Boring or penetrating the earth – Processes – Sampling of earth formations
Patent
1976-01-08
1977-03-29
Novosad, Stephen J.
Boring or penetrating the earth
Processes
Sampling of earth formations
175250, 220 4E, 220239, E21B 2500, E21B 4902
Patent
active
040143937
ABSTRACT:
An apparatus for coupling to the base of a vertically suspended core barrel inside a drilling rig for controllably receiving intact the columnar mass of core material contained therein. A tubular housing is provided for connecting to the barrel and includes a piston element slidably positioned therein for abutting engagement with and underlying support of the core sample to be received from the barrel. The piston element includes expandable side walls adapted for frictional engagement with the side walls of the tubular housing. Control means are provided for controlling the expansion of the piston walls, the resultant friction produced therealong and the preferred rate of movement of the core into the tubular housing under the force of gravity. The construction of the tubular housing permits the core received therein to be retained in its original extracted condition while facilitating the handling, subsequent examination and analysis thereof.
REFERENCES:
patent: 1853581 (1932-04-01), Schmissrauter et al.
patent: 2164195 (1939-06-01), Waltermire
patent: 2482869 (1949-09-01), Polglase et al.
patent: 2588957 (1952-03-01), Brown
patent: 2843154 (1958-07-01), Hosking
patent: 2857933 (1958-10-01), Lithun
Hess J. Edward
Johnson Donald R.
Novosad Stephen J.
Phillips James H.
Sun Oil Company
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