新疆石油地质

›› 2019, Vol. 40 ›› Issue (5): 1-1.doi: 10.7657/XJPG20190514

• 论文 •    

聚合物微球加效体系性能及驱油效果

任豪1，张作伟2，王健3，关丹1，阙庭丽1，余恒4   

  1. (1.中国石油 新疆油田分公司 实验检测研究院,新疆 克拉玛依 834000;2.中海油能源发展股份有限公司 工程技术分公司,天津 300452;3.西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500;4.中国石油 西南油气田分公司 重庆气矿,重庆 404100)
  • 出版日期:2019-10-01 发布日期:1905-07-19

Performance and Oil Displacement Effect of Polymer Microsphere Additive System

REN Hao1, ZHANG Zuowei2, WANG Jian3, GUAN Dan1, QUE Tingli1, YU Heng4   

  1. (1.Research Institute of Experiment and Detection, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China; 2.EnerTech Drilling & Production Co., CNOOC Energy Technology & Services Limited, Tianjin 300452, China; 3.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 4.Chongqing Branch, Southwest Oil and Gasfield Company, PetroChina, Chongqing 404100, China)
  • Online:2019-10-01 Published:1905-07-19

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摘要： 为改善蒲北油田蒲125区块水驱和聚合物驱效果，提出采用聚合物微球加效体系调驱技术进行开发。在模拟油藏条件下，对加效体系性能进行评价，并分析其微观结构，研究其驱油效果。结果表明，在油藏条件下聚合物微球加效体系的黏度为114.3 mPa·s，具有良好的温度适应性、矿化度适应性和长期稳定性，其抗剪切性能优于聚合物溶液；加效体系微观结构是微球分散吸附在聚合物网状结构的支链上，既提高聚合物的黏度，又增强微球的分散性；加效体系提高采收率效果优于聚合物，注入加效体系后，高低渗层的分流率约为50%，较单一聚合物驱，加效体系调驱能更好地改善高含水油藏的开发效果，提高油藏采收率。

Abstract: In order to improve the effects of waterflooding and polymer flooding in Pu125 block of Pubei oilfield, it is proposed to use polymer microsphere additive system to improve the technology. Under the simulated reservoir conditions, the performance of the additive system was evaluated, and its microstructure was analyzed to study its oil displacement effect. The experimental results show that the polymer microsphere additive system under the reservoir condition has a viscosity of 114.3 mPa·s, which has good temperature adaptability, mineralization adaptability and long-term stability. Its shear resistance is better than that of polymer solution; the microstructure of the additive system is that the microspheres are dispersed and adsorbed on the branches of the polymer network structure, which not only improves the viscosity of the polymer, but also enhances the dispersion of the microspheres; the efficiency of the additive system is better than that of polymer system. After the injection of the additive system, the distributing rates of the high and low permeability layers are about 50%, respectively. Compared with polymer-only flooding, the additive system can better improve the development effect and the recovery factor of high watercut reservoirs

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