ASSESSMENT OF COMPLIANCE OF THE COMPUTER SIMULATION RESULTS OF LIQUID FLOW TO FRACTURE FORMATION WITH REAL DATA

Abstract

The relevance of the study is caused by the need to accurately calculate the parameters of hydraulic fracturing, which is used now more often as a method of intensifying the inflow, as well as a method of increasing oil recovery due to the fact that more often oil and gas reserves in various fields have become confined to hard-to-recover ones. Therefore, for the most accurate assessment of the effectiveness of hydraulic fracturing, it is necessary to choose a model that will describe hydraulic fracturing most accurately. The purpose of this research is to analyze the main one-dimensional models of hydraulic fracturing, assess their convergence with real data and identify the most accurate model using data from the Vankor oil and gas field. Object: one-dimensional models of hydraulic fracturing. Methods: simulation of hydraulic fracturing in the Python programming language, followed by an assessment of the convergence of the simulated data with real data from the field. Results. It was shown that the radial model of hydraulic fracturing had the highest convergence among the main one-dimensional models of hydraulic fracturing using data from the Vankor oil and gas field. The PKN (Perkins and Kern and Nordgren) model had a convergence of 60,3 %, the KGD (Khristianovich and Zheltov and Geertsma and de-Klerk) model had a convergence of 68,9 % with real data from the field, and the radial model had a convergence of 78,2 % with real data. However, these models do not still describe hydraulic fracturing with convergence of 100 %. For this reason, the next aim of study is to increase the convergence of model that describes hydraulic fracturing and create two- and three-dimensional models. Conclusion. It was determined that the radial model has the highest convergence among the main one-dimensional hydraulic fracturing models (convergence 78,2 %).

Keywords

• oil inflow
• hydraulic fracturing
• model
• pkn
• kgd
• radial model
• hydraulic fractures