DST测试资料解释中的数值计算  

The Numerical Computation of DST Transient Pressure Interpretation

作　　者：许江文[1] 彭威[2] 毕全福 胡广文 陈超峰[1] 

机构地区：[1]新疆油田公司勘探公司,新疆克拉玛依834000 [2]中国科学技术大学,安徽合肥230026 [3]西部钻探工程公司试油公司,新疆克拉玛依834000

出　　处：《油气井测试》2013年第1期57-60,78,共4页Well Testing

摘　　要：根据DST流动的实际情况建立了DST流动的井筒垂直管流与地层渗流数学模型,通过无量纲的定义推导出DST流动方程的无量纲方程,针对无量纲方程采用Laplace变换求解DST第一个流动的压力分布,将关井时刻的压力分布作为压力恢复方程的初始条件,通过数值方法计算压力恢复曲线。本文的最后通过一个现场实例DST测试资料的试井分析方法。This paper setup coupled equations both well-bore vertical conduit flow and formation filtration according to actual drilling stem testing(DST) flow.The dimensionless mathematical model is derived by defining the dimensionless variable of DST flow.The pressure distribution at the first flow period is obtained in Laplace space.The initial condition of pressure buildup’s equation is pressure distribution at shut-up time.The pressure buildup curve is obtained by numerical method.Final,an example is applied to show how use the DST model to interpret data of transient pressure.

关 键 词：DST测试 耦合流动 LAPLACE变换 数值求解 

分 类 号：TE353[石油与天然气工程—油气田开发工程]