Drilling rig mast erection system

A drilling rig mast erection system includes a mast support shoe that is fixedly attached to a drilling rig substructure and has a support shoe pinned connection. A bottom mast section has a first mast pinned connection that is adapted to be pivotably connected to the support shoe pinned connection....

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Bibliographische Detailangaben
Hauptverfasser:	Thiessen Jay John, Burlet Donald Leonard, Konduc Kameron Wayne
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES CEILINGS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FENCING FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS MASTS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS ROOFS SWIMMING OR SPLASH BATHS OR POOLS TENTS OR CANOPIES, IN GENERAL WALLS, e.g. PARTITIONS
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