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Title: Composite drill pipe and method for forming same

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.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
1129209
Report Number(s):
8,696,034
13/551,446
DOE Contract Number:
FC26-99FT40262
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Jul 17
Research Org:
Advanced Composite Products & Technology, Inc., Huntington Beach, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING