论文部分内容阅读
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 variation and waterflooding characteristics of oil wells depend on the geological and physical characteristics of the formation, the distribution of oil and water in the formation and the way of oilfield development, that is, within a reservoir range, the impact on the water changes and flooding characteristics of each well is also different the same. Therefore, the formation of the oil or water injection unit has its own characteristics of the process of water changes, and oil recovery also make the process of reservoir extraction complexity, especially the multi-layer waterflooding oilfield development, when the water content is high, There are times when it is possible to keep some small formations with low pressure and so on. In order to study that the oil-water displacement process can reflect the phenomena occurring in the drainage area of the well and the characteristics of the waterflood process under the influence of various factors, based on the analysis of the conventional characteristic curves, in order to reflect the waterflooding characteristics more prominently, A new dimensionless analysis method is provided here to supplement the deficiencies of the characteristic curve analysis.