Sealing system for a well bore in which a hot fluid is circulate

Details Sealing system for a well bore in which a hot fluid is circulate Sealing system for a well bore in which a hot fluid is circulate

1984-08-30

1985-04-30

Leppink, James A.

Wells

Above ground apparatus

Well caps or casing heads

166387, 166 88, 277 27, E21B 3303

Patent

active

045138168

ABSTRACT:
A sealing system for a tubing string in a well bore which is capable of undergoing deformation under the action of a hot fluid and has at least one casing string in which the tubing is housed, a connecting and sealing assembly placed between the casing and the tubing as well as members for supporting and securing the casing and tubing strings comprises in addition, a hollow seal support, the upper end of which is rigidly fixed and the lower end of which is free to permit displacement of the upper portion of the tubing string with respect to the seal support with the lower portion of the tubing string rigidly fixed to the connecting and sealing assembly located near the bottom of the well bore.

REFERENCES:
patent: 4258792 (1981-03-01), Restarick
patent: 4351531 (1982-09-01), Maasberg et al.
patent: 4352499 (1982-10-01), Foster
patent: 4381868 (1983-05-01), Croy et al.
patent: 4390063 (1983-06-01), Wells, Jr.

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