Borehole measurements at great depth : Availability and limits of logging tools
The continental crust, supplying mankind with raw materials and energy but at the same time endangering it with earthquakes and volcanoes, has not been sufficiently explored. In the past two decades, therefore, major crust exploration programmes have been started, using deep boreholes. An increasing number of boreholes is now being drilled both for prospecting and for geoscientific purposes. The knowledge to be gained from a borehole is obtained either from the rock material recovered from it or from downhole measurements or, better, from both these methods. For reasons of economy, generally only a few drill cores are taken, and borehole measurements are performed instead. Deep borehole logging is, therefore, especially important.
Bibliographic Reference: EUR 13341 EN (1991) 88 pp., FS, ECU 8.75
ISBN: ISBN 92-826-2417-X
Record Number: 199110551 / Last updated on: 1994-12-02
Original language: en
Available languages: en