摘要
针对叙利亚低渗碳酸盐岩稠油油藏前期蒸汽吞吐中存在的注汽压力高、注汽效果差、原油黏度高、开采效率低等问题,采用石油磺酸盐、α烯烃磺酸盐、聚氧乙烯醚、希夫碱为原料复配了一种热采辅助驱油剂XLYO-1。室内测试结果表明,该驱油剂是一种优良的多功能驱油剂,在经过300℃高温处理之后,界面张力达到10-2 mN/m,在驱油剂质量分数较低情况下对叙利亚高含硫原油降黏率在90%以上,并体现出良好的润湿反转性能,将亲油储层转变为亲水储层。在室内蒸汽驱替实验中,该驱油剂降低了注汽压力,延缓了蒸汽突破时间,最终提高了驱替效率。
According to high steam injection pressure, poor steam m3ectlon ettec~, mgu u ; production efficient in steam huff-and-puff on Syria Oudeh carbonate reservoir, we develop a new oil driver system named XLYO-1 which consists of petroleum sulfonate, alpha olefin sulfonates, polyoxyethylene e- ther and schiff base. The testing results show that the oil driver has multiple functions. The interface ten- sion of oil driver can reach 10 2 mN ~ m 1 after it is disposed at 300 ~C, and the oil viscosity reduction can get above 90% at very low concentration of oil driver. Meanwhile, oil driver can achieve wettability rever- sal, and change the oil wet formation to the water wet formation. These multiple functions can reduce the steam injection pressure, and delay the steam breakthrough, and finally improve the displacement efficien- cy.
出处
《地质科技情报》
CAS
CSCD
北大核心
2015年第4期165-169,共5页
Geological Science and Technology Information
基金
中国石化科技部项目(G5800-12-ZS-KJB0155)
关键词
碳酸盐岩
稠油油藏
热采辅助驱油剂
润湿反转
驱替效率
carbonate
heavy oil reservoir
thermal oil driver
wettability reversal
displacement efficient
