Zastosowanie metod radiometrii wiertniczej do ilościowego określania składników litologicznych oraz właściwości fizycznych przekrojów piaszczysto-ilastych
Abstract
THE USE OF WELL LOGGING RADIOMETRIC METHODS FOR QUANTITATIVE DETERMINATION OF LITHOLOGICAL COMPONENTS AND PHYSICAL PROPERTIES OF SANDY-CLAY ROCKS
Summary
Constant increase in the accuracy of radiometric measurements, the introduction of calibration and standardization of probes and, finally, of new types of gamma-gamma probes for determining volume weight markedly increased the range of geological problems solvable on the basis of well-logging data. Actual possibilities of utilizing neutron-gamma, gamma, and gamma-gamma logging methods for determining lithological components, effective porosity, and volume weight of rocks forming borehole section are illustrated on an example of the results of geophysical studies of sandy-day Devonian rocks penetrated by Wilga IG-1 borehole. Accuracy of various radiometric methods is discussed and the results are compared with those obtained from laboratory analyses of core material.
Summary
Constant increase in the accuracy of radiometric measurements, the introduction of calibration and standardization of probes and, finally, of new types of gamma-gamma probes for determining volume weight markedly increased the range of geological problems solvable on the basis of well-logging data. Actual possibilities of utilizing neutron-gamma, gamma, and gamma-gamma logging methods for determining lithological components, effective porosity, and volume weight of rocks forming borehole section are illustrated on an example of the results of geophysical studies of sandy-day Devonian rocks penetrated by Wilga IG-1 borehole. Accuracy of various radiometric methods is discussed and the results are compared with those obtained from laboratory analyses of core material.