多功能稠油破乳解堵剂的研究与应用  

Research and application of multifunctional heavy oil demulsifying plug removal agent

作　　者：苏杰 苏毅 蔡俊 王少华[2] 宋宏志[2] 汪成[2] 冯宇 SU Jie;SU Yi;CAI Jun;WANG Shaohua;SONG Hongzhi;WANG Cheng;FENG Yu(CNOOC Oilfield Services(China)Company Limited,Tianjin Branch,Tianjin 300459,China;COSL Oilfield Production Research Institute,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海油田服务股份有限公司油田生产研究院,天津300459

出　　处：《能源化工》2024年第2期55-59,共5页Energy Chemical Industry

基　　金：中海石油(中国)有限公司科技攻关项目,渤海典型稠油油藏热采提高采收率及关键工艺技术研究(YXKY-2021-TJ-01);天津市科技领军企业认定及重大项目,海上中深层特稠油热采关键技术研究及应用(20YDLZCG00190)。

摘　　要：针对稠油开采过程中,沥青质在井筒及近井地带沉积和稠油乳化堵塞等导致油井产量低的问题,合成了5种不同PO/EO比例的双酚A酚胺二嵌段聚醚,并优选出破乳效果最好的DE-02,通过将破乳剂DE-02与优选出的溶剂TC-03进行复配,得到多功能稠油破乳解堵剂。对该体系进行了室内评价和现场试验,研究结果表明,多功能稠油破乳解堵剂溶解沥青质速率为5.7 mg/(mL·min),溶解石蜡速率为5.5 mg/(mL·min),在30 min时破乳率达到80%。该试剂在渤海某稠油井使用后,使该井产油量较措施前提高2倍,取得了较好的现场应用效果。In response to the problem of low oil well production caused by the deposition of asphaltene in the wellbore and near wellbore areas,as well as emulsification and blockage of heavy oil during heavy oil extraction.Five different PO/EO ratios of bisphenol A phenolamine diblock polyethers are synthesized,and the best demulsifier DE-02 is selected.By compounding the demulsifier DE-02 with the selected solvent TC-03,a multifunctional heavy oil demulsifier is obtained.Indoor evaluation and on-site experiments are conducted on the system,and the research results show that the multifunctional heavy oil demulsifying plug removal agent has a dissolution rate of 5.7 mg/(mL·min)for asphaltene and 5.5 mg/(mL·min)for paraffin.The demulsification rate can reach 80%at 30 min.After using this reagent in a viscous oil well in Bohai Sea,the oil production of the well increases by 2 times compared to before the measures are taken,and good application results are achieved.

关 键 词：稠油 有机堵塞 乳化堵塞 破乳 溶解有机质 

分 类 号：TE39[石油与天然气工程—油气田开发工程]