Method and apparatus for establish the orientation of tools in a

Details Method and apparatus for establish the orientation of tools in a Method and apparatus for establish the orientation of tools in a

1993-08-02

1994-10-04

Dang, Hoang C.

Wells

Processes

With indicating, testing, measuring or locating

166 66, 166 665, 166255, 324346, E21B 4709

Patent

active

053517555

ABSTRACT:
The steel casing of a well is deliberately magnetized with a known orientation by the passage therethrough of a tool having a demagnetizing section and a magnetizing section along with a gyrocompass section and a magnetic compass section. The casing is first demagnetized and then remagnetized with a polarization which can be determined. The two compasses establish the orientation of the remagnetized casing.

REFERENCES:
patent: 2524360 (1950-10-01), Russell
patent: 3288210 (1966-11-01), Bryant
patent: 3307642 (1967-03-01), Smith
patent: 3704749 (1972-12-01), Estes et al.
patent: 4434654 (1984-03-01), Hulsing, II et al.
patent: 4465140 (1984-08-01), Hoehn, Jr.
patent: 4572293 (1986-02-01), Wilson et al.
patent: 5233304 (1993-08-01), Hubans

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