稠油氧化降粘微乳催化剂的研制与性能评价

Preparation and evaluation of microemulsion catalyst using oxidative viscosity reduction for heavy oil

针对稠油氧化降粘开采技术,探讨了微乳催化剂用于稠油氧化降粘的性能。从合成的11种油溶性催化剂中优选出了催化剂Fe B,由其进一步制备出在稠油中分散性能更好的微乳催化剂,其由催化剂Fe B、馏分油、水和乳化剂组成,四者质量比为1.5∶40∶57.3∶1.2。性能评价结果表明,在微乳催化剂与稠油的质量比为0.2%、油与水的质量比为2∶3、空气与稠油的体积比为40∶1、氧化温度为200℃,反应时间为120 h的条件下,辽河油田稠油和绥中36-1油田稠油的粘度由8 088和2 004 m Pa·s分别降至683和267 m Pa·s,降粘效果明显。微乳催化剂应用于稠油氧化降粘开采技术,将有助于推进稠油高效开发提高采收率新技术的研究与应用。

The behavior of oxidative viscosity reduction using microemulsion catalyst was investigated according to theheavy oil recovery technology of oxidizing reduction. FeB is selected from11 kinds of synthetic oil-soluble catalyst,bywhich a microemulsion catalyst system can be made（mass ratio of catalyst FeB∶distillate oil∶water∶emulsifier is 1.5∶40∶57.3∶1.2）with better dispersion in the heavy oil. The performance evaluation results show that under the experimental con-dition（the mass ratio of micoroemusion catalyst and heavy oil is 0.2%,and mass ratio of oil and water is 2∶3,and volume ra-tio of air and heavy oil is 40∶1,and the oxidation temperature is 200 ℃and reaction time is 120 h）,the viscosity of heavyoil in Liaohe oilfield and Suizhong 36-1 oilfield dropped from 8 088 and 2 004 mPa·s to 683 and 267 mPa·s respectively,and the effect of viscosity reduction is obvious. Microemulsion catalysts used in the heavy oil mining technology of oxidativeviscosity reducing will help to promote the efficiency of the heavy oil development and the research and application of newEOR technology.