Development of integrated technology influencing on the high-temperature Jurassic reservoirs with a heterogeneity permeability

Abstract

An advance of the rate of reserves development over the water cut rate characterizes the production in the permeable-heterogeneous high-temperature Jurassic sandstone sediments by waterflooding. It is necessary to jointly influence on such oil reservoir by the methods of enhanced oil recovery and the injectivity profile aligement for increasing of additional production of them. Increasing the coefficients of oil displacement by water (Kdisp.) and the coverage of the reservoir by waterflooding this will allow. A significant quantity of projects related to the use of surfactant compositions to increase oil recovery in high-temperature reservoirs are based on the use of internal olefin sulfonates (IOS). However, such projects risk being unprofitable, without the use of tax incentives. The research presents a composition of inexpensive and available large-scale reagents, which can increase a positive economic profitability of the project, despite the fact that the residual oil saturation during the process decreases to a lesser extent compared to compositions containing IOS. On the example of several oilfields, developing a methodology developing of an oil deposit using the technology of complex stimulation based on surfactant and polymer gel compositions is shown. This study includes carrying out physicochemical and filtration experiments, as well as hydrodynamic modeling of the process.