US Patent:
20110253452, Oct 20, 2011
Inventors:
Chris C. Beuershausen - Magnolia TX, US
Juan Miguel Bilen - The Woodlands TX, US
Larry M. Hall - Kingwood TX, US
Thomas Uhlenberg - Wienhausen, DE
Jason R. Habernal - Magnolia TX, US
Assignee:
BAKER HUGHES INCORPORATED - Houston TX
International Classification:
E21B 49/00
E21B 25/00
Abstract:
A coring apparatus is provided, which apparatus, in one exemplary embodiment, includes a rotatable member coupled to a drill bit configured to drill a core from a formation, a substantially non-rotatable member in the rotatable member configured to receive the core from the formation, and a sensor configured to provide signals relating to rotation between the rotatable member and the substantially non-rotatable member during drilling of the core from the formation, and a circuit configured to process the signals from the sensor to estimate rotation between the rotatable member and the non-rotatable member.