For the Ahe formation in the DZ area of Tarim Basin, the weak structural plane and natural fractures develop, and the hydraulic fractures are complex. The conventional fracturing model cannot accurately guide the field fracturing design. The guiding idea of this research is the integration of geological engineering. It carried out the core indoor experiment. Based on the imaging logging data, the properties of the weak structural plane were quantitatively characterized. The geomechanical model with the weak structural plane and the spatial distribution model of natural fractures were constructed. The propagation law of hydraulic fracture was studied. The simulation results compared the hydraulic fracture considering the property of weak discontinuity and without considering the property of weak discontinuity. The results showed that the weak structure significantly limited the longitudinal expansion of hydraulic cracks, and the cracks were easier to extend laterally. Based on the geomechanical and natural fracture model considering the property of weak structural plane, the hydraulic fracture morphology of different fracturing parameter combinations was simulated, and the fracturing parameters were optimized. The field application verified the longitudinal restriction of the weak laminar structure on the fracture and the rationality of the fracturing design.

塔里木盆地DZ地区阿河组发育弱构造面和天然裂缝，水力裂缝复杂。常规压裂模型无法准确指导现场压裂设计。本研究的指导思想是地质工程一体化。它进行了核心室内实验。基于成像测井资料，定量表征了弱结构面的性质。构建了弱构造面地质力学模型和天然裂缝空间分布模型。研究了水力裂缝的扩展规律。模拟结果比较了考虑弱间断特性和不考虑弱间断特性的水力压裂。结果表明，弱结构显着限制了水力裂缝的纵向扩展，裂缝更容易横向扩展。基于考虑弱结构面性质的地质力学和天然裂缝模型，模拟了不同压裂参数组合的水力裂缝形态，并优化了压裂参数。现场应用验证了弱层状结构对裂缝的纵向约束和压裂设计的合理性。模拟了不同压裂参数组合的水力压裂形态，优化了压裂参数。现场应用验证了弱层状结构对裂缝的纵向约束和压裂设计的合理性。模拟了不同压裂参数组合的水力压裂形态，优化了压裂参数。现场应用验证了弱层状结构对裂缝的纵向约束和压裂设计的合理性。