Patent ID: 7584055
Filing Date: 2009-09-01
Classification: E21B

Abstract:
1. A core orientation device for a core drill, the core orientation device comprising: an arrangement for providing signals associated with a rotational orientation of the core orientation device; means for maintaining a rotational orientation of a core drilled by the core drill stationary with respect to the rotational orientation of the core orientation device: processing means for processing the signals provided by the arrangement so as to provide processed data from which a measure of the physical orientation of the core orientation device can be established, the measure being associated with the rotational orientation of the core orientation device at a particular moment in time; memory for storing the processed data; interface means having first means for storing the processed data in the memory and second means for accessing the memory to provide the measure of the rotational orientation of core orientation device when required; and means for relating the measure of the rotational orientation of the core orientation device with the present rotational orientation thereof such that the core orientation device can be rotated so that the core reflects the measure of the rotational orientation of the core orientation device.