The method of pressure recovery curves to assess the effectiveness of acoustic effects on the reservoir

Abstract

© Tyumen 2019. All rights reserved. The acoustic impact on the reservoir is an unconventional technology for enhanced oil recovery, which is of interest because it is more economical and environmentally friendly. Numerous research papers indicate that elastic waves improve the properties of porous reservoirs. The well performance indicators may indicate a change in the filtration properties of the reservoir during acoustic exposure in field conditions. This paper explores the prospects for using the method of pressure recovery curves to estimate changes in the characteristics of the bottomhole formation zone in field conditions. Based on the generalization of laboratory data, a mathematical description was obtained of the spatial change in the filtration properties of a porous medium upon acoustic exposure. a mathematical model of the classical elastic regime of plane-radial filtration has been developed for the case of inhomogeneous properties of a porous medium. The calculated data on the time dependence of the pressure recovery in the reservoir model when the well is shut down suggests that it is possible to use the pressure recovery curves method to estimate the effectiveness of the wave effect on the reservoir.