地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->预发布刊期->第39卷第4期


致密砂岩气藏压裂井见水后流入动态研究
Inflow performance analysis for fractured wells in tight sand gas reservoirs after water breakthrough
宋力,覃勇,崔永兴,王明华,王平
点击:1519次 下载:7次
DOI:
作者单位:川庆钻探工程有限公司钻采工程技术研究院,川庆钻探工程有限公司泥浆公司,塔里木油田分公司塔中勘探开发项目经理部,川庆钻探工程有限公司川西钻探公司
中文关键字:致密砂岩气藏 见水 压裂井 流入动态 启动压力梯度 应力敏感
英文关键字:tight and gas reservoir water breakthrough fractured well inflow performance threshold pressure gradient stress sensitivity
中文摘要:由于裂缝的影响,致密砂岩气藏内的压裂井易见水,准确预测此时流入动态对合理配产具有重要的指导意义。针对致密砂岩气藏气水同产压裂井的渗流特征,将渗流场划分为地层及裂缝两个部分,以非达西稳态渗流理论为基础,基于扰动椭圆及等价发展矩形思想,分别建立了考虑启动压力梯度及应力敏感的气水两相拟压力函数,并推导出各区相应的产能方程,最终采用Newton-Raphson数值方法对产能方程进行求解。实例计算表明,该方程计算的气井无阻流量与实际产能测试结果误差较小,具有较强的实用性。
英文摘要:Jeopardized by the existence of fractures, there are more possibilities for fractured wells in tight sand reservoirs with water breakthrough. Therefore, rational forecasts for those wells’ inflow performances are significant for optimal distributing production. Based on the characteristics of seepage flow in water and gas two-phase flow fractured wells in low permeability gas reservoir, the seepage field was divided into the formation field and the fracture field. Then combined the theory of non-Darcy seepage law with the concepts of perturbable ellipses and equivalent developing regulations, the water and gas two-phase pseudo-pressure functions of each field were established considering the threshold pressure gradient and stress sensitivity and productivity equations were derived respectively. Eventually, the equations were solved by means of the Newton-Raphson numerical method. Case study shows that the open flow potential value calculated by this article had little error compared with the value gained by practical productivity well test.
读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2018天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第1813848名访问者