Angela D High

US Patent:

20100252331, Oct 7, 2010

Filed:

Apr 1, 2009

Appl. No.:

12/416804

Inventors:

Angela D. High - Tyler TX, US
Christopher C. Beuershausen - Magnolia TX, US
Adam Richard Williams - Conroe TX, US

International Classification:

E21B 19/18
E21B 7/20
E21B 17/14

US Classification:

175320, 166380, 175402

Abstract:

Methods of attaching a crown of a boring shoe to a casing section include attaching an adaptable shank to a crown, and machining the adaptable shank to configure an end thereof for attachment to a casing section after attaching the adaptable shank to the crown. Additional methods include welding an end of an adaptable shank to a crown to form a boring shoe, selecting the adaptable shank to have an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown, and configuring an opposite end of the adaptable shank for attachment to a particular type of casing section after welding the shank to the crown. Boring shoes have an adaptable shank attached to a crown, wherein the shank comprises a generally cylindrical wall having an average wall thickness greater than about five percent (5%) of a maximum diameter of the crown.