Application of the Semi-Empirical Method of Neutron Tool Calibration in Oil Industry Practice

摘要

Since the late eighties the semi-empirical method of the porosity neutron tool calibration has been developed by Professor Jan Andrzej Czubek. Now this method is in common use being treated as a main part of calibration procedure in Geofizyka Krakow. The full set of calibration charts can be obtained for the wide range of the rock parameters and the borehole conditions as a final result of the semi-empirical method. The ability of the smoothing interpolation and reliable extrapolation of calibration charts beyond the range of experimental data is the most important feature of this method. The method can be employed for all kinds of neutron tools such as single or double detectors, measuring either thermal or epithermal neutrons. A base for the application of the semi-empirical method was prepared directly by Professor Czubek or under his direct supervision during last months of his life.