Journal of Petrochemical Universities

Journal of Petrochemical Universities

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Study and Application of Water & Polymer Simultaneous Stratified Injection Process in Single Well

Wu Zhibin   

  1. (No.5 Oil Production Plant of Daqing Oilfield Ltd.,Daqing Heilongjiang 163513,China)
  • Received:2018-01-06 Revised:2018-01-30 Online:2018-06-25 Published:2018-07-11

单井分层同时注水和聚合物工艺的研究与应用

吴志彬   

  1. (大庆油田有限责任公司 第五采油厂,黑龙江 大庆 163513)
  • 作者简介:吴志彬(1980-),男,工程师,从事油田开发研究;E-mail:zhzhjian@petrochina.com.cn。

Abstract: The development of polymer flooding injection wells in X oilfield is based on the development method of up fill-up, which has many problems, such as the large amount of up-filled plugging works, and the subsequent contribution of water drive zones to production. Therefore, the study on the process of stratified injection technology for water & polymer in the same well is carried out. Through the design of the tube column in the upper layer of the injection well and the lower layer general water injection process, four key technologies involving large diameter washable well packer, polymer injection sliding sleeve switch, plugging sealing section and special connecting collar are studied. The water and the polymer are injected at the same time in the single well. The laboratory test and field test of the tool have obtained good experimental results. This technology provides technical support for the development of the up-fill stimulation on the polymer flooding blocks.

Key words: Polymer flooding, Up-fill, Plugging, Water injection, Polymer injection

摘要: X油田聚驱注入井目前采用逐层上返的开发方式,这种方式存在上返封堵工作量大,降低后续水驱层位对产量的贡献等问题。因此,开展了水聚同井分层同注工艺技术研究。通过对注入井上层笼统注聚和下层笼统注水工艺管柱设计,对大通径可洗井封隔器、注聚滑套开关设计、插接密封段设计和专用连接接箍设计进行关键技术的研究,实现了水和聚合物两种物质在单井的同时注入。室内实验和现场试验取得了良好的实验效果,该工艺为聚驱上返措施的开展提供了技术支持。

关键词: 聚驱, 上返, 封堵, 注水, 注聚