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DOE OSTI · 1129209

Composite drill pipe and method for forming same

Leslie, James C·Leslie, II, James C·Heard, James·Truong, Liem·Josephson, Marvin
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Abstract

Metal inner and outer fittings configured, the inner fitting configured proximally with an external flange and projecting distally to form a cylindrical barrel and stepped down-in-diameter to form an abutment shoulder and then projecting further distally to form a radially inwardly angled and distally extending tapered inner sleeve. An outer sleeve defining a torque tube is configured with a cylindrical collar to fit over the barrel and is formed to be stepped up in diameter in alignment with the first abutment shoulder to then project distally forming a radially outwardly tapered and distally extending bonding surface to cooperate with the inner sleeve to cooperate with the inner sleeve in forming a annular diverging bonding cavity to receive the extremity of a composite pipe to abut against the abutment shoulders and to be bonded to the respective bonding surfaces by a bond.

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Leslie, James C, Leslie, II, James C, Heard, James, Truong, Liem, Josephson, Marvin. 2014-04-15. Composite drill pipe and method for forming same. https://www.osti.gov/biblio/1129209

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