Abstract Hydraulic fracturing techniques have been widely used to create complex fracture network in unconventional reservoirs. The complexity of hydraulic fracture is significantly influenced by pre-existing fractures that widely exist in reservoirs. A better understanding of the interaction mode between induced hydraulic fractures and pre-existing fractures is helpful to estimate the fracture complexity, stimulated reservoir volume, and completion efficiency. In the present study, a review is conducted on the induced hydraulic fracture behaviours and interaction processes in laboratory test and theoretical analysis. It includes the effects of a series of parameters on the fracture behaviours, interaction modes, and interaction mechanism. Advantages and drawbacks of several theoretical criteria are compared, which are widely used to study the interaction mechanism. The sensitivity analysis of geological condition and hydraulic fracturing parameters on the interaction mode is performed. Then, some important findings in laboratory used to optimize operations of fracture-stimulation in the field are discussed. Based on the literature review, promising studies are recommended, which may provide more profound insights into study of the interaction mode.

中文翻译：

---

人工水力裂缝与先存裂缝相互作用模式的实验室研究与理论分析综述

摘要 水力压裂技术已被广泛用于在非常规储层中形成复杂的裂缝网络。水力压裂的复杂性受储层中广泛存在的先存裂缝的显着影响。更好地理解水力压裂与先存裂缝之间的相互作用模式有助于估计裂缝复杂性、增产储层体积和完井效率。在本研究中，对实验室试验和理论分析中的诱导水力压裂行为和相互作用过程进行了回顾。它包括一系列参数对断裂行为、相互作用模式和相互作用机制的影响。比较了几种理论准则的优缺点，被广泛用于研究相互作用机制。进行地质条件和水力压裂参数对相互作用模式的敏感性分析。然后，讨论了实验室中用于优化现场压裂操作的一些重要发现。在文献综述的基础上，推荐有前景的研究，这可能为交互模式的研究提供更深刻的见解。