试井资料在压裂效果评价中的应用

目前对水力压裂效果评价最有效的方法是压力恢复试井。用压力恢复试井资料评价压裂效果时，首先用压前压力恢复试井资料求取地层有效渗透率和地层压力，其后用压后压力恢复试井资料和压前求取的地层参数对压裂裂缝做出正确解释、排除解释结果的多解性，最后应用压力恢复试井解释结果来评价压裂效果。用压力恢复试井解释了准东低渗油藏20口压裂井压裂裂缝特征，并与三维压裂模型计算结果作了比较并评价了准东油田压裂效果。

Application of Well Test Data to Evaluation of Hydraulic Fracturing Performance

Buildup test is now recognized to be the most effective method for evaluation of hydraulic fracturing performance. Formation pressure and effective permeability can be estimated by pre-fracturing buildup test data, then applied to make a proper interpretation for hydraulic fractures together with the post-fracturing buildup test data in order to avoid that different results of interpretation take place and provide correct e-valuation of the frac-performance. In this paper, 20 fractured wells in Zhundong low-permeability reservoir and their hydraulic fracture features have been explained by the buildup test method, with which comparison of calculated results from a 3D hydraulic fracturing model is conducted, followed by overall evaluation of frac-performance in Zhundong oilfield by using these buildup test data.