Electronic core orientation device

Details Electronic core orientation device Electronic core orientation device

E - Fixed Constructions

21

B

E21B 49/06 (2006.01) E21B 25/16 (2006.01) E21C 39/00 (2006.01)

Patent

CA 2456506

This invention provides a low cost, accurate and reliable core orientation method for inclined holes. The system consists of a sensor, display unit, specialized core tube, core tube alignment clip and where necessary, a customized drill rod extension. The sensor's components are: 3-axis accelerometer, clock, power source, programming and memory circuitry, shock absorbers and data transfer system, all encased in a standard diameter core tube extension. This sensor is attached to the top of the specialized core barrel during drilling. The sensor takes readings for core rotation and core inclination data for each core run, which may be used for other survey purposes. The specialized core barrel is aligned with the sensor, to facilitate accurate marking of the retrieved core. The display unit retrieves the core orientation data from the sensor and stores it on a memory card.

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