Technique for running casing

Details Technique for running casing Technique for running casing

1976-08-30

1978-07-18

Leppink, James A.

Wells

Valves, closures or changeable restrictors

81 72, 175171, 294 8615, E21B 2300, E21B 302

Patent

active

041009681

ABSTRACT:
There is disclosed a technique for running casing in a well in which the casing joint about to be connected to similar joints suspended in the hole is releasably grasped on the inside of the joint. The casing joint is elevated through the releasable connection made inside the casing joint and is positioned to engage the joint suspended in the hole. The two joints are placed in engagement and the elevated joint rotated to make up the threaded connection. Fluid may be pumped into the casing string to maintain pressure control after making up the joint, while lowering the casing string in the hole or before the releasable connection is broken.

REFERENCES:
patent: 1790761 (1931-02-01), Ortolon
patent: 1917135 (1933-07-01), Littell
patent: 2190442 (1940-02-01), Costello
patent: 2633333 (1953-03-01), Storm
patent: 2956782 (1960-10-01), Mistrot
patent: 2984302 (1961-05-01), Church
patent: 3149676 (1964-09-01), Ensminger
patent: 3303730 (1967-02-01), Ellis
patent: 3322006 (1967-05-01), Brown
patent: 3380528 (1968-04-01), Timmons
patent: 3570598 (1969-05-01), Johnson
patent: 3664439 (1972-05-01), Council

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