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 i...
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creator | McLeod, Gavin Jabbal, Gertej Singh Brown, Kelvin |
description | 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). |
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subjects | 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 |
title | Method and system for enabling acquisition of borehole survey data and core orientation data |
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