石油化工高等学校学报

石油化工高等学校学报 ›› 2021, Vol. 34 ›› Issue (3): 52-57.DOI: 10.3969/j.issn.1006-396X.2021.03.009

• 石油工程 • 上一篇    下一篇

高盐油藏无机凝胶与泡沫复合调驱研究

何欣1卢祥国1曹伟佳1陈超2徐浩2张立东2   

  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. 中国石油吐哈油田分公司 采油工程院,新疆 哈密 838200
  • 收稿日期:2019-12-27 修回日期:2019-07-12 出版日期:2021-06-30 发布日期:2021-07-19
  • 通讯作者: 卢祥国(1960-),男,博士,教授,博士生导师,从事提高采收率方面研究;E-mail:3347622811@qq.com。
  • 作者简介:何欣(1995-),女,硕士研究生,从事提高采收率方面研究;E-mail:2517490697@qq.com。
  • 基金资助:
    国家自然科学基金项目资助(51574086)。

Compatibility of Inorganic Gel and Surfactant in High⁃Salt Reservoir

He Xin1Lu Xiangguo1Cao Weijia1Chen Chao2Xu Hao2Zhang Lidong2   

  1. 1.Key Laboratory of Enhanced Oil and Gas Recovery, Ministry of Education, Northeast Petroleum University, Daqing Heilongjiang 163318, China;2. Oil Production Engineering Institute, PetroChina Tuha Oilfield Company, Hami Xinjiang 838200, China
  • Received:2019-12-27 Revised:2019-07-12 Online:2021-06-30 Published:2021-07-19

摘要: 吐哈雁木西油藏具有岩石胶结度较低、储层非均质性强和注入水矿化度高等特点,长期注水开发已经形成了优势通道,现有技术难以满足深部液流转向。以目标油藏储层地质特征和流体特性等为模拟对象,开展了无机凝胶与表面活性剂适应性研究。结果表明,非离子表面活性剂(DWS)溶液具有良好抗盐性。无机凝胶(硅酸钙或硅酸镁)对DWS溶液影响不大,表明实施交替注入调驱的驱油效果不会受到太大影响。当表面活性剂与原油发生乳化作用时,“贾敏效应”可以产生附加渗流阻力和液流转向效果,因而采收率呈现较大幅度升高。在三种无机凝胶与表面活性剂和氮气组合方式中,“无机凝胶+表面活性剂溶液+气”交替注入方式注入压力较高,液流转向和扩大波及体积效果较好,因而采收率增幅较大。

关键词: 高盐油藏, 无机凝胶, 表面活性剂, 配伍性, 实验研究, 机理分析

Abstract: Yanmuxi reservoir in Tuha shows low rock cementation, strong reservoir heterogeneity and high salinity of injected water.Long term water injection development has formed an advantage channel, and the existing technology is difficult to meet the technical requirements of deep liquid flow diversion.The compatibility of inorganic gel and surfactant was studied based on the reservoir geological and fluid characteristics of the target reservoir.The results showed that nonionic surfactant (DWS) solution had good salt resistance property.Inorganic gel (calcium silicate or magnesium silicate) has little effect on DWS solution,indicating that the displacement effect during alternate injection process and profile control will not be affected too much.When surfactant emulsifies with crude oil,"Jiamin effect" can produce additional seepage resistance and liquid flow diversion effect,so the recovery rate increases greatly.In the three combinations of inorganic gels,surfactants and nitrogen,the "inorganic gel+surfactant solution+gas" alternate injection mode exhibits higher injection pressure, and superior liquid flow diverting and expanding the volume effect.

Key words: High salinity reservoir, Inorganic gel, Surfactant; Compatibility, Experimental study, Mechanism analysis

引用本文

何欣, 卢祥国, 曹伟佳, 陈超, 徐浩, 张立东. 高盐油藏无机凝胶与泡沫复合调驱研究[J]. 石油化工高等学校学报, 2021, 34(3): 52-57.

He Xin, Lu Xiangguo, Cao Weijia, Chen Chao, Xu Hao, Zhang Lidong. Compatibility of Inorganic Gel and Surfactant in High⁃Salt Reservoir[J]. Journal of Petrochemical Universities, 2021, 34(3): 52-57.

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