石油学报 ›› 2015, Vol. 36 ›› Issue (10): 1267-1271.DOI: 10.7623/syxb201510009

• 油田开发 • 上一篇    下一篇

特高含水阶段新型水驱特征曲线

崔传智1, 徐建鹏1, 王端平2, 杨勇2, 刘志宏2, 黄迎松2   

  1. 1. 中国石油大学石油工程学院 山东青岛 266580;
    2. 中国石油化工股份有限公司胜利油田分公司勘探开发研究院 山东东营 257015
  • 收稿日期:2015-03-20 修回日期:2015-07-31 出版日期:2015-10-25 发布日期:2015-11-09
  • 通讯作者: 崔传智,男,1970年1月生,1993年获石油大学(华东)油藏工程专业学士学位,2005年获中国地质大学(北京)矿产普查与勘探专业博士学位,现为中国石油大学(华东)石油工程学院教授,主要从事油气渗流理论、油气田开发技术方面的研究工作。Email:ccz2008@126.com
  • 作者简介:崔传智,男,1970年1月生,1993年获石油大学(华东)油藏工程专业学士学位,2005年获中国地质大学(北京)矿产普查与勘探专业博士学位,现为中国石油大学(华东)石油工程学院教授,主要从事油气渗流理论、油气田开发技术方面的研究工作。Email:ccz2008@126.com
  • 基金资助:

    国家重大科技专项(2011ZX05011-002)和教育部长江学者和创新团队发展计划项目(IRT1294)资助。

A new water flooding characteristic curve at ultra-high water cut stage

Cui Chuanzhi1, Xu Jianpeng1, Wang Duanping2, Yang Yong2, Liu Zhihong2, Huang Yingsong2   

  1. 1. School of Petroleum Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
    2. Exploration and Development Research Institute, Sinopec Shengli Oilfield Company, Shandong Dongying 257015, China
  • Received:2015-03-20 Revised:2015-07-31 Online:2015-10-25 Published:2015-11-09

摘要:

水驱油藏开发进入特高含水阶段之后,油、水相对渗透率的比值与含水饱和度的关系会偏离直线,常规水驱特征曲线也会偏离直线,此时再应用常规水驱特征曲线预测开发指标会产生较大误差。针对此现象提出了新型渗流表征关系即油、水相对渗透率比值与含水饱和度的关系表达式,该表达式能够对中后期的油、水相对渗透率比值与含水饱和度的关系进行高精度拟合。在此基础上,运用油藏工程方法推导了一种新型水驱特征曲线。利用油藏数值模拟结果和现场数据对新型水驱特征曲线与常规水驱特征曲线进行对比,结果表明新型水驱特征曲线对高含水期及特高含水期的数据拟合具有更好的适应性,很好地解决了特高含水阶段曲线上弯和预测误差偏大的问题,有较好的现场实用价值。

关键词: 特高含水期, 相对渗透率曲线, 含水饱和度, 水驱特征曲线, 曲线拟合

Abstract:

When water flooding reservoirs enter the ultra-high water cut stage, the relationship between the ratio of oil-water relative permeability and water saturation will deviate from a straight line, as well as the conventional water flooding characteristic curve. In the meantime, great errors will be caused by the use of conventional water flooding characteristic curve for predicting development indicators. Aiming at this phenomenon, this study puts forward a new percolation characteristic relationship, i.e., expression of the relationship between the ratio of oil-water relative permeability and water saturation. This expression can be used for high-precision fitting on the relationship between the ratio of oil-water relative permeability and water saturation in the mid-late stage. On this basis, a new water flooding characteristic curve is deduced using reservoir engineering method. A comparison is made between new and conventional water flooding characteristic curves based on numerical simulation result and field data of reservoirs. The results show that the new water flooding characteristic curve has a better adaptability for data fitting at the high and ultra-high water cut stages, thus solving the problem of upward bending curve at the ultra-high water cut stage and large prediction errors. This method is proven to have better on-site application values.

Key words: ultra-high water cut stage, relative permeability curve, water saturation, water flooding characteristic curve, curve fitting

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