The nonlinear mechanical model about fracturing string was established. The gap element was adopted to simulate the contact condition between the fracturing string and the inside wall of the casing.
采用间隙元模拟压裂管柱与套管内壁接触摩擦状态,推导出轴向摩阻力与位移协调条件,统一描述水力锚、封隔器、滑套喷砂器在不同工况下的受力和变形状态,建立了压裂管柱双重非线性有限单元法。
参考来源 - 压裂管柱有限元分析及应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Better reverse washing of the fracturing string and reliable sealing property offer a set of effective completion techniques for slant hole well production.
斜直井压裂管柱良好的反洗井和可靠的密封性能为斜直井开采提供了一套有效的完井技术。
After field experiment and application, the string shows reliable performance, which can meet the staged fracturing requirement.
经现场试验及应用，该管柱性能可靠，满足水平井分段压裂要求。
Field application results show that the string of double-sealing and single-stick subsection fracturing can meet the demands of pressurization behavior and sand amount.
现场施工效果表明，双封单卡分段压裂管柱在承压性能及过砂量要求上，能满足要求；
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