioned with a guidance sleeve. All principles lead to a constant or periodical tilting of the bit and so to directional control of the drilled well path is possible.