Ca2+ 和Mg2+ 对聚/表二元体系性能影响研究#br# ———以大港孔南高盐高温高凝油藏为例

doi:10.3969/j.issn.1006-396X.2016.02.014

石油化工高等学校学报 ›› 2016, Vol. 29 ›› Issue (2): 71-75.DOI: 10.3969/j.issn.1006-396X.2016.02.014

Ca2+ 和Mg2+ 对聚/表二元体系性能影响研究#br# ———以大港孔南高盐高温高凝油藏为例

苏鑫1,卢祥国1,曹伟佳1,杨怀军2,张杰2

(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.中国石油大港油田公司采油工艺研究院,天津300280)

修回日期:2015-12-20 出版日期:2016-04-25 发布日期:2016-05-06
通讯作者: 卢祥国(1960-),男,博士,教授,博士生导师,主要从事提高采收率原理与技术相关研究;E-mail:luxiangg2003@ aliyun.com。
作者简介:苏鑫(1991-),男,硕士研究生,从事提高采收率技术研究;E-mail:suxin14@126.com。
基金资助:
中国石油大港油田“孔南地区高凝高粘油藏化学复合驱最佳流度界定实验研究”基金资助(DGYT-2014-JS-306)

The Effect of Ca2+ and Mg2+ on Polymer/Surfactant Binary Combination: Taking the Reservoirs of Kongnan Block in Dagang Oilfield as an Example

Su Xin1, Lu Xiangguo1, Cao Weijia1, Yang Huaijun2, Zhang Jie2

(1.Key Laboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing Heilongjiang 163318，China;

2.Oil Production Technology Research Institute of Dagang Oilfield Company, CNPC, Tianjin 300280，China)

Revised:2015-12-20 Published:2016-04-25 Online:2016-05-06

摘要/Abstract

摘要： 近年来,随着石油消费量增加和新增探明储量减少,石油公司开始重视非常规油藏开发工作。大港油田孔南地区属于高温高盐高凝油藏。为提高无碱聚/表二元复合驱增油降水效果,以大港孔南地区储层地质和流体为模拟对象,开展了溶剂水处理方式对聚/表二元体系性能影响研究。结果表明,消除注入水中Ca2+ 和Mg2+ 可以增加疏水缔合聚合物缔合程度,增大聚合物溶液和聚/表二元体系黏度和滞留量,进而增强液流转向效果。在疏水缔合聚合物溶液中加入成垢剂后,不仅可以消除钙镁离子,而且还能够形成微小垢颗粒,它们由聚合物溶液携带集中进入岩石孔隙,进一步增强了疏水缔合聚合物溶液和聚/表二元体系液流转向能力。与注入水和除垢水相比,含垢水配制聚/表二元体系液流转向能力较强,采收率增幅较大。

关键词: 高盐高凝油藏, 聚/表二元体系, 水处理方法, 性能特征, 实验评价

Abstract: In recent years, more attention was paid to unconventional reservoir development due to the increase in oil consumption and the reduction of new proved reserves. The reservoirs of Kongnan Block in Dagang Oilfield belong to the high temperature, high salinity and hypercoagulable reservoirs. In order to improve the effect of polymer/surfactant binary combination flooding, the effect of solvent water treatment on polymer/surfactant binary combination based on Kongnan Block of Dagang Oilfield reservoir geological characteristics and fluid properties was studied. The results show that, elimination of the Ca2+ and Mg2+ in the injected water can enhance the association of hydrophobic associated polymer and improve the viscosity and flow turning ability of polymer/surfactant binary combination. After adding into the polymer/surfactant binary combination, not only can eliminate the adverse effect of Ca2+ and Mg2+ on the salt resistance of hydrophobic associated polymer, but also can form a large number of particles which can further enhance flow turning ability by entering reservoir porosity. Compared with injected water and softened water, the flow turning ability and recovery of the polymer/surfactant binary combination which is configured by softened water with particles are better.

Key words:

Experimental

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苏鑫,卢祥国,曹伟佳,杨怀军,张杰. Ca2+ 和Mg2+ 对聚/表二元体系性能影响研究#br# ———以大港孔南高盐高温高凝油藏为例[J]. 石油化工高等学校学报, 2016, 29(2): 71-75.

Su Xin, Lu Xiangguo, Cao Weijia, Yang Huaijun, Zhang Jie.

The Effect of Ca2+ and Mg2+ on Polymer/Surfactant Binary Combination: Taking the Reservoirs of Kongnan Block in Dagang Oilfield as an Example

[J]. Journal of Petrochemical Universities, 2016, 29(2): 71-75.

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Ca2+ 和Mg2+ 对聚/表二元体系性能影响研究#br# ———以大港孔南高盐高温高凝油藏为例

The Effect of Ca2+ and Mg2+ on Polymer/Surfactant Binary Combination: Taking the Reservoirs of Kongnan Block in Dagang Oilfield as an Example

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