Vacuum insulated stem injection tubing

Details Vacuum insulated stem injection tubing Vacuum insulated stem injection tubing

1982-08-31

1985-04-23

Look, Edward K.

Pumps

Electrical or getter type

Getter heating, vaporizing, or regeneration

166 57, 417 53, F04B 3702

Patent

active

045127212

ABSTRACT:
Tubular apparatus for delivering steam or other hot fluids to an oil well comprises an inner tubular having an outer surface and defining an inner space for conveying fluids at a temperature greater than 400 degrees F., and an outer tubular disposed around the inner tubular and defining an annular space with the inner and the outer tubulars being connected together. The annular space is closed to atmospheric pressure. A vacuum is established within the annular space. A getter material for absorbing at least one active gas is disposed within the annular space. Active gases which are absorbed by the getter material include hydrogen formed by corrosion of the outer tubular which hydrogen migrates through the outer tubular into the annular space and gases such as nitrogen, carbon monoxide, and hydrogen that are released from the inner tubular at elevated temperatures.

REFERENCES:
patent: 3680631 (1972-08-01), Allen et al.
patent: 3720267 (1973-03-01), Allen et al.
patent: 3763935 (1973-10-01), Perkins
patent: 3994340 (1976-11-01), Anderson et al.
patent: 4146497 (1979-03-01), Barosi et al.

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