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.
- Research Organization:
- Advanced Composite Products & Technology, Inc., Huntington Beach, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-99FT40262
- Assignee:
- Advanced Composite Products & Technology, Inc. (Huntington Beach, CA)
- Patent Number(s):
- 8,696,034
- Application Number:
- 13/551,446
- OSTI ID:
- 1129209
- Resource Relation:
- Patent File Date: 2012 Jul 17
- Country of Publication:
- United States
- Language:
- English
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