Method of placing magnetic markers on collarless cased wellbores

Details Method of placing magnetic markers on collarless cased wellbores Method of placing magnetic markers on collarless cased wellbores

1984-08-31

1986-02-25

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166 664, 166255, E21B 4709

Patent

active

045722935

ABSTRACT:
To locate wireline tools in wellbores using collarless or butt joint casing, a magnetic marker is applied at selected positions on the casing before or after placing the casing in a well, such marker being capable of being located by a conventional casing collar locator. Apparatus to apply the marker is also shown.

REFERENCES:
patent: 2698920 (1955-01-01), Gieske
patent: 3019841 (1962-02-01), Ternow
patent: 3114876 (1963-12-01), Schuster
patent: 3393732 (1968-07-01), Murphey, Jr. et al.
patent: 3396788 (1968-08-01), Bell
patent: 4465140 (1984-08-01), Hoehn, Jr.

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