TELESCOPING DERRICK

A telescoping four-sided drilling derrick (20) and method or erection that i s to be positioned on a drill floor (F) over a well bore and is capable of withstanding severely adverse weather, environmental or geologic conditions. The derrick (20) is in several sections and includes a bottom section (...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	DESAI, VINOD
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BUILDING BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES CRANES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FENCING FIXED CONSTRUCTIONS HAULING HOISTING LIFTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES MASTS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS SWIMMING OR SPLASH BATHS OR POOLS TELEPHONIC COMMUNICATION TENTS OR CANOPIES, IN GENERAL TRANSPORTING
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