Insulating tubular conduit
Patent
·
OSTI ID:6359319
A concentric insulating tubular conduit member for use in forming a conduit string such as a tubing string in a subterranean oil or gas well, is disclosed. Each individual conduit comprises concentric inner and outer members rigidly attached at each end. Both the inner and outer tubular members are welded to an intermediate bushing. At least one of the inner and outer members is upset to prevent weakening of the tubular joint at the welded connection. Adjacent tubular conduits can be interconnected by couplings having an outer surface flush with the outer periphery of the two interconnected joints.
- Assignee:
- Baker Oil Tools, Inc.
- Patent Number(s):
- US 4526408
- OSTI ID:
- 6359319
- Country of Publication:
- United States
- Language:
- English
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