Journal of Petrochemical Universities ›› 2026, Vol. 39 ›› Issue (2): 57-64.DOI: 10.12422/j.issn.1006-396X.2026.02.007

• Oilfield Chemistry • Previous Articles     Next Articles

Study on the Influence of Layer⁃Series Combination on Oil Displacement Efficiency of Polymer Flooding and Polymer/Surfactant Binary Flooding

Wenjing HUANG1(), Jinxiang LIU1(), Jiaxin CHENG1, Weijia CAO1, Xiaoyan WANG2, Wei WANG2, Longchao Cui1, Yuqing WANG1, Xinzhi MENG1   

  1. 1.Key Laboratory of Enhanced Oil Recovery of Education Ministry,Northeast Petroleum University,Daqing Heilongjiang 163318,China
    2.Rresearch institute of Oil Production Technology of Petrochina Dagang Oilfield Company,Tianjin 300280,China
  • Received:2025-05-19 Revised:2025-07-06 Published:2026-04-25 Online:2026-04-21
  • Contact: Jinxiang LIU

层系组合对聚合物驱和聚/表二元驱驱油效果的影响研究

黄文静1(), 刘进祥1(), 成佳欣1, 曹伟佳1, 王晓燕2, 王伟2, 崔龙超1, 王玉卿1, 孟鑫郅1   

  1. 1.东北石油大学 提高油气采收率教育部重点实验室,黑龙江 大庆 163318
    2.中国石油大港油田 采油工艺研究院,天津 300280
  • 通讯作者: 刘进祥
  • 作者简介:黄文静(2002-),女,硕士研究生,从事提高采收率原理与技术方面的研究;E⁃mail:2842046934@qq.com
  • 基金资助:
    国家自然科学基金项目(51574086)

Abstract:

In view of the characteristics of high salinity of injected water,high reservoir temperature and multiple reservoir layers in Block G of Dagang K Oilfield,experiments were conducted to screen temperature⁃resistant and salt⁃tolerant polymers and surfactants.On this basis,the oil displacement efficiency of polymer solutions and polymer⁃surfactant binary composite flooding systems(hereinafter referred to as polymer/surfactant binary flooding systems) was investigated using multi‐layer core models.The results show that among the three types of polymers,hydrophobically associating polymers exhibit superior viscosity enhancement. Compared with HSY and DWS,the polymer/surfactant binary flooding system formulated with DG‐1 surfactant can reduce the interfacial tension to 10⁻³ mN/m.Under the same model layer combination,the incremental oil recovery of the polymer/surfactant binary flooding system is higher than that of the polymer solution;in particular,the incremental oil recovery of the binary flooding system is 1.43% higher in the three‐layer model with a permeability ratio of 10. Under the same flooding agent condition,the mass fraction and viscosity of polymer and surfactant in the produced fluid increase with the increase of model permeability ratio.At the same permeability ratio,a larger number of model layers leads to higher waterflooding recovery,lower chemical flooding and subsequent waterflooding recovery,while the ultimate oil recovery is similar.

Key words: High temperature and salt reservoir, Intra?layer heterogeneity, Polymer?surfactant binary system, Physical simulation, Layer series combination

摘要:

针对大港K油田G断块注入水矿化度高、油藏温度高、油藏层数较多等特征,进行了耐温抗盐聚合物和表面活性剂优选实验,并在此基础上开展了聚合物溶液和聚合物⁃表面活性剂二元复合驱油体系(简称聚/表二元驱油体系)在层内多层系岩心模型上的驱油效果研究。结果表明,三种不同类型的聚合物中,疏水缔合聚合物具有较好的增黏效果,与HSY、DWS相比,用DG⁃1表面活性剂配制的聚/表二元驱油体系界面张力可降至10-3 mN/m;模型层系组合相同的条件下,聚/表二元驱油体系采收率增幅大于聚合物溶液,其中,渗透率级差为10的三层模型上,聚/表二元驱油采收率增幅提高1.43个百分点;在驱油剂相同的条件下,随模型渗透率级差增加,采出液中聚合物和表面活性剂的质量分数和黏度升高;当渗透率级差相同时,模型层系越多,水驱采收率越高,化学驱和后续水驱采收率越小,最终采收率接近。

关键词: 高温高盐油藏, 层内非均质, 聚/表二元驱油体系, 物理模拟, 层系组合

CLC Number: 

Cite this article

Wenjing HUANG, Jinxiang LIU, Jiaxin CHENG, Weijia CAO, Xiaoyan WANG, Wei WANG, Longchao Cui, Yuqing WANG, Xinzhi MENG. Study on the Influence of Layer⁃Series Combination on Oil Displacement Efficiency of Polymer Flooding and Polymer/Surfactant Binary Flooding[J]. Journal of Petrochemical Universities, 2026, 39(2): 57-64.

黄文静, 刘进祥, 成佳欣, 曹伟佳, 王晓燕, 王伟, 崔龙超, 王玉卿, 孟鑫郅. 层系组合对聚合物驱和聚/表二元驱驱油效果的影响研究[J]. 石油化工高等学校学报, 2026, 39(2): 57-64.