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应用流动性改进剂（化学添加剂）可改善原油的低温流动性能。本文以烯烃、脂肪酸烯基酯和烯基酰胺或烯基磺酸盐为主要原料，在含有自由基引发剂的溶液中，在温度５５～８５℃，压力５～９ＭＰａ，聚合３～８ｈ合成了能降低原油凝点的流动性改进剂Ｈ８９－２（三元共聚物）。综合评定了Ｈ８９－２改善青海原油低温流动性能的效果，在原油中加入１５×１０－５Ｈ８９－２，可使凝点从３１．５℃降至１２℃；表观粘度（２０℃）从５１５８．９ｍＰａｓ降至７９．２ｍＰａｓ；屈服值从７３．６Ｐａ降至０Ｐａ。探讨了Ｈ８９－２的降凝作用机理。因为Ｈ８９－２既含有适度的烷烃碳链，又含有两种极性不同的极性基因，所以对原油的适应性较强。
Application of liquidity improvers (chemical additives) can improve the low-temperature flow properties of crude oil. In this paper, olefin, fatty acid alkenyl ester and alkenyl amide or alkenyl sulfonate as the main raw materials, containing free radical initiator solution, at a temperature of 55 ~ 85 ℃, pressure 5 ~ 9MPa, polymerization of 3 ~ 8h synthesized Flowability improver H89-2 (terpolymer) that reduces the freezing point of crude oil. Comprehensive evaluation of the H89-2 to improve the low temperature flow properties of Qinghai crude oil effect, adding 15 × 10-5H89-2 crude oil can make the freezing point from 31.5 ℃ to 12 ℃; apparent viscosity (20 ℃) from 5158 .9mPas dropped to 79.2mPas; yield value dropped from 73.6Pa to 0Pa. The hypnotic mechanism of H89-2 was discussed. Because H89-2 contains both moderate alkane carbon chain, but also contains two polar genes of different polarity, so strong adaptability to crude oil.