METHOD OF CONTROL OVER DEVELOPMENT OF NON-UNIFORM OIL RESERVOIR (VERSIONS) Russian patent published in 2008 - IPC E21B43/22 C09K8/506 

FIELD: mining.

SUBSTANCE: method of control over development of non-uniform oil reservoir consists in mixing of components - latex, alkali and water and pumping of obtained composition into pressure wells with following pressing into reservoir with waste water and using soda ash as alkali; mixing is carried out in an intermediary capacity by means of introducing jet-into- jet of 2-26% of water solution of latex and 2-20% of water solution of soda ash till obtaining stable fine sediment in the volume of the mixture; further the said mixture is supplied into a dozing pump in the flow of waste water of 1.02-1.2 g/cm³ density supplied under pressure at ratio 1: (1-30) at the said ratio of components. In the other version of the method 0.005-0.01% of water solution of polyacrilamide- PAA or 0.05-2.0% of water solution of carboxymethyl cellulose -CMC are pumped into the reservoir before pressing at ratio of the said solution and composition (5-6):1.

EFFECT: increased efficiency of development of non-uniform oil reservoirs due to upgraded insulation properties of pumped composition.

4 cl, 2 tbl