Insert for insulated steam injection tubing

Details Insert for insulated steam injection tubing Insert for insulated steam injection tubing

1984-05-07

1986-11-11

Scanlan, Jr., Richard J.

Pipe joints or couplings

With heating or cooling

285 48, 285 50, 285371, 285398, 166242, F16L 5500

Patent

active

046218386

ABSTRACT:
An insert for insulating the area of the coupling two doublewalled tubing segments of an insulated steam injection tubing string. The insert is mounted to overlie both of a pair of adjacent tubing segment end portions radially inwardly thereof. In accordance with one aspect of the invention, the insert has two walls which are spaced apart and connected at their ends to define an annular space therebetween in which thermal insulation may be provided. In accordance with another aspect of the invention, the insert is engaged to one of the end portions and is spaced from the other of the end portions to prevent flowthrough of vapor and to allow vapor to enter between the insert and coupling and condense to provide an insulating medium.

REFERENCES:
patent: 2118428 (1938-05-01), Chrisman
patent: 3680631 (1972-08-01), Allen et al.
patent: 4518175 (1985-05-01), Richards et al.
patent: 4538834 (1985-09-01), Brady et al.

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