Study on the adaptability of the general technical conditions and evaluation standards of the chemical agents used for oil recovery

At present, the chemical agents have the characteristics of variety, large dosage, stronger adaptability and pertinence, multiple brands and manufacturers, various systems, which lead to the standards served for these chemical agents are not uniform and their applications are restricted, and the market management is chaos.In view of these issues, it is urgently needed to standardize management.This paper systematically reviews the general technical conditions and evaluation standards of chemical agents used for fracturing, acidizing, profile control and water plugging as well as chemical flooding.The adaptability and problems of the current used chemical agents and working fluids is analyzed by integrating the recent development of chemical agents.We proposed suggestions for the development of chemical agents standardization:①Accelerate the establishment of standards for chemical agents used in unconventional reservoir oil and gas recovery; ②select representative chemical agents and working fluid products to set standards based on systematically preference of the new developed products; ③introduce "negative list" and "first used and first test" management regulations; ④establish information records system of chemical agents used in the whole process of oil field development and "compatibility table" of chemical agents; ⑤consider the technical requirement of security and environment protection while establishing standards.