西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 109-114.

• 石油与天然气工程 • 上一篇    下一篇

苏丹P 油田注水时机实验及数值模拟研究

王黎1,2 饶良玉2 李薇2 李捷2
  

  1. 1. 中国地质大学(北京)能源学院,北京海淀100083;
    2. 中国石油勘探开发研究院,北京海淀100083
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20

Experimental Study and Numerical Simulation on P Oilfield in the Process of Water Injection

WANG Li 1,2 RAO Liang-yu 2 LI Wei 2 LI Jie 2
  

  1. 1. School of Engineer Resources, China University of Geology, Haidian, Beijing 100083, China;
    2. Research Institute of Petroleum Exploration and Development, CNPC, Haidian, Beijing 100083, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要: 针对大型高凝油藏地层能量变弱、含水上升快、产量递减迅速等问题,结合海外油田高产稳产及高凝固点、高含蜡和高地饱压差等特点,建立了实际地层高温高压物理模拟实验系统,采用不同渗透率的岩芯,模拟不同驱替压力对开发效果的影响,得出最佳注水时机是脱出气体尚未形成连续相之前。采用数值模拟技术优化转注时机和采油速度,提出在合理利用天然能量的前提下,地层压力下降到3.4 MPa 为最佳的注水时机,合理的采油速度是2.2%。注采井组试验结果表明:适时注水可较好地保持地层能量,提高产液量,改善开发效果。

关键词:

高凝油藏, 注水时机, 长岩芯实验, 数值模拟, 高地饱压差

Abstract: To solve the problems of the decrease of reservoir energy, the fast rise of water-cut and the rapid decrease of production in the huge high pour-point oil reservoir, according to the characteristics of high, stable yields, high

pour-point, high wax content, and high pressure differential between static and saturation pressure overseas oilfields, a high temperature and high pressure physical simulation experimental system is established. We simulate the effect
of different core flooding pressure on development performance under the in-situ situation, and the results show that the optimized water flooding timing is before dissolved gas form the connectivity face. Utilizing the numerical simulation technology under the condition of making full use of natural energy, when the reservoir pressure decreases to 3.4 MPa, the water flooding timing is the best, and the optimized production rate is 2.2%. The results of the pilot test show that the good water injection timing can maintain the reservoir energy, increase liquid production and improve development performance.

Key words:

high pour-point oil reservo, water flooding timing, long core experiment, numerical simulation, high pressure differential between static and satu

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