ORGANO-MTNERAL COMPOSITION OF ROCKS AND PHYSICO-CHEMICAL PROPERTIES OF MICRO-OIL AND KEROGEN OF ROCKS LOCATED ON DIFFERENT STAGES OF OIL BEARING OF SOUTH KHYLCHYUS OIL FIELD AS PER DATA OF SCANNING CALOREMETRIC AND THERMOGRAVTMETRIC STUDIES (p. 13)
Thermal and photometric methods were used to study composition and physical properties of kerogen and micro-oil and rock organomineral composition of two wells of South Khylchyus oil field. The rocks contain small amounts of immature kerogen, not entering "oil window", consequently, they are not considered maternal rocks. At the same time they contain rather remarkable amount of bitumen, characteristics of which are similar to those of micro-oil. This is proved by presence of light benzino-kerosene fractions, high amount of paraffins and oils and low content of resins as well as by physical properties, in particular, high oxidation heat of oil fraction. These properties are characteristic of mature methane (paraffin) oil. Moreover, these properties are not characteristic of little transferred protooil, syngenetic rock. Insignificant differences of micro-oil physical properties within section of one of the wells may witness possible hydrodynamic connection between collectors. Bitumen should be viewed as migrated macro-oil and rock as a collector.