摘要
建立了考虑表皮效应的层状越流油藏定井底流压生产的数学模型,求得拉氏空间下无 因次流量和累积流量的解析解;利用Stehfest数值反演,绘制了实空间下的无因次流量及累积流量 与无因次时间的双对数曲线。所获得的结果有助于认识层状油藏的流量动态并进行产量预测,还 可为是否需要对井筒附近进行改善提供参考。定井底流压下流量响应所反应出的油藏信息,有助 于确定油藏参数。
A mathematical model of boundary reservoir with channeling layer produced on condition of stable down hole flowing pressure is built considering skin factors and resolution of dimensionless flow and accumulation flow in Laplace space. By use of Stehfest numerical inversion, double logarithm curve of dimensionless flow and accumulation flow in real space with dimensionless time is plotted. The obtained result is not only helpful for knowing flowing trends of layer reservoir and forecasting production, but also provides a reference for whether or not developing neighborhood of well bore. The reservoir information from flow response on condition of stable bottom hole pressure helps to determine reservoir information.
出处
《油气井测试》
2005年第6期5-7,共3页
Well Testing
关键词
层状油藏
窜流
定井底流压
流量动态
数值反演
layer reservoir, channeling, stable bottom hole pressure, flow dynamic, numerical inversion
