Core marking system for a sidewall coring tool

Details Core marking system for a sidewall coring tool Core marking system for a sidewall coring tool

1992-08-24

1994-05-10

Neuder, William P.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Providing identifiable indication of core position in situ...

175 58, 175244, E21B 2516

Patent

active

053100131

ABSTRACT:
A system for reliably indexing and separating sidewall core samples obtained with a sidewall coring tool comprises markers made of a magnetic material and a mechanism body made of a combination of magnetic and non-magnetic materials to reliably insert and position markers in between successive core samples. The sidewall core is not altered in any way by the marking process. Further, a flexible rubber boot apparatus is disclosed to ensure the complete transfer of retrieved samples in cases where the sample is broken, shattered or segmented and to ensure that broken, shattered or segmented cores will be retrieved in cases where the borehole is horizontal and the tool must operate in a horizontal position or in any other rotational orientation.

REFERENCES:
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patent: 4449593 (1984-05-01), Jageler et al.
patent: 4461360 (1984-07-01), Mount, II
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patent: 4714119 (1987-12-01), Hebert et al.
patent: 5067763 (1991-11-01), Aoyama
patent: 5096091 (1992-03-01), Heu

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