"LiquiPerfPro" reagent for increasing the permeability of the well bottom hole zone

The purpose of the technology's development is to reduce the skin effect and restore the permeability of wells, which have experienced a significant reduction in permeability for various reasons, including contamination of the filter zone by oil-based drilling fluids during drilling. The developed alkaline-based new chemical composition, "LiquiPerfPro", reduces the interfacial surface tension on the rock surfaces contaminated by oil-based drilling fluid in the near-wellbore zone, altering the wetting angle in favor of oil and creating a hydrophilic surface. Additionally, it removes the oil screen formed on the weighting components present in the drilling fluid and reduces adhesion forces. After reacting with the oil-based component, the weighting components undergo segregation, increasing their ability to migrate and enabling them to be easily displaced from the pores. Furthermore, after the weighting particles are cleaned from the oil screen, their surfaces become open to other solvents, allowing the application of other traditional methods for deeper cleaning of contamination. Moreover, the "LiquiPerfPro" reagent, due to its physico-chemical properties, has the ability to penetrate a significant distance from the wellbore into the drainage area. The application of the "LiquiPerfPro" reagent is also favorable for lithologically weakly cemented rocks, as it does not create the risk of formation collapse, unlike traditional acid treatment methods, and does not damage the matrix. The reagent can be applied to both production and injection wells. Keywords: Alkali; acid; permeability; reservoir model; wellbore zone; new chemical composition; surfactant; organic solvent; oil-based drilling mud.