摘要
为确定新投入开发或已投入开发需加密调整的低孔低渗油藏的合理井网密度，从水驱控制程度、原油最终采收率、采油速度、驱替压力梯度、有效渗透率与探测半径、类比、三维数值模拟以及动态分析等８个方面与井网密度之间的关系，介绍了确定技术合理井距密度的方法；从经济角度介绍了确定经济最佳井网密度及经济极限井网密度的方法。合理井网密度优选原则是在满足低孔低渗油藏基本开发需要的条件下，尽可能达到最好的经济效益，当技术合理井网密度大于经济最佳井网密度，但小于经济极限井网密度时应选择前者。实例计算结果说明该方法合理实用。
This paper introduces ways to determine technically rational well density in a low porosity and low permeabili- ty reservoir based on factors such as relationship between well density and waterflooding reserves control level, ulti-mate recovery factor, rate of oil production, displacement pressure gradient effective permeability and investigation radius; presents methods to select economically optimal well density and economy limit well density. An optimization principle of rational well density is to realize the largest economic benefits while meeting the fundamental require- ments of development of low porosity and low permeability reservoirs. When technically rational well density is larger than economically optimal well density while smaller than economic limit well density, the former should be selected. Calculation results show that this method is practical.
出处
《河南石油》
2001年第4期19-21,共3页
Henan Petroleum
