计算物理 ›› 2015, Vol. 32 ›› Issue (4): 469-474.

• 论文 • 上一篇    下一篇

气顶油藏油气界面移动距离的计算

张安刚, 范子菲, 宋珩   

  1. 中国石油勘探开发研究院, 北京 100083
  • 收稿日期:2014-06-05 修回日期:2014-10-31 出版日期:2015-07-25 发布日期:2015-07-25
  • 作者简介:张安刚(1986-),男,博士生,现从事海外油气田开发工程研究,E-mail:ansenking2001@163.com
  • 基金资助:
    中国石油股份公司重大专项(2011E-2504)资助项目

Calculation of Oil-Gas Contact Migration Distance in Gas Cap Reservoir

ZHANG Angang, FAN Zifei, SONG Heng   

  1. Research Institute of Petroleum Exploration and Development, Beijing 100083, China
  • Received:2014-06-05 Revised:2014-10-31 Online:2015-07-25 Published:2015-07-25

摘要: 针对带地层倾角的气顶油藏,利用跟踪质点的拉格朗日法描述油气界面移动的力学特性;借助油气渗流的基本微分方程组,并假设油气界面呈平直线移动,求解气井和油井单独定流量生产时的油气界面移动;将计算模型进行实例计算.结果表明:随着地层压力的降低,油气界面上气相势的下降要比油相势大很多;油井单独生产时,油气界面偏向油井方向移动,而气井单独生产时,油气界面偏向气井方向移动;合理的控制采油采气速度,可以较好地保持油气界面的稳定.

关键词: 气顶油藏, 油气界面, 移动规律, 油相势, 气相势

Abstract: For gas cap reservoir with strata dip,mechanical property of oil-gas contact movement is described by particle-tracing of Lagrange. With assumption of straight line movement,movement of oil-gas contact is obtained by basic differential equations of oil and gas seepage. Application results show that: With decrease of reservoir pressure,decline of gas phase potential is much greater than oil phase potential; Oil-gas contact intends to move towards oil well as oil rim is only developed; On the contrary,oil-gas contact intends to move towards gas well as gas cap is only developed; Rational control of oil recovery rate and gas recovery rate is beneficial to stabilize oil-gas contact.

Key words: gas cap reservoir, oil-gas contact, movement law, oil phase potential, gas phase potential

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