METHOD FOR SEARCHING LOCAL HYDROCARBONS IN HIGH-CARBON DEPOSITS OF BAZHENOV FORMATION Russian patent published in 2018 - IPC G01V9/00 G01V11/00 

FIELD: mining.

SUBSTANCE: invention relates to methods for searching for hydrocarbon deposits and can be used to detect hydrocarbons in high-carbon deposits of the Bazhenov suite. Essence: conduct a complex of geophysical studies: gravimetric, aeromagnetic and seismic. Identify areas of distribution of negative gravimetric and magnetic anomalies associated with the presence of acid extrusive domes and / or intrusions. Drill test wells in the identified areas and conduct their geophysical studies. According to the data of geophysical studies of wells, the sections of the deposits of the Bazhenov formation are determined, at which the values of natural radioactivity are not less than 20 microR/h. Core is taken from these sites and its mineralogical analysis is performed. Combine the data of geophysical studies and mineralogical analysis of the core. In this case, the results of the mineralogical analysis of the core determine the presence of algal dolomite in situ and / or vein dolomite, and / or dolomite ferruginous. In the presence of dolomite, it is concluded that the deposits of the Bazhenov formation are productive for oil and determine the boundaries of the deposit with the presence of free oil.

EFFECT: improving the accuracy of search results.

8 cl, 1 tbl, 10 dwg