CHANGES IN WELL PRODUCTIVITY AFTER HYDRAULIC FRACTURING

Abstract

The article presents the results of studies aimed at evaluating the technological efficiency of a horizontal fracture formed in the near-wellbore zone of a homogeneous reservoir, taking into account the influence of the elastic properties of the filtering fluid on filtration processes and well productivity. An approach is proposed that makes it possible to determine the pattern of changes in the productivity index under the conditions of a homogeneous circular reservoir during the linear filtration of a homogeneous fluid prior to reservoir water breakthrough, when a horizontal fracture is formed in the near-wellbore zone. The paper presents research results that consider the influence of the elastic properties of the filtering fluid in the presence of a horizontal fracture in the near-wellbore zone of the well. The obtained relationships make it possible to more accurately predict changes in well flow rate during field operation. It has been established that the presence of a horizontal fracture contributes to the intensification of filtration processes and increases the well productivity index. The research results can be used in the design and optimization of oil and gas field development technologies. The practical significance of the work lies in the possibility of improving well operation efficiency through the rational selection of hydraulic fracturing parameters.