FREE-FALL CORNER

This invention is directed to an apparatus utilized for extracting earth cores from sub-sea formations. In particular, the apparatus may be dropped from a carrier vessel, whereupon it descends as a completely self contained unit to the ocean bottom. After penetration and extrusion by the apparatus i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	PAYNE J,US
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	This invention is directed to an apparatus utilized for extracting earth cores from sub-sea formations. In particular, the apparatus may be dropped from a carrier vessel, whereupon it descends as a completely self contained unit to the ocean bottom. After penetration and extrusion by the apparatus in the ocean bottom an automatic condition-responsive device facilitates the extrication of the apparatus from the marine bottom by providing a sufficient buoyant force to lift the apparatus to the ocean surface.