1results about How to "Solve temperature resistance" patented technology

This invention discloses a base liquid-type temperature-controlled viscosity-changing diverting agent and its preparation method, belonging to the field of oil and gas extraction technology. The temperature-controlled viscosity-changing diverting agent comprises the following components by mass fraction: 25%–30% cationic monomer, 1%–2.5% acrylamide, 1%–2% vinylpyrrolidone, 0.08%–0.1% initiator, 1%–2% chain transfer inhibitor, 20%–25% white oil, 2%–4% emulsifier, and the remainder being water; wherein the cationic monomer is one or more of trimethylaminopropylmethacrylamide chloride and acryloyloxyethyltrimethylammonium chloride. The temperature-controlled viscosity-changing diverting agent provided by this invention, through the synergistic compounding of the above components, can be used to formulate diverting acids for acidizing, effectively solving the problems of limited temperature resistance and adaptability of existing conventional diverting acid systems, and the low dispensing efficiency of conventional temperature-controlled viscosity-changing thickeners. In acidizing operations, it effectively improves the viscosity-changing diverting capability of the acid system and enhances the effectiveness of the measures.