Published April 2019

Control on capillary instability in hydrodynamic impact on formation

E.M. Abbasov

G.M. Panahov

Under the conditions of watercut increase in extracted product and high development of resources, the methods of reservoir recovery rate increase based on the control of fluids motion in micro channels of porous medium become more significant. The studies on the capillary instability effect in porous media on oil displacement process have been carried out. The issues of efficiency increase of displacement of oils containing organics and heterorganic compositions – carbonic and naphthenic acids of low and medium molecular masses: high molecular resin and asphaltens, as well as various organic compositions have been considered. The studies justified that capillary processes and the instability of oil displacement front are the significant aspects of dependence of residual oil saturation and rigidity of hydrodynamic pressure in reservoir. One of the optimization ways of impact on the deposit considering capillary instability process in formation system is the creating method of consequential and periodically increasing hydrodynamic pressure providing coordinated accounting as a displacement aspect, as well as capacity-filtration characteristics of fluid-saturated reservoirs.