Technique for cementing well bore casing

Details Technique for cementing well bore casing Technique for cementing well bore casing

1975-03-19

1976-04-20

Murtagh, John E.

Wells

Above ground apparatus

With tube rotating means

166285, E21B 3303

Patent

active

039512088

ABSTRACT:
There is disclosed an apparatus capable of simultaneous or sequential rotation and reciprocation of a casing string during the process of cementing the same in a well bore. There is provided a device for launching sealing elements such as spheres, go-devils or cementing plugs into the casing string. This device is mounted on a stationary part of a swivel and does not rotate during rotation of the casing string.

REFERENCES:
patent: 2609881 (1952-09-01), Warren
patent: 2675082 (1954-04-01), Hall
patent: 3507325 (1970-04-01), Scott
patent: 3616850 (1971-11-01), Scott
patent: 3777819 (1973-12-01), Delano
patent: 3828852 (1974-08-01), Delano

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