石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (2): 302-306.doi: 10.11743/ogg20120217

• 油气开发 • 上一篇    下一篇

普通稠油油藏渗流特征实验研究——以新疆油田九4区齐古组油藏为例

王子强1, 张代燕2, 杨军3, 寇根1, 杨飞4   

  1. 1. 中国石油 新疆油田公司 实验检测研究院, 新疆 克拉玛依 834000;
    2. 西南石油大学 石油工程学院, 四川 成都 610500;
    3. 中国石油 新疆油田公司 风城油田作业区, 新疆 克拉玛依 834000;
    4. 中法渤海地质服务有限公司, 天津 300452
  • 收稿日期:2011-12-10 修回日期:2012-03-14 出版日期:2012-04-28 发布日期:2012-05-24

Experimentals study on percolation characteristics of ordinary heavy oil reservoirs:a case study from the Qigu Formation reservoir in Nine-4 Block of Xinjiang oilfield

Wang Ziqiang1, Zhang Daiyan2, Yang Jun3, Kou Gen1, Yang Fei4   

  1. 1. Research Institute of Experiment and Detection, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
    2. Faculty of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    3. Fengcheng Oilfield Area, Petrochina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
    4. China-France Bohai Geoservices Co., Ltd, Tianjin 300452, China
  • Received:2011-12-10 Revised:2012-03-14 Online:2012-04-28 Published:2012-05-24

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摘要：

稠油油藏原油粘度高,流体渗流不符合达西定律,其流动时存在启动压力。根据稠油油藏渗流特点,设计了合理确定稠油启动压力的实验测试方法。通过对新疆油田稠油油藏不同原油粘度、不同渗透率、不同温度条件下天然岩心的渗流实验,研究了束缚水饱和度下油相启动压力梯度及流速-压差关系,并对实验数据进行回归,得到了启动压力梯度、流速-压差曲线参数与岩石气测渗透率、流体粘度关系的经验公式。实验结果表明,利用该测试方法能快速、准确地测定稠油油藏的启动压力。原油粘度对稠油启动压力梯度的影响大于储集层物性的影响。稠油启动压力梯度及描述流速-压差曲线的参数和岩石气测渗透率与流体粘度比值有很好的相关性。

关键词: 非达西流, 启动压力梯度, 实验研究, 稠油油藏, 新疆油田

Abstract:

Heavy oil reservoirs feature in high viscosity,non-Darcy flow,and the existence of start-up pressure.According to the percolation characteristics of heavy oil reservoir,a reasonable method for measuring the start-up pressure was designed.The start-up pressure gradient of oil phase and the relationships between velocity and pressure gradient under irreducible water saturation was studied through various percolation experiments at different viscosity,permeability and temperatures conditions with the natural cores from Xinjiang oilfield.The experimental formulas of start-up pressure gradient,velocity-differential pressure curve parameters,mud logging-derived permeability,and fluid viscosity were established through experimental data regression.These experiments indicate that the start-up pressure of heavy oil reservoir can be determined rapidly and accurately with the expe-rimental method.The influences of oil viscosity on start-up pressure gradient are greater than that of reservoir physical properties.The start-up pressure gradient and velocity-pressure curve parameters are well correlated with the ratio of mud logging-derived permeability to fluid viscosity.

Key words: non-darcy flow, start-up pressure gradient, experimental study, heavy oil reservoir, Xinjiang oilfield

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