Development of the non-stationary waterflooding technology

Abstract

Abstract The article analyzes the non-stationary waterflooding technology. The basic physical principles of the technology are described. The reasons for its low popularity among subsoil users are revealed. The article aims to substantiate the relevance of non-stationary technologies, conduct experimental-industrial works to adapt and create new non-stationary technologies, and determine conditions for their effective application. In the 1990s, Western technologies were widely used in the oil industry. Non-stationary waterflooding was not included in the list of these technologies. Despite its relative simplicity, the practical implementation of the non-stationary waterflooding technology requires preparation works. Non-stationary waterflooding is one of the most knowledge-intensive methods of enhanced oil recovery. Non-stationary waterflooding tends to “age”, i.e. its effectiveness decreases over time, which requires constant changes in the technology and its combination with other methods.