裂缝三维延伸数值模拟与端部脱砂压裂技术
Numerical Simulation of Three-Dimensional Fracture Propagation and Tip Screen-Out Technology
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摘要: 介绍了水力压裂裂缝三维延伸数值模拟模型方面的发展动态,包括拟三维模型(P3DHF)和全三维模型(3DHF),并阐述了部脱砂(TSO)压裂这种新兴压裂工艺技术的机理、设计方法、适用范围和施工注意事项。指出了目前端部脱砂压裂设计的不足,建议将裂缝三线延伸模拟技术、端部脱砂压裂技术和控缝高压裂技术结合起来进行综合研究。Abstract: The developing trends of numerical simulation of 3Dhydraulic fracture are presented in this paper, includingpseudo -three-dimensional model and fully-three -dimensional model. The new tip screen -outtechnology and its mechanism,design method,applicationconditions and operating considerations are also discussed.Limitations in the current designs are pointed out. The 3Dfracture simulation, tip screen-out. and fracture heightgrowth control are suggested to be combined forinvestigation.