摘要
油井含水的变化及水淹特征取决于产层的地质、物理特性,地层油水分布以及油田开发方式等,即是在一个油藏范围内,对各井含水变化及水淹特征的影响也各不相同。因此,形成了油井或注采单元的含水变化过程有自己的特点,而含水采油也使油藏储量的开采过程复杂化,特别是多层层系的注水开发油田,当含水率较高时,有时令使一些地层压力低的小层不出油等等。为了研究油水驱替过程能反映出该井泄油范围内所发生的现象及各因素影响下的水驱过程特征,本文在常规特征曲线分析的基础上,为了能更显著的反映水驱特点,在此提供一种新的无因次量分析方法,以补充特征曲线分析的不足。
The change of water cut in oil wells and water flooded feature depend on reservoir geology,physical properties,formation water distribution and oilfield development mode;In the same reservoir range,the change of water cut in oil wells and water flooded feature are different.Therefore,water change process of an oil well or injection-production unit has its own characteristics,and production under water cut also makes reservoir development complication.Especially multiplayer series of waterflooding oilfields;when the moisture content is higher,formation pressure is lower than small layer,so oil can not be produced.In this paper,in order to study oil-water displacement process that can reflect the water-drive process characteristics under different conditions,based on analysis of the conventional characteristic curve,a kind of new dimensionless quantity analysis method was put forward in order to reflect the water drive characteristic and supple the shortage of the characteristic curve analysis.
出处
《辽宁化工》
CAS
2013年第1期65-67,共3页
Liaoning Chemical Industry
关键词
注水单元
无因次量
水驱特征曲线
water injection unit
dimensionless quantity
water drive characteristic curve
