GAMMA-RESONANCE SPECTROSCOPY IN STUDYING OIL-BITUMEN-CONTAINING RESERVOIRS - OPPORTUNITIES AND PERSPECTIVES OF APPLICATION

There are given the results of application of gamma-rezonance (mossbau er) spectroscopy for determination of mineral composition and, in part icular, the content and type of clay minerals in samples of main oil-b itumen formations of deposits of Tatarstan which are terrigenous (sand stones alevrolites, their transitional rocks) and carbonate reservoirs . The cement minerals are shown to make a main contribution to spectra . In the samples of various genesis, they are syderite, pyrite, and sh eet silicates of clayey compound part of cement - smectite, illite and mixedlayer, and thin-dispersion low-crystallised fraction which are d etermined difficulty by other structure-sensitive methods. The oxidati on-reduction medium of sedimentation and transformation of formation-r eservoirs and influence of technogenous factors to clay minerals revea l themselves in spectra.