摘要
通过对涪陵页岩气田页岩气水平井气层无阻流量影响因素研究,定义含气指数、压裂改造指数、产气指数经验公式,建立基于产气指数的页岩气井无阻流量计算新模型。在涪陵页岩气田页岩气井130多口井应用表明,无阻流量平均计算误差小于20%,产气性评价符合率达到91.6%,该方法可为国内其他页岩气探区产能预测提供借鉴。
Based on study of influence factors of open-flow capacity of shale gas horizontal well gas layers in Fuling shale gasfield and definition of empirical formulas including gas-bearing index, fracturing index and gas production index, the new model to calculate open-flow capacity of shale gas wells based on gas production index is established. Its application in more than 130 shale gas wells shows that average calculation error is less than 20% and gas production performance assessment agreement rate reaches 91.6%, providing a reference for production prediction in the other domestic shale gas exploratory areas.
引文
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