Forecasting the Effectiveness of Well Performance Improvement Techniques

Abstract

The article discusses the Pearson criterion method to determine the effectiveness of the chemical methods of the bottomhole formation zone treatment, the well zone and further improvement of the corresponding methods. Despite the rather high efficiency of the physicochemical methods used to increase oil recovery in the Shirotniy Ob area, ongoing geological and technical measures do not always ensure the optimal volumes of additional oil production achievement. Because of the bottom-hole formation zone treatments, an increase in the wells production rate was obtained. However, there are wells in which, after applying the enhanced oil recovery (EOR) techniques, the well production rates not only did not increase, but, moreover, their decrease and increase in water cut were noted. The increase in well flow rates after treatments varies widely; the effect duration is also different. The study of the effectiveness of the bottomhole formation treatment jobs organization modeling calls for a fundamentally new formulation and new methodological solutions. It should be carried out taking into account the economic feasibility of various forms and methods of work organizing, providing for maintenance based on analysis and geological field material processing by means of mathematical methods and computer technology. In this regard, the a systematic approach methodology application for analyzing and regulating the effectiveness of physicochemical methods of oil recovery enhancing at a late stage of oil field development is an urgent task and involves the creation of models that can significantly increase the of reliability of the justification and work organization for the use of progressive wells formation treatment techniques.