岩性油气藏 ›› 2016, Vol. 28 ›› Issue (4): 101–105.doi: 10.3969/j.issn.1673-8926.2016.04.014

• 油气田开发 • 上一篇    下一篇

聚合物与葡北油田储层孔隙结构适应性研究

张继红,郭鑫   

  1. (东北石油大学提高采收率国家重点实验室,黑龙江大庆163318)
  • 出版日期:2016-07-20 发布日期:2016-07-20
  • 作者简介:张继红(1969-),女,博士,教授,主要从事提高油气采收率理论与技术方面的教学和科研工作。地址:(163318)黑龙江省大庆市高新技术开发区发展路199 号东北石油大学研究生院。E-mail:guoxin00001@163.com。
  • 基金资助:

    黑龙江省自然科学基金项目“葡北油田深部逐级调驱技术机理研究”(编号:E201213)资助

Adaptability of polymer to reservoir pore structure in Pubei Oilfield

Zhang Jihong,Guo Xin   

  1. (Key Laboratory of Enhance Oil and Gas Recovery of Education Ministry,Northeast Petroleum University,Daqing 163318,Heilongjiang,China)
  • Online:2016-07-20 Published:2016-07-20

摘要:

为寻求一种适合松辽盆地葡北油田采收率的聚合物溶液驱油方法,对葡北油田葡A1 井区一检查井的岩心进行压汞实验,认为该油田属于典型低渗透油藏。因此,通过测量普通中分聚合物和抗盐聚合物流体力学直径,从微观角度考察了2 种聚合物在不同配制条件下对该井区储层孔隙结构的适应性,同时利用柱状岩心进行了驱油效率对比实验。结果表明:注入浓度为700 mg/L 的抗盐聚合物溶液驱油比注入浓度为1 200 mg/L 的普通中分聚合物溶液驱油采收率提高了3.22%,相对于普通中分聚合物溶液,抗盐聚合物更适应于葡北油田的聚驱应用。

关键词: 页岩含气性, 不整合面, 排烃作用, 有机孔, 五峰组-龙马溪组, 筇竹寺组, 四川盆地及其周缘

Abstract:

In order to seek a polymer solution flooding method suitable for oil recovery in Pubei Oilfield of Songliao Basin, a mercury injection experiment with cores from A1 well field in Pubei Oilfield was carried out. Pubei Oilfield belongs to typical low permeability reservoir. By measuring the hydrodynamic diameter of common polyacrylamide polymer and salt?resistant polymer, this paper investigated the adaptability of two kinds of polymers to the reservoir pore strucutre under different preparation conditions from the microscopic aspect, and compared the displacement efficiency by cylindrical cores. The experiment result shows that the oil recovery enhanced by 700 mg/L of salt-resistant polymer is 3.22% higher than that by 1 200 mg/L of common polymer. It is proved that salt?resistant polymer is more suitable for the flooding in Pubei Oilfield.

Key words: shale gas-bearing property, unconformable surface, hydrocarbon expulsion, organic pores, Wufeng-Longmaxi Formation, Qiongzhushi Formation, Sichuan Basin and surrounfing area

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