油砂采出液多分支耐高温破乳剂的合成及性能评价  

Synthesis and Performance Evaluation of Multibranched High Temperature Resistant Demulsifier for Oilsand Emulsion Treatment

作　　者：曾璐明 ZENG Luming(CNOOC Ener-Tech Oilfield Chemical Co.,Ltd,Tianjin 300451,P R of China)

机构地区：[1]中海油(天津)油田化工有限公司,天津300451

出　　处：《油田化学》2020年第3期495-498,共4页Oilfield Chemistry

基　　金：中国海洋石油总公司科技项目“油砂采出液处理成套药剂开发与应用研究”(项目编号CNOOC-KJ135ZDXM35TJY001-2018)。

摘　　要：为提高油砂采出液破乳剂的耐高温性能和脱水速率,先以6,6-异亚丙基双萘酚、乙二胺和甲醛为原料合成了具有双萘酚结构的酚胺树脂,再以此酚胺树脂为起始剂、氢氧化钾为催化剂、与环氧丙烷及环氧乙烷嵌段聚合反应合成多分支耐高温破乳剂。采用热重分析和羟值测定分析该破乳剂耐高温性能,通过高温脱水实验考察其脱水性能。研究表明,合成破乳剂的耐温性良好,在350℃以下质量损失不明显,且在100数300℃温度范围内羟值含量稳定,适合在油砂采出液的高温环境应用。针对加拿大阿尔伯塔省某油田油砂采出液,在130℃,药剂浓度为400 mg/L的情况下8 h的脱水率达到90%,脱水速率高于现场在用破乳剂,具有较好的破乳脱水性能。In order to improve high temperature resistance and dehydration performance of demulsifier for oilsand emulsion treatment,phenol-amine resin containing dinaphthol structure was synthesized using 6,6-isopropylidenebisnaphthol,ethanediamine and methanol as the raw materials.Then multibranched high temperature resistant demulsifier was further synthesized using the phenol-amine resin as the initiator,KOH as the catalyst,through addition reaction with epoxyethane and epoxypropane respectively.High temperature resistance was studied by thermogravimetric analysis and hydroxyl value,dehydration performance was evaluated by high-temperature dehydration bottle tests.The results showed that the demulsifier had good temperature resistance with little mass loss below 350℃and the stable hydroxyl value when temperature was at the range of 100—300℃,indicating that the demulsifier could be used to treat oilsand emulsion in the high temperature environment.For the oilsand emulsion from oilfield in Alberta,Canada,the dehydration rate reached up to 90%within 8 hours at the demulsifier dosage of 400 mg/L and at the temperature of 130℃,which was higher than that of the incumbent demulsifier.The obtained demusifier have excellent demulsification and dehydration performance for the oilsand emulsion.

关 键 词：油砂采出液 耐高温破乳剂 多分支 双萘酚 酚胺树脂 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TE868