Method for tensioning casing in thermal wells

Details Method for tensioning casing in thermal wells Method for tensioning casing in thermal wells

1978-02-22

1979-05-22

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166187, 166242, E21B 33127, E21B 3314

Patent

active

041554043

ABSTRACT:
A simplified method for tensioning casing in thermal wells involving the use of an inflatable packer element. The packer element is positioned at or near the bottom of a casing string and is inflated with cement after the cement annulus has been filled with cement. The packer is used to anchor the bottom of the casing while tension is applied to the top of the casing during the setting of the cement. After the cement has set the packer is a permanently imbedded in the casing cement.

REFERENCES:
patent: 2207345 (1940-07-01), Hammer
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patent: 3777819 (1973-12-01), Delano
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patent: 3976139 (1976-08-01), Wilder
Uren, L. C., Petroleum Production Engineering, Oil Field Development, McGraw-Hill Pub. Co., N. Y., N. Y., 1956, pp. 511-519.

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