METHOD AND SYSTEM FOR ENABLING ACQUISITION OF BOREHOLE SURVEY DATA AND CORE ORIENTATION DATA

METHOD AND SYSTEM FOR ENABLING ACQUISITION OF BOREHOLE SURVEY DATA AND CORE ORIENTATION DATA

A system 10 and method 50 of enabling the acquisition of borehole survey data and core orientation data in a single instrument trip in a core drill 12 having a drill string 18 and an inner core barrel assembly 16. The method uses a borehole survey tool 14 that is arranged to at least log its positio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: McLeod, Gavin, Jabbal, Gertej Singh, Brown, Kelvin
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:A system 10 and method 50 of enabling the acquisition of borehole survey data and core orientation data in a single instrument trip in a core drill 12 having a drill string 18 and an inner core barrel assembly 16. The method uses a borehole survey tool 14 that is arranged to at least log its position in three-dimensional space. The borehole survey tool 14 is run down the drill string 12 in which the inner core barrel assembly 16 is installed. The inner core barrel assembly 16 is arranged to either provide or facilitate detection of an indication of tool face of a core sample 24 held in the inner core barrel assembly 16. The indication of tool face is then transferred mechanically or electronically to the visiting borehole survey tool 14.