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天然气地球科学

• 天然气开发 • 上一篇    

利用井口压力求井口产能方程及无阻流量

魏炜，郭康良，田朗，何亮，陈开研   

  1. 1.长江大学地球科学学院，湖北 武汉 430100；2.江汉石油工程有限公司国际合作公司，湖北 武汉 430074；
    3.成都理工大学能源学院，四川 成都 610059
  • 收稿日期:2014-06-17 修回日期:2014-09-19 出版日期:2015-02-10 发布日期:2015-02-10
  • 作者简介:魏炜(1989-),男，湖北潜江人，硕士研究生，主要从事油气田开发地质研究．E-mail:weiweiiew@163.com．

Calculation Equation of Wellhead Productivity and Absolute Open Flow Capacity via Wellhead Pressure

WEI Wei，GUO Kang-liang，TIAN Lang，HE Liang，CHEN Kai-yan   

  1. 1.School of Geosciences,Yangtze Univercity,Wuhan 430100,China; 2.Sinopec Oilfield Service Jianghan Corporation International,Wuhan 430074,China;3.Chengdu University of Technology Energy Institute,Chengdu 610059,China
  • Received:2014-06-17 Revised:2014-09-19 Online:2015-02-10 Published:2015-02-10

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摘要：

在油气田产能评价中气井的二项式和一点法产能方程经常被用来获取产能信息以及求取无阻流量。对于一些特殊情况的井，压力计无法下入产层中部，常规方法是先用井口压力折算出井底流压，再推导出二项式产能方程以及适合该区的一点法经验公式，这样做不仅费时费力还增加了不确定性。以TWT气藏资料为基础，尝试不通过折算而是直接利用井口压力推导出该区的井口产能方程，通过对比以此方程计算的无阻流量与常规方法计算的无阻流量，发现具有很好的函数关系，从而验证了利用井口压力资料不经折算直接建立起适合该区的产能方程并通过其求取无阻流量的方法是可行的。

关键词: 二项式产能方程, 一点法产能方程, 井口压力, 无阻流量

Abstract:

In deliverability evaluation of oil and gas field,the single point deliverability equation and binomial deliverability equation are often used to obtain the productivity to strike open flow capacity.For some special cases of the well,pressure gauge can not be put into the middle layer,conventional methods require the wellhead pressure converted into bottom-hole pressure,then find the binomial deliverability equation and single point deliverability equation suitable for the area,this is not only time consuming but also increases the uncertainty.In this paper,based on the data of TWT Gasfield，we try to directly use wellhead pressure to obtain the wellhead productivity equation but not through convert wellhead pressure.Compared to the open flow capacity derived from wellhead productivity equation and conventional deliverability equation,it is found to have the function very well,thus verify the feasibility of the method that does not convert wellhead pressure but directly calculate wellhead productivity equation and absolute open flow capacity by wellhead pressure.
 

Key words:

中图分类号: 

  • TE353
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