中文摘要：

油气资源的勘探开发是石油化工产业的前提。为了研究水力裂缝在层状页岩储层中的扩展规律,采用基于有限元的数值模拟方法探索和分析了水力裂缝遇到天然层理时滑移、偏转、分叉最终形成纵横交错的缝网的过程,并探讨了储层地应力差对压裂缝网复杂性的影响,结果显示,储层地应力差越小时模型结果的裂缝复杂性指数越大,利于复杂压裂缝网的形成。结论可望从数值分析的角度为页岩储层的勘探开发及后续化工生产提供进一步的参考。

英文摘要：

Petroleum exploration and development is the precondition of petrochemical engineering. The mechanism of how hydraulic fracture propagates in layered shale reservoir was numerically investigated and the result visually exhibited the whole process of fracture slippage, deflection, bifurcation and the final formation of a fracture network while running into the natural beddings. Moreover, another series of numerical models were performed to investigate the influence of reservoir in-situ deviatoric stress on the fracture complexity. Conclusion was drawn that a lower value of reservoir in-situ deviatoric stress can bring a higher value of fracture network complexity index, which denoted a more complex geometry of fracture network. It was expected to provide further preference for petroleum exploration and subsequent petrochemical engineering.