Downhole steering tool having a non-rotating bendable section

Details Downhole steering tool having a non-rotating bendable section Downhole steering tool having a non-rotating bendable section

2008-06-10

2008-06-10

Wright, Giovanna C (Department: 3672)

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

C175S061000, C175S076000

Reexamination Certificate

active

07383897

ABSTRACT:
A downhole steering tool is disclosed. The steering tool includes a rotatable shaft, a substantially non-rotating tool body deployed about the shaft, and a plurality of force application members deployed on the steering tool body. The steering tool further includes a bendable section deployed in the steering tool body. The bendable section is disposed to bend preferentially relative to the steering tool body under an applied bending load. The use of a steering tool body having a bendable section tends to advantageously reduce bending stresses in the steering tool body during use. Moreover, tools embodying this invention may be suitable for higher dogleg severity applications.

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