The current level and prospects for the development of large-volume injection technologies using polymers to increase oil recovery

Currently, there is a worldwide decline in the level of production while maintaining consumption. At same time, newly discovered fields are not able to compensate for volumes extracted oil, since reserves mainly small or medium. In this regard, it relevant introduce technologies increase oil recovery at already drilled and developed fields. A promising method increasing polymer flooding, which has many years successful experience both Russia abroad. Polymer flooding technology consists adding dry injected water concentrations from 0.05 0.25 % order its viscosity, turn contributes improving process. The rim equalizes ratio mobility reservoir allows be uniformly displaced reservoirs heterogeneity permeability. key result implementation an coefficient by coverage process, as well gradual availability, without early breakthroughs injection wells. This wide limits applicability proven effectiveness various geological physical conditions. article will consider basis exposure, principle action, criteria applicability, main groups chemical reagents, accumulated domestic international design technology, development trends difficulties associated with introduction technology.