Remote operation wire line core sampling device

Details Remote operation wire line core sampling device Remote operation wire line core sampling device

2004-09-01

2010-06-29

Bagnell, David J (Department: 3676)

Wells

Processes

Using microorganisms

C166S214000, C166S240000, C166S245000, C166S249000, C166S250010

Reexamination Certificate

active

07743827

ABSTRACT:
Remote operation wire line core sampling device capable of increasing efficiency of working and maintaining a wall of a hole using a stabilized sea-bottom core drill at a sea-bottom, and adopting a wire line system. The device includes a drill rod held by a chuck of the sea-bottom core drill, a wire line core barrel having, at a tip thereof, a bit for annularly drilling into ground, an inner tube assembly detachably incorporated in the wire line core barrel, and an over-shot assembly having a function for engagement thereof with a spear head part at a top end of an inner tube assembly. The device also includes a water swivel in which water supply ports are formed at upper and lower parts thereof, a modified built-in type over-shot assembly is formed at upper and lower parts thereof, and a modified built-in type over-shot assembly is incorporated therein to reside at an intermediate part thereof.

REFERENCES:
patent: 1499024 (1924-06-01), Miller
patent: 3120282 (1964-02-01), Pickard
patent: 6105692 (2000-08-01), Clarke et al.
patent: 11-256974 (1999-09-01), None
patent: 2002-266585 (2002-09-01), None
patent: 2002-285780 (2002-10-01), None
International Preliminary Report on Patentability issued Jun. 20, 2006, in International (PCT) Application No. PCT/JP2004/013001 of which the present application No. 10/563,366 is the U.S. National Stage.

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