Efficiency analysis of operation for gas condensate fields in the North Caucasus at the final stage of development

Abstract

Relevance. The article considers the issues of minimizing the negative impact of complications associated with changes in the state of the productive deposit in the process of operation of gas condensate fields at the final stage of development, leading to a decrease in flow rate and withdrawal of wells from the active stock. The situations when in gas condensate fields the development is carried out unevenly by area and/or section, which leads to the presence of unexploited deposits, slowing down the rate of field development, reducing the final coefficient of gas-condensate yield and worsening economic indicators have been studied. The choice of a variant for exploitation regulation of productive deposits by objects, connected with specification of residual gas reserves and their distribution in the reservoir, preventing reduction of the final gas-condensate yield coefficient and deterioration of economic indicators, is substantiated. Aim. To determine ways to minimize the negative impact of emerging complications in the process of operation of gas condensate fields at the final stage of development, leading to a decrease in flow rate and withdrawal of wells from the active stock. Objects of research. Multilayer gas condensate fields at the final stage of development. Methods are based on the analysis and generalization of field data on the studied problems, as well as on the results of their own analytical and theoretical studies using mathematical statistics with the help of modern hardware and software. The actual dependence of the reduced reservoir pressure on the accumulated gas withdrawal, adapted from the field development history, was used to compile a calculation model for forecasting the technological indicators of the object development. Results. Recommendations for regulating the development of objects related to the specification of residual gas reserves and their distribution in the deposits, minimizing the negative impact of emerging complications in the process of operation of gas condensate fields at the final stage of development, leading to a decrease in flow rate and withdrawal of wells from the active stock were offered.