Method and Device for Predicting Ability of the Temporary Plugging Agent to Plug Cracks and Storage Medium

The present disclosure relates to a method and a device for predicting ability of a temporary plugging agent to plug cracks and a storage medium, and includes the following steps: calculating a plane elastic modulus of a core through experiments, acquiring a maximum force load of a specimen, calcula...

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Bibliographische Detailangaben
Hauptverfasser: Tang, Xuanhe, Shi, Yang, Wang, Daobing, Guo, Tiankui, Sun, Dongliang, Suo, Yu, Liu, Qing, Zhu, Haiyan, Zhou, Fujian, Yu, Bo, Liu, Xiongfei, Li, Xiuhui, Shi, Xian
Format: Patent
Sprache:eng
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Zusammenfassung:The present disclosure relates to a method and a device for predicting ability of a temporary plugging agent to plug cracks and a storage medium, and includes the following steps: calculating a plane elastic modulus of a core through experiments, acquiring a maximum force load of a specimen, calculating rock fracture toughness through the maximum force load, manufacturing an artificial crack model and placing it in a core holder, preparing temporary plugging deflection fluid by selecting a temporary plugging agent, injecting the temporary plugging deflection fluid into the artificial crack so as to calculate apparent fracture toughness of the temporarily plugged crack, and finally calculating a fracture pressure of the temporarily plugged crack based on the calculated rock fracture toughness and the plane elastic modulus of the core. Through the above method, the present disclosure provides a standard fracture pressure calculation method.