E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
189/24, 166/39
E21B 43/24 (2006.01) E21B 17/00 (2006.01) E21B 36/00 (2006.01) F16L 59/065 (2006.01)
Patent
CA 1203158
ABSTRACT OF THE DISCLOSURE 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 gettermaterial 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 tubularinto the annular space and gases such as nitrogen, carbon monoxide, and hydrogenthat are released from the inner tubular at elevated temperatures.
435576
Ayres Paul S.
Chen Chou-Ming
Ziels Burton D.
Babcock & Wilcox Company The
Ridout & Maybee Llp
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