不稳定试井对低渗油藏污染分析及应用

Transient well test for low permeability reservoir pollution analysis and applied

文章介绍了长庆油田低渗油藏利用不稳定试井对地层污染的诊断,生产井由于受投产前大砂量压裂的影响,常规不稳定试井解释求出的总表皮系数S基本呈负值,无法对低渗储层产能做详细的污染分析,利用试井特征曲线早期流动段分析进行表皮分解方法,可获得一个较为真实的污染系数可以正确评价油气井损害,为油藏管理者提出合理的增产措施,对油气层保护和生产动态管理具有重要的指导意义。

This article describes the Changqing Oilfield in low permeability reservoir due to the impact before the commissioning of the large amount of sand fracturing, the conventional transient testing to explain to calculate the total skin factor S is basically negative, unable to production wells in low permeability reservoir capacity to do detailed analysis of the pollution, the use of the analysis of well test characteristic curve of the early mobile segment epidermis decomposition method to obtain a more real pollution coefficient can correctly evaluate the oil and gas wells damage, reservoir managers to make reasonable measures to increase production, protection and production of oil and gas layers dynamic management of important guiding significance.