Regulation of water inflow from a layer
Nowadays the majority of oil deposits of "Azneft" Production Department are at the final stage of their development. This stage is characterized by growth of negative factors justified both by objective and subjective reasons, namely, irregular extraction of resources, water volume increase in the extracted product, raise of share of hardly extractable resources, aging and wearing-out of producing and injection wells' fund, etc. The performed laboratory researches resulted in proposing of cementing slurry, consisting of М-400 cement, 3003 polymer and water as isolation material. The main characteristics of cement slurry and stone are increasing of thickening time, perfection of adhesion and elastic properties. Isolating composition with high adhesive properties, consisting of M-400 cement, 3003 polymer composition and water is suggested. The amount of the polymer makes 3...4 % of water volume used for cement mortal preparation. Elastic-strength mass received as a result of these components mixing isolates water channels in layers with temperature up to 100 °С, preventing and limiting of big volumes of water inflow. Implementation of the technological process resulted in 25 % increase of daily oil production and 60 % water decrease, so the well goes on working without repairs. Economic efficiency received from introduction of a solution for isolation with elastic properties in 2 wells makes 15 000 $.