Synthesis and performance evaluation of a novel drag reducing agent for fracturing tight oil reservoirs
In order to improve the drag reduction efficiency of the smooth hydraulic fracturing fluid system and meet the needs of efficient fracturing development in tight oil reservoirs,a new type of drag reducing agent JY-1 was synthesized using acrylamide AM,2-acrylamide-2-methylpropanesulfonic acid AMPS,dimethyldiallylammonium chloride DADMAC,and long-chain alkyl acrylate SA-1 as raw materials through water solution polymerization.The synthesis conditions were optimized,and its drag reduction performance and temperature resistance performance were evaluated.The results showed that as the total monomer concentration and initiator concentration gradually increased in the synthesis reaction,the reaction temperature gradually increased,and the reaction time gradually extended,the apparent viscosity of the new drag reducer JY-1 first increased and then decreased.When the total monomer concentration was 25％,the initiator concentration was 0.05％,the reaction temperature was 8℃,and the reaction time was 6 hours,the apparent viscosity of JY-1 could reach its maximum.As the mass fraction of JY-1 gradually increases,the drag reduction rate shows a trend of first increasing and then decreasing.When the mass fraction of JY-1 is 0.3％,the maximum drag reduction rate can reach 72.5％.The higher the aging temperature,the lower the drag reduction rate of JY-1.When the aging temperature is 90℃,the drag reduction rate can still reach 65.3％.The research results indicate that the new drag reducing agent JY-1 has good drag reduction performance and temperature resistance,which can meet the needs of tight oil reservoir fracturing construction.
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维普
