适用于稠油油藏的新型油溶性降黏剂研究及应用  

Research and Application of New Oil Soluble Viscosity Reducer for Heavy Oil Reservoir

作　　者：李成龙 周尚龙 荣家浚 曹秦智 蔡勇[5] 葛思佳 熊青山[1] LI Chenglong;ZHOU Shanglong;RONG Jiajun;CAO Qinzhi;CAI Yong;GE Sijia;XIONG Qingshan(School of Petroleum Engineering,Changjiang University,Wuhan,Hubei 430100,China;No.8 Oil Production Plant of Changqing Oilfield Branch,Xi’an,Shaanxi 710021,China;Xingang Company of Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;No.1 Oil Production Plant of Changqing Oilfield Branch,Yan’an,Shaanxi 716000,China;No.5 Oil Production Plant of Qinghai Oilfield Branch,Mangya,Qinghai 816400,China;Laojunmiao Production Plant,Yumen Oilfield Company,Jiuquan,Gansu 735019,China)

机构地区：[1]长江大学石油工程学院,430100 [2]长庆油田分公司第八采油厂 [3]新疆油田公司新港公司 [4]长庆油田分公司第一采油厂 [5]青海油田分公司采油五厂 [6]玉门油田分公司老君庙采油厂

出　　处：《钻采工艺》2021年第1期102-105,共4页Drilling & Production Technology

基　　金：“十三五”国家科技重大专项“大型油气田及煤层气开发”(编号:2017ZX05013)。

摘　　要：以甲基丙烯酸十八酯、丙烯酰胺衍生物和苯乙烯为合成原料,采用溶液聚合法合成了一种新型油溶性稠油降黏剂SER-1,并考察了单体配比、反应温度、反应时间以及引发剂加量对稠油降黏效果的影响。结果表明,降黏剂SER-1的最佳合成条件为甲基丙烯酸十八酯、丙烯酰胺衍生物和苯乙烯的摩尔比为9∶2∶3,反应温度为70℃,反应时间为5 h,引发剂加量为单体总质量的1.5%。降黏剂SER-1的加量为1 500 mg/L时,对稠油的净降黏率可以达到64.38%;降黏剂SER-1加入稠油中后,其胶质和沥青质含量明显降低,饱和烃和芳香烃含量明显增大,这表明研制的新型油溶性稠油降黏剂SER-1对稠油起到了良好的降黏效果。现场试验结果表明,Y-3井在蒸汽吞吐开采过程中注入新型油溶性稠油降黏剂SRE-1后,有效生产时间明显延长,日产油量明显提高,取得了良好的生产效果。A new oil soluble viscosity reducer SER-1 was synthesized by solution polymerization from octadecyl methacrylate,acrylamide derivatives and styrene.The effects of monomer ratio,reaction temperature,reaction time and initiator dosage on viscosity reduction were investigated.The results showed that the optimum synthesis condition of viscosity reducer SER-1 was that the molar ratio of octadecyl methacrylate,acrylamide derivative and styrene was 9∶2∶3,the reaction temperature was 70℃,the reaction time was 5 hour,and the amount of initiator was 1.5%.When the dosage of viscosity reducer SER-1 is 1500mg/L,the net viscosity reduction rate of heavy oil can reach 64.38%;when the viscosity reducer SER-1 is added to heavy oil,the content of gum and asphaltene is obviously reduced,and the content of saturated hydrocarbon and aromatic hydrocarbon is obviously increased,which shows that the new oil soluble viscosity reducer SER-1 has a good viscosity reduction effect on heavy oil.The field test results show that the effective production time and daily oil production of well Y-3 are significantly prolonged and good production results are achieved after the injection of a new oil soluble viscosity reducer SRE-1 in the process of steam stimulation.

关 键 词：稠油 油溶性降黏剂 降黏率 性能评价 现场应用 

分 类 号：TE39[石油与天然气工程—油气田开发工程]