响应面法优化稠油降黏剂降黏性能的研究  

Study on optimization of viscosity reducing performance of viscosity reducing agent for heavy oil by response surface method

作　　者：王绘鹏 杨昌华 张永伟 王辰 黄泽宇 Wang Huipeng;Yang Changhua;Zhang Yongwei;Wang Chen;Huang Zeyu(College of Petroleum Engineering,Xi’an Shiyou University,Xi’an 710065,China;Wenwei Oil Production Plant,Zhongyuan Oilfield Company,Puyang 457000,China)

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]中原油田分公司文卫采油厂,河南濮阳457000

出　　处：《化学推进剂与高分子材料》2024年第4期36-42,60,共8页Chemical Propellants & Polymeric Materials

摘　　要：为解决内蒙毛1井稠油难以采用传统工艺进行开采的难题,以丙烯酸十八酯、2–丙烯酰胺基–2–甲基丙磺酸、苯乙烯为原料制备了一种油溶性降黏剂。基于Box–Behnken响应面设计方法,分析了引发剂过氧化苯甲酰(BPO)加入量、反应时间、反应温度3个因素及其交互作用对降黏剂降黏性能影响的研究。结果表明:3个因素对降黏剂降黏性能的影响顺序为反应时间>引发剂BPO加入量>反应温度;引发剂BPO加入量和反应温度之间交互作用极为显著,其他因素的交互作用不显著。降黏剂合成时的最佳反应条件为m(BPO):m(总单体)=1.2%,反应时间为5h,反应温度为70℃。在此优化条件下降黏剂的降黏率为48.73%,与理论值基本吻合。加入降黏剂后稠油的屈服应力和黏度值降为131Pa、18756mPa·s,降黏剂的起始分解温度为200℃。毛1井稠油的室内模拟驱油采收率提高11.22%。In order to solve the problem of heavy oil of Mao1 well in Inner Mongolia,which is difficult to be extracted by traditional technology,an oil soluble viscosity reducing agent was prepared by using octadecyl acrylate,2-acrylamido-2-methyl propanesulfonic acid and styrene as raw materials.Based on the Box-Behnken response surface design method,the influence of three factors including the amount of benzoyl peroxide(BPO)initiator,the reaction time and the reaction temperature,as well as their interactions on the viscosity reducing performance of the viscosity reducing agent was analyzed.The results showed that the influence of the three factors on the viscosity reducing performance of the viscosity reducing agent was in the order of reaction time>amount of BPO initiator>reaction temperature;the interactions between the amount of BPO initiator and reaction temperature were extremely significant,while the interactions of other factors were not significant.The optimal reaction conditions for synthesizing viscosity reducing agent were as follows:m(BPO):m(total monomer)=1.2%,the reaction time was 5h,the reaction temperature was 70℃.The viscosity reducing rate of the viscosity reducing agent under this optimal condition was 48.73%,which was essentially consistent with the theoretical value.After adding the viscosity reducing agent,the yield stress and viscosity values of heavy oil decreased to 131Pa and 18756mPa·s,respectively,and the initial decomposition temperature of the viscosity reducing agent was 200℃.The recovery rate of the indoor simulated oil displacement of heavy oil in Mao1 well was increased up to 11.22%.

关 键 词：稠油 降黏剂 油溶性 响应面法 

分 类 号：TE39[石油与天然气工程—油气田开发工程]