APPLICATION OF GEOLOGICAL AND TECHNOLOGICAL RESEARCH DATA TO CORRELATE AND CLARIFY THE STRUCTURE OF THE KAMYSHNYA FIELD

Abstract

The share of new exploration and appraisal wells is growing. The wells have a design depth of more than 6 000 meters. This became possible due to 3D seismic surveys, refined 3D field models, the latest equipment, and modernized drilling rigs. Geological and technological studies are an important part of geophysical surveys performed during well drilling. Their relevance lies in the initial disclosure of the geological section and the uniqueness of the initially selected material, which carries a lot of geological information and allows to correlate the section with the design data, compare the geological section with neighboring wells, and obtain refinements in the designs. The mud logging consists of two blocks: geological and technological. The technological research block provides real-time registration of many technological parameters of drilling and determines safe drilling conditions and monitoring of the well condition at all stages of construction. The geological survey block provides operational geological information during drilling. The relevance of modern geological-technological research in drilling wells is highlighted, the filtration-capacitance characteristics of reservoir rocks in wells are established, where, according to geophysical logging, intervals with established saturation and the uncertain nature of hydrocarbon saturation are issued and the data are used in the construction of correlation schemes on wells. Complex methods of selection of intervals of gas-saturated strata confined to different stratigraphic layers. The analysis of geological-geochemical data obtained during well drilling complements the justification of fluid saturation of reservoir rocks, and in the case when the methods of geophysical research are not performed in a complete complex and do not allow an unambiguous assessment of the nature of saturation, it is the only argument for obtaining the production zones.