单井新增可采储量和单井控制储量的关系

A relationship between single-well added recoverable reserves and controlled reserves

基于对石油可采储量计算方法行业标准中所列水驱砂岩油藏采收率计算公式的筛选结果,推导出了单井新增可采储量和单井控制储量的关系,结果表明单井新增可采储量与单井控制储量的平方成正比。对关系式系数进行了讨论,认为可以通过分析动态资料或类比驱油效率与单储系数的比值确定系数值,从而得到了考虑动态影响的关系式。典型油田应用结果表明,本文推导的关系式具有较高的预测精度,可以作为评价油田经济合理单井控制储量和经济合理井网密度的基础。

Based on a selection of the recovery factor formulas for water-drive sandstone reservoirs in the in- dustry standard of methods to calculate recoverable oil reserves, a relationship between single-well added recoverable reserves and controlled reserves was derived, i.e. single-well added recoverable reserves will be directly proportional to the square of single-well controlled reserves. According to a discussion on the coefficient of this relational expression, it could be identified by analyzing the dynamic data or analogizing the ratio of flooding efficiency to unit reserves factor, thus making the expression reflect the dynamic im pacts. The application of this relationship in typical oilfields has shown that it is quite high in prediction accuracy and can provide a basis for evaluating economically reasonable single-well controlled reserves and well spacing density in oilfields.