GERMANY'S DEEP DRILLING PROJECT ADVANCES TECHNOLOGY IN CORING

Germany's Kontinentales Tiefbohrprogramm (KTB) deep drilling project at Windischeschenbach, Bavaria, has demonstrated a major advance in coring technology. The government funded research hole (OGJ, Nov. 11, 1991, p. 49) reached 6,672.4 m (21,885 ft) with a diameter of 12 1/4 in. July 22, said Claus Chur, head of drilling for the project. Hole inclination was only 0.08.

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