Technological feature of water shutoff operations

Abstract

At present, the use of a water flooding pattern in the development of oilfields at the late stage causes the premature water influx. Therefore, in recent years, the problem of eliminating water influx has become urgent. The productive horizons of the studied deposits are merged into a single object and exhibit a sharp heterogeneity in combination with a dense well pattern. This leads to the natural water influx and, as a result, to high water cut oil reserves. In conditions of a high level of water cut, a significant number of wells are idle and require geological and technological measures for recommencing, demulsification of the produced oil and disposal of the produced water. Therefore, oil companies suffer significant losses. The aim behind this paper is to analyze and evaluate the existing water shutoff techniques for the Vereisk and Bashkir carbonate sediments in the field studied.