Corebarrel

Details Corebarrel Corebarrel

1987-05-18

1988-08-23

Novosad, Stephen J.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Providing identifiable indication of core position in situ...

175236, 175246, E21B 2516, E21B 4902

Patent

active

047654147

ABSTRACT:
A corebarrel for use downhole and having an outer tube and an inner tube which are relatively rotatable and interconnected through a bearing assembly, and a solid state survey device for use in oriented coring and disposed within the inner tube below the bearing assembly.

REFERENCES:
patent: 1701724 (1929-02-01), McLaughlin
patent: 1769152 (1930-07-01), McLaughlin
patent: 1777010 (1930-09-01), McLaughlin
patent: 2489566 (1949-11-01), Engle
patent: 2555275 (1951-05-01), Millison
patent: 3207239 (1965-09-01), Thigel
patent: 4638872 (1987-01-01), Park et al.
Rowley et al., "Oriented Cores", Apr. 24, 1964.

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