MOBIL BORERIG MED TELESKOPISK BÆRESTRUKTURKASSER

A drilling rig mast erection system is described that comprises a mast support shoe (210) fixedly attached to a drilling rig substructure (100), said mast support shoe (210) comprising a support shoe pinned connection (210p), a bottom mast section (220) of a drilling rig mast (200), said bottom mast...

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Bibliographische Detailangaben
Hauptverfasser:	BURLET, Donald, Leonard, THIESSEN, Jay, John, KONDUC, Kameron, Wayne
Format:	Patent
Sprache:	dan
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:	A drilling rig mast erection system is described that comprises a mast support shoe (210) fixedly attached to a drilling rig substructure (100), said mast support shoe (210) comprising a support shoe pinned connection (210p), a bottom mast section (220) of a drilling rig mast (200), said bottom mast section (220) comprising a first mast pinned connection (221 p) that is adapted to be pivotably connected to said first pinned connection (210p) of said mast support shoe (210), and a mast positioning apparatus (550) that is adapted to pivotably position said bottom mast section (220) so that said first mast pinned connection (221 p) is positioned adjacent to said support shoe pinned connection (210p), said mast positioning apparatus (550) comprising a bottom mast support spreader (502) having a first end that is adapted to be pivotably connected to said bottom mast section (220) at a first spreader end pinned connection (220p) and a mast erection apparatus (501) having a first end that is adapted to be pivotably connected to said bottom mast support spreader (502) at a first mast erection apparatus pinned connection (502p).