Core drilling tool

Details Core drilling tool Core drilling tool

1989-04-21

1990-09-11

Novosad, Stephen J.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

166 64, 166 651, 175 44, 175 45, 175 50, 175246, E21B 2502, E21B 47022, E21B 4706, E21B 4712

Patent

active

049554387

ABSTRACT:
A core drilling tool for drilling rock in underground soil formations which includes an outside pipe and an inside pipe therein that can be conveyed separately to the surface. The inside pipe includes a core-receiving receptacle at its lower end, and at its upper end is provided with a measurement unit for on-site acquisition, processing and storage of data, such as borehole, core and/or drilling process parameters.

REFERENCES:
patent: 2820610 (1958-01-01), Martinez
patent: 3059707 (1962-10-01), Frisby
patent: 3346059 (1967-10-01), Svendsen
patent: 4515225 (1985-05-01), Dailey
patent: 4562560 (1985-12-01), Kamp
patent: 4715022 (1987-12-01), Yeo
patent: 4765414 (1988-08-01), Moore

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