新区经济可采储量计算方法

为了计算新区钻加密调整井的经济界限，快速评估新区储量．根据影响单井经济可采储量的主要因素地质条件和油价、成本、投资等经济条件之间的关系，利用资金的盈亏平衡原理．以原油采收率和井网密度的指数关系式为基础．通过确定钻新井必须满足的新增可采储量界限，建立了新区加密调整井的经济合理井网密度的新计算模型。经大量买例检验，该模型各项参数容易求取，计算方便灵活，不但能够满足钻调整井的前期评价需要，而且能够评估新区储量．是一种实用的计算方法。表4参12

Calculation of the economic recoverable reserves in the undeveloped area

A new calculation model is provided to calculate the economic limit of infilling in undeveloped area and to quickly evaluate the reserves. Based on the relationship between geology conditions, oil price, costs and investments, profit and loss balance theory and the exponential relation between recovery and well pattern density, a new model is put forward to determine the economic limit for well pattern infilling by calculation of the enhanced recoverable reserves a newly drilled well must provide. Applications demonstrate that the parameters of the new model are easy to derive and the calculation is convenient. It is a practical calculation method, satisfying not only fore-evaluation of adjusting drilling, but also evaluation of the reserves of undeveloped area.