Concentric insulated tubing string

Details Concentric insulated tubing string Concentric insulated tubing string

1982-09-30

1984-07-17

Moon, Charlie T.

Metal working

Method of mechanical manufacture

During simulated operation or operating conditions

29446, 29451, 2853323, B23Q 1700, B23P 1102

Patent

active

044597312

ABSTRACT:
An improved insulated tubing string with insulated coupling formed of concentric tubing members insulated from each other to prevent heat from the inner tubing from being conducted to and through the outer tubing. The coupling joins the outer tubing of successive tubing assemblies to provide additional strength to the string and the inner tubing is insulated within the coupling to prevent heat loss at the coupling. The inner tubing is elongated during fabrication and joined to the outer tubing when elongated to reduce heat stress on the string when in use.

REFERENCES:
patent: 2150221 (1939-03-01), Hinderliter
patent: 2812958 (1957-11-01), Rogers
patent: 2924245 (1960-02-01), Wilson
patent: 2980451 (1961-04-01), Taylor et al.
patent: 3511282 (1970-05-01), Willhite et al.
patent: 3574357 (1971-04-01), Alexandru
patent: 3794358 (1974-02-01), Allen et al.
patent: 3850714 (1974-11-01), Adorjan
patent: 4054158 (1977-10-01), Hoeman et al.
patent: 4332401 (1982-06-01), Stephenson et al.
patent: 4340245 (1982-07-01), Stalder

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