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Title: Composite drill pipe

Patent ·
OSTI ID:985726

A composite pipe segment is formed to include tapered in wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self centering receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces. The distal peripheries of the nested end pieces are then welded to each other and the sandwiched and bonded portions are radially pinned. The composite segment may include imbedded conductive leads and the axial end portions of the end pieces are shaped to form a threaded joint with the next pipe assembly that includes a contact ring in one pipe assembly pierced by a pointed contact in the other to connect the corresponding leads across the joint.

Research Organization:
Advanced Composite Products & Technology, Inc. (Huntington Beach, CA)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-99FT40262
Assignee:
Advanced Composite Products & Technology, Inc. (Huntington Beach, CA)
Patent Number(s):
7,458,617
Application Number:
10/952,135
OSTI ID:
985726
Country of Publication:
United States
Language:
English

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