目前对水力压裂效果评价最有效的方法是压力恢复试井。
Buildup test is now recognized to be the most effective method for evaluation of hydraulic fracturing performance.
低渗透油田的压力恢复试井资料一般不能测出径向流直线段，称为早期试井资料。
Pressure restore well test data of low permeable oil fields cannot test the straight line segment of radial flow, being called earlier well test data.
在原有的试井理论基础上，推导出欠平衡钻井随钻试井数学模型，并结合现有的试井方法，提出欠平衡钻井随钻试井实用方法——修正压降试井法和修正压力恢复试井法。
Based on the original well testing theory, the theory of well testing while UBD and the corresponding practical well testing method are derived. The well testing method is applied to two wells.
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