试井资料在压裂选层中的作用

为进一步提高压裂成功率,必须加强压裂选层的准确率。试井资料是储层物性、污染情况等信息的综合反映,根据压前测试及试井曲线形态不仅可以预测压裂后能否达到工业油流,而且可以预测压裂后的产量变化。若地层均质无限大,则压裂后求产期间产量稳定;若压前试井曲线见边界反映,则必须结合边界形状和距离预测压裂后的产量递减规律,慎重考虑是否具有改造价值。

Application of Testing Data for Selecting Layer in Fracture

To increase the successfulness ratio of fracture, veracity of selecting fractured layer should be strengthened. Well testing data is important for selecting layer in fractured well which comprehensively reflects information of reservoir performance. According to the shapes of testing curves before and after fracture, it is not only predicting whether there is industrial oil or not, but also forecasting the change of oil production. Oil yield is steady after fracture if the formation is isotrope and unlimited. But if boundary appears, the shape and distance of it should be integrated to predict the law of decrease of production and whether or not to reform the formation should be considered prudently.