摘要
将国外压后气井非达西流动规律研究相关文献的学习分析,与气井压后不稳定渗流理论相结合,对压裂井有限传导垂直裂缝线性流及地层径向流状态下的不稳定产能二项式方程进行推导,结合实际生产井有关资料,对两种流动状态下的产能方程和无阻流量的变化规律进行分析。相关理论与实际气井产能资料分析证明,流体渗流状态不同,产能方程的变化规律也迥然不同,无阻流量的变化规律也不一样。只有达到一定生产时间,才能得到地层径向流情况下的产能资料,进而求取气井真实产能方程。
Combining some overseas study results on non-Darcy flow and the theory of gas transient flow after fracturing,equations of both of linear flow and radial flow in finite conductivity vertical fracture and binomial deliverability equation are derived;based on real field data,changes of deliverability equation and AOFP for above two kinds of flow are analysis.It is verified that changes of deliverability equation and AOFP are totally different for different flow status;and only if the test time is long enough deliverability data under redial flow can be acquired and correct deliverability equation can be obtained.
出处
《油气井测试》
2010年第5期35-38,47,共5页
Well Testing
关键词
气井
产能评价
压裂井
系统试气
gas well,deliverability evaluation,fractured well,systemic gas well test
