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OSG measured total and spectral gamma ray (GR & SGR) inside the drill string in Lake Malawi. We avoided to run open hole logs because of the obviously very high risk of losing the logging sonde at reentry into the drill bit. 

 

LMDP, Lake Malawi, Malawi March 2005 601-951 m

Tools:  GR, SGR

Staff:  Carnein, Kück