THE INFLUENCE OF GEOLOGICAL HETEROGENEITY OF LAYERS ON THE WORK OF UNDERGROUND GAS STORAGE FACILITIES

Abstract

As a result of the analysis of studies in the field of the creation and operation of underground gas storage facilities (PSG) in the conditions of heterogeneous reservoirs, the lack of a comprehensive method for incorporating the heterogeneity factor at the stage of their design is established. As a result, there is a significant overestimation of project indicators comparing to actual and a decrease in the efficiency of the operation of the subsystem. In this article, the author presents methodological developments for the account of the heterogeneity of the reservoir at the design stage of the UGS, which contains specific proposals for the refinement of initial stocks and gas-saturated reservoir volume by reinterpreting the dependence of reduced reservoir pressure on the total amount of gas in underground gas storage. The purpose of this work is to assess the impact of geological and industrial factors on the technological performance of the PSG, created in exhausted gas deposits, by comparing the characteristics of the work of Oparsky and Bogorodchansky UGS. To achieve this goal, the geologicalindustrial features of the Oparsky and Bogorodchansky UGS have been investigated; the methodology for studying geological heterogeneity has been developed; the influence of geological factors on the technological parameters of the operation of the UHF is investigated. The results of the study are of practical importance. The use of the methodology for studying the nature of the heterogeneity of reservoir layers is necessary in the design of new gas storage facilities and in the adjustment of technological projects on gas-fired power stations that are in operation and created in non-uniform collectors.