New gel-forming compositions and emulsion systems development and evaluation for permeability control in heterogeneous reservoir and water-cut reduction in producing oil
<i>Background </i>Gel-forming compositions and surface-active materials (SAM) represent a special interest for solving problems of oil recovery increase in heterogeneous reservoirs, sweep efficiency increase, inactive intervals inclusion into development and well intake capacity increase. <i>Aims and Objectives </i>Experimentally select optimal chemical compositions and assess efficiency of their action on heterogeneous reservoir in order to reduce well water-cut and increase oil recovery. <i>Results </i>Analysis of results has revealed good waterproofing capacity gel-forming compositions, permeability to water can be reduced up to 50 times depending on oil saturation and formed gel is stable with time. The most prospective compositional systems are based on SAM of different classes, which allow to vary components and to select systems for different conditions.