Intelligent environment-friendly profile control agent applied to oil field water well

Abstract

The intelligent environment-friendly profile control agent comprises a curing agent, a toughening agent, a dispersing agent, a high-molecular polymer, an organic composite resin cross-linking agent A and an organic composite resin cross-linking agent B. The organic composite resin cross-linking agent A is a profile control (flooding) cross-linking agent A for oil extraction, the molecular formula of the profile control (flooding) cross-linking agent A for oil extraction is C7H8O, and the molecular formula of the profile control (flooding) cross-linking agent B for oil extraction is C7H8O. The organic composite resin (flooding) cross-linking agent B is a profile control (flooding) cross-linking agent B for oil extraction, the molecular formula of the profile control (flooding) cross-linking agent B for oil extraction is CH4N2S, and the high-molecular polymer is polyacrylamide. According to the intelligent environment-friendly profile control agent applied to the oil field water well, a gel system of a high-strength three-dimensional space net-shaped structure is formed, the water absorption profile of a water injection well can be effectively improved, and then the purpose of changing the liquid production profile of a communicated oil well is achieved; the profile control agent is suitable for profile control, flooding and plugging of water flooding and polymer flooding blocks.

Description

technical field [0001] The invention relates to the technical field of profile control agents for oil wells, in particular to an intelligent and environment-friendly profile control agent applied to oilfield water wells. Background technique [0002] Substances that can adjust the suction profile of the water-injected formation are called profile control agents. Most of the water injected into the oil layer (80% to 90%) is absorbed by the high permeability layer, and the injection profile is very uneven. In order to play the role of medium and low permeability layers and improve the sweep coefficient of injected water, it is necessary to adjust the injection profile of the water injection well. There are mainly precipitation-type profile control agents, such as sodium carbonate-ferric chloride, sodium silicate, ferrous sulfate, sodium silicate-calcium chloride; gel types such as hydrolyzed polypropylene phthalamide and chrome-formaldehyde compound: resin Type profile contr...

AI Technical Summary

Problems solved by technology

The profile control effect of profile control agents currently used in oil wells needs to be improved