西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (3): 44-46.DOI: 10.3863/j.issn.1000-2634.2001.01.013

• 石油工程 • 上一篇    下一篇

适合红岗油田萨尔图油层的三元复合体系研究

洪玲1 张忠林1 董宪红1 王淑英2   

  1. 1.吉林油田分公司勘探开发研究院,吉林 松原
  • 收稿日期:2000-11-20 修回日期:1900-01-01 出版日期:2001-08-20 发布日期:2001-08-20
  • 通讯作者: 洪玲

RESEARCH ON OIL DISPLACEMENT FORMULA OF THREE-COMPONENT COMPOUND SYSTEM IN HONGGANG OILFIELD SAERTU RESERVOIR

HONG Ling1 ZHANG Zhong-lin1 DONG Xian-hong1 et al

  

  1. Exploration and Development Research Institute of Jilin Oilfield, Songyuan Jilin 138001,China
  • Received:2000-11-20 Revised:1900-01-01 Online:2001-08-20 Published:2001-08-20
  • Contact: HONG Ling

摘要:

红岗油田已进入高含水开发阶段,依靠常规方法提高采收率的难度越来越大,利用碱表面活性剂聚合物组成的三元复合体系可与原油产生超低界面张力,又具有较高粘度,既提高驱油效率又能提高波及体积,从而提高采收率。根据红岗油田萨尔图油层特征,采用正交试验设计方法筛选出了一种三元复合驱油体系,该体系与红岗油田萨尔图油层原油形成的界面张力可达到10-3 mN/m,该体系为1.5%A+0.06%S+0.2%P+0.2%N;其主要指标为界面张力(3~7)×10-3 mN/m,粘度μ>20 mPa·s。另外,通过室内岩心流动实验证实:室内天然岩芯驱油效率比水驱采收率提高10%左右。

关键词: 聚合物, 表面活性剂, 驱油效率, 界面张力, 提高采收率

Abstract: It is getting more and more difficult to enhance oil recovery by conventional methods because of the high-water-cut development in Honggang oilfield. Three-component compound system that consists of alkali, surfactant and polymer can reach the ultralow interfacial tension with oil as well high viscosity. It can both increase the oil displacement efficiency and improve the
swept volume so that the ultimate recovery is increased. According to the reservoir features in Honggang oil field Saertu reservoir, the oil displacement formula of the system is screened by using quadrature test design method. The determined formula is 1.5%A+0.06%S+0.2%P+0.2%N. Main indexes
of the system: the interfacial tension is (3-7)×10-3 mN/m,the viscosity is more than 20 mPa.s, the oil displacement efficiency by natural test core increase more than 10% water flooding recovery.

Key words: polymer, surfactant, oil displacement, interfacial tension, enhanced oil recovery

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