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Logging While Drilling Via Autonomous Sonde

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Authors
Kepic, Anton
Dupuis, Christian
Stewart, G.
Wilkinson, B.
Greenwood, Andrew
Podolska, Anna
Date
2014
Type
Conference Paper

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Citation
Kepic, A. and Dupuis, C. and Stewart, G. and Wilkinson, B. and Greenwood, A. and Podolska, A. 2014. Logging While Drilling Via Autonomous Sonde, in Proceedings of the 76th EAGE Conference & Exhibition, 16-19 June 2014. Amsterdam, Netherlands: European Association of Geoscientists and Engineers.
Source Title
76th EAGE Conference & Exhibition incorporating SPE EUROPEC 2014
Source Conference
76th EAGE Conference & Exhibition incorporating SPE EUROPEC 2014
School
Department of Exploration Geophysics
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Abstract

We present a method of geophysical logging while tripping drill rods to produce logs similar to wireline logs. The process is autinmous in that it does not require any significant changes by the driller and does not require any modifications to the drill rig. Using starting depth, rod length, and sensors on the sonde a geophysical log can be created when the drill rods are retreived upon hole completion. Thus, this methodology is very suitable for slimhole and diamond drilling methods that do not case the completed hole. Such holes often collapse and are too expensive to log via wireline logging.