The purpose of this article is to generalize the approaches to managing the competitiveness of the enterprise, to theoretically justify and develop recommendations for forming the effective system of enterprise’s competitiveness management. The article examines the main aspects of the issue of managing the competitiveness of the enterprise in modern conditions. It generalizes the approaches to defining the essence of “management of enterprise’s competitiveness” category, from the standpoint of the process and management functions, and a set of certain actions and methods of influence. The content of competitiveness management as a scientific category is analyzed; the main approaches to the management of enterprise’s competitiveness as a subject of economic competition are identified. The factors of external and internal environment of the enterprise influencing formation of competitive potential and system of competitive advantages of the enterprise are outlined and the interrelation of key characteristics of the state of an enterprise with its competitiveness is clarified. The combination of certain components altogether characterizes the state and capabilities of the enterprise and allows creating, strengthening, and developing its own competitive advantages. The methods for assessing the effectiveness of enterprise’s management are described and measures to improve the efficiency of managing its competitiveness in the context of its management functions and activities are proposed. The system of measures proposed allows creating and maintaining the appropriate level of competitive advantages, as well as determining strategic, current, and operational management directions for increasing the enterprise’s competitiveness. The practical significance of this article is to prove that forming a comprehensive system of competitiveness management ensures the successful operation, financial stability and development of the enterprise in a competitive and constantly changing environment, providing comprehensive services, increasing income and financial results, improving business efficiency and management decisions.
The geological features of the reservoir structure are of great importance in the development of oil and gas fields in the West Siberian. A productive formation is usually considered as an integral system that includes two interrelated components: rocks and fluid. In this system, the appearance of water is usually associated with negative consequences - a decrease in the elastic-strength properties of geological substrate and the loss of reservoir rocks stability. How critical is the emergence of water from a well construction and / or operation point of view? The search for an answer to this question has become the main goal of the multidisciplinary investigations presented in this paper. In the framework of these studies, an assessment of the in-time stability of an open borehole in case of presence or penetrating different reservoir fluids was carried out. The calculations were based on the high-resolution 4D modeling, which took into consideration the main dynamic and geomechanical effects stipulated by different production scenarios. The concepts of the interrelations in the "rock - fluid" system were based on the results of special core studies. The main idea of these experiments was to reproduce the saturation conditions of reservoirs, initially related to transition zones and characterized by the presence of different types of fluids (formation water / oil). Testing was carried out on duplicate samples, which were characterized by very similar petrophysical properties, and were saturated with various models of formation fluid. The research program included both standard geomechanical tests and experiments on a thick-walled cylinder, as well as experiments with brine of different chemical composition, salinity, temperature and affected by different methods of saturation. Obtained results confirmed the substantial influence of the formation fluid on the elastic-strength properties of the rocks. At the same time, a fundamental role is played not only by the type of saturating fluid, but also by the saturation technique. Several such techniques of core material saturation were analyzed. It provides critical knowledge for calculating the stability of the wellbore in conditions of incompatibility of fluids and rocks, modeling water breakthroughs and sand production, and also for calculating temporal effects. Further modeling made it possible to predict the change in open hole stability under different production scenarios. Finally, it was demonstrated that even with a significant water cut (up to 50%), it is possible to keep the wellbore open and to continue the well operation. The results obtained become critical for evaluating the performance of the field at a later stage of development, especially when there are risks of water breakthrough into the reservoir. The main paradigm in which the industry is currently operating is the idea that the appearance (breakthrough) of formation water leads to a decrease in the strength of the rocks, sand production and, finally, to the destruction of the wellbore. The results of presented study change this paradigm. Integrated geomechanical modeling and core studies applying different saturation techniques make it possible to analyze various mechanisms of water penetration into the reservoir, which is not necessarily associated with both subsequent sand production and wellbore destruction.
This paper presents the results of studying petrophysical and geomechanical properties of rocks by conducting thick-walled cylinder core tests (TWCT) - triaxial compression with flushing by various fluids. Experiments were carried out for a limited number of core samples from the Ourinskoe Field, which is a part of the Western Siberia oil and gas-bearing basin. In the framework of the study, various core testing schemes were applied, the results of experiments using different fluids for flushing were analyzed, and the optimal testing parameters (including loading rate, washing time, sample relaxation time, etc.) were selected. The result of the research is a detailed analysis of rock fragments removed by different fluids as a result of triaxial compression and subsequent destruction of a thick-walled cylinder. The paper presents the qualitative relations of the particle size distribution on the prevailing deformation patterns (elastic or plastic), analyzes some petrophysical properties of the strata that control the behavior of the system "rocks – fluid", and consider typical scenarios for TWCT experiments. The obtained experimental data served as an important source of additional information for assessing the draw-down pressure that controlled sand inflow into the wellbore, to determine its particle size distribution, as well as to calculate the size of the wire-wrapped filter liner completion for sand preventing.
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