天然气地球科学

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计算水驱气藏动态储量和水侵量的简易新方法

胡俊坤,李晓平,张健涛,张修明   

  1. 1.西南石油大学油气藏地质及开发工程国家重点实验室,四川 成都 610500;
    2.中国石油西南油气田工程技术监督中心地质监督室,四川 广汉 618300;
    3.中国石油西南油气田川东北气矿宣汉采气作业区,四川 宣汉 636165
  • 收稿日期:2012-04-01 修回日期:2012-05-02 出版日期:2012-12-10 发布日期:2012-12-10
  • 通讯作者: 胡俊坤hjk1216.ok@163.com E-mail:hjk1216.ok@163.com
  • 作者简介:胡俊坤(1984-),男,湖北当阳人,博士研究生,主要从事油气藏工程及试井分析研究. E-mail:hjk1216.ok@163.com.

A New Convenient Method for Calculating DynamicReserves and Water Influx in Water Driving Gas Reservoir

HU Jun-kun,LI Xiao-ping,ZHANG Jian-tao,ZHANG Xiu-ming   

  1. 1.State Key Laboratory of Oil Gas Geology and Exploration Engineering,Southwest Petroleum University,Chengdu 610500,China;2.Engineering Technology Supervision Center of Southwest Oil and Gas Field Company,PetroChina,Guanghan 618300,China;
    3.Northeast Gas Field of Southwest Oil and Gas Field Company,PetroChina,Xuanhan 636165,China
  • Received:2012-04-01 Revised:2012-05-02 Online:2012-12-10 Published:2012-12-10

摘要:

通过对水驱气藏动态储量和水侵量计算方法的研究,提出了计算水驱气藏动态储量和水侵量的简易新方法。新方法根据水驱气藏的物质平衡方程,作出了水驱气藏无因次视压力与采出程度的理论图版。根据图版拟合法的思想,结合水驱气藏的生产动态资料及测压资料,通过参数的调整,使得水驱气藏无因次视压力与采出程度的实际曲线与理论曲线达到好的拟合程度。最后根据图版拟合所得参数,通过相关计算即可确定水驱气藏的动态储量和水侵量,同时对水驱气藏水体能量的强弱进行评价。新方法不需要对水体形态和大小做任何假设,所需资料易获取,计算过程简便。实例计算表明,新方法计算结果准确,实用性强。

 

关键词: 水驱气藏, 动态储量, 水侵量, 图版拟合

Abstract:

By calculating dynamic reserves and water influx of water driving gas reservoir,we propose a new convenient method for calculating dynamic reserves and water influx.According to material balance equation of water driving gas reservoir,we point out the chart of dimensionless extrapolated pressure and degree of reserve recovery in water driving gas reservoir.Based on curve matching as well as data of production performance and measuring pressure,we adjust the parameters to make the actual curve of dimensionless extrapolated pressure and degree of reserve recovery in water driving gas reservoir and the theoretical curve achieve a good fitting.According to parameters obtained by type curve match analysis,the dynamic reserves and water influx of water drive gas reservoir can be calculated,and the strength of the energy of the water body can be evaluated.It is not required for the new method to do any assumption of aquifer shape and size,the inputting data is easy to collect,and calculating process is simple.The case indicates that the new method is accurate and practical.

Key words: Water drive gas reservoir, Dynamic reserves, Water influx, Type curve matching

中图分类号: 

  • TE341

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