Method and apparatus for determining the orientation of a core c

Details Method and apparatus for determining the orientation of a core c Method and apparatus for determining the orientation of a core c

1977-07-19

1978-12-05

Purser, Ernest R.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Providing identifiable indication of core position in situ...

175173, 175 58, E21B 4702

Patent

active

041281349

ABSTRACT:
Method and apparatus for cutting a core in a bore hole and means of marking the core in which a groove is cut into the core along its length and providing an external arm in a definite angular relation to the core marking means and which may be aimed at some particular point so that when the core is removed, the marking on the core will be known to have the orientation with respect to the position that the arm is aimed such, for instance, as possibly a magnetic bearing or any other known reference mark on the surface to which the core may be related.

REFERENCES:
patent: 1456983 (1923-05-01), Hansen
patent: 1894995 (1933-01-01), Macready
patent: 2657013 (1953-10-01), Brady
patent: 3363703 (1968-01-01), Shewmake

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