石油与天然气地质 ›› 2005, Vol. 26 ›› Issue (3): 370-373.doi: 10.11743/ogg20050318

• 论文 • 上一篇    下一篇

改善稠油渗流流变性的试验

王步娥, 郑惠光   

  1. 中国石化石油勘探开发研究院 北京 100083
  • 收稿日期:2005-05-09 出版日期:2005-06-25 发布日期:2012-01-16
  • 基金资助:

    中国石油化工集团公司油田开发先导试验项目(YTB1999)

Experimental study of improving rheological characteristics of heavy oil's percolation flow

Wang Bu'e, Zheng Huiguang   

  1. Exploration and Production Research Institute, SINOPEC, Beijing
  • Received:2005-05-09 Online:2005-06-25 Published:2012-01-16

摘要:

稠油的非牛顿性质是造成稠油油藏采油速度低、采收率低的一个重要原因。ZHSS-01表面活性剂体系能在较宽的温度范围(30~71℃)、较高的矿化度(16×104 mg/L)和较高硬度(1.1×104 mg/L)条件下,与稠油形成水包油型乳状液,降粘效率达98%以上,有效地改善了稠油在井周地带的渗流流变性,降低了稠油在近井地带的渗流阻力,提高开采速度。试验表明,应用 ZHSS-01表面活性剂进行驱油可提高采收率3%以上。

关键词: 渗流力学, 流变性, 表面活性剂, 稠油

Abstract:

Non-Newtonian flow characteristic of heavy oil is the main reason resulting in low oil recovery rate and low recovery factor in heavy oil reservoir.ZHSS-01 surfactant system can form reverse emulsion when it is mixed with heavy oil in the reservoir in a relatively wide range of temperature(30-71℃),relatively high salinity(16×104 mg/ L)and relatively high hardness of water (1.1×104 mg/L),which would lead to a viscosity breaking effectiveness of over 98%.As a result,the rheological characteristics of percolation flow of heavy oil around the wellbore can be improved,fihrational resistance of heavy oil in the vicinity of the wellbore is lowered,and oil production rate is increased.Experimental study shows that recovery factor can be enhanced over 3 % when heavy oil being displaced with ZHSS-01 surfactant system.

Key words: mechanics of percolation flow through porous media, rheological characteristics, surfactant, heavy oil

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