Casing collar indicator

Details Casing collar indicator Casing collar indicator

1976-07-23

1978-01-10

Novosad, Stephen J.

Wells

With time or distance measuring, temperature responsive or...

166255, 166241, E21B 4700

Patent

active

040673863

ABSTRACT:
A tubing string device for giving an indication of the location of casing collars in a cased wellbore utilizes a tubular body having a resilient sleeve mounted thereon, and axial spring means abutting the resilient sleeve.

REFERENCES:
patent: 1898074 (1933-02-01), Bailey
patent: 2656890 (1953-10-01), Brandon
patent: 2944608 (1960-07-01), Rush
patent: 3055432 (1962-09-01), Park
patent: 3061010 (1962-10-01), Conrad et al.
patent: 3312285 (1967-04-01), Solum
patent: 3578084 (1971-05-01), Bombardieri et al.
patent: 3978924 (1976-09-01), Roesner

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