Composite pipeline repair systems involving infill material and composite wrapper are a common method of enhancing the integrity of damaged oil and gas pipelines. Composite wrappers can be theoretically optimised by minimising the layers of wrapper whilst reinforcing the infill material; i.e., putty. Integrating nanomaterial into putty to enhance its strength is a novel approach to provide secondary layer protection of damaged pipelines. A finite element model simulating a composite repaired pipe was developed to investigate the influence of reinforced Carbon Nanotubes putty on the system's overall repair performance and behaviour. The result was verified with a previous experimental hydrostatic burst pressure test and industrial standard resulting in less than a 15% error margin. The result shows the damaged artificial pipe segment filled with two different putties, namely Grout A and Grout B, ruptured at 32.22 MPa and 32.93 MPa, respectively. The reinforced putty improved the load-bearing capacity of the repaired pipe by a marginal increment of 2.2%. It demonstrated a better load-transfer and load-sharing mechanism than the common composite repair system. The recorded burst failure of the repaired pipe was less abrupt, thus minimising the sudden rupture of the pipeline by acting as a secondary layer of protection in the event of a composite wrapper failure.

涉及填充材料和复合包装材料的复合管道修复系统是增强受损油气管道完整性的常用方法。理论上可以通过在加强填充材料的同时最大限度地减少包装层来优化复合包装材料；即腻子。将纳米材料集成到腻子中以增强其强度是一种为受损管道提供二级保护的新方法。开发了模拟复合材料修复管道的有限元模型，以研究增强碳纳米管腻子对系统整体修复性能和行为的影响。结果已通过先前的实验性静压爆破压力测试和工业标准得到验证，误差小于 15%。结果表明，填充有两种不同腻子的损坏人造管段，即灌浆 A 和灌浆 B，分别在 32.22 MPa 和 32.93 MPa 下破裂。加固腻子使修复管的承载能力提高了2.2%的边际增量。它展示了比普通复合修复系统更好的负载转移和负载共享机制。记录的修复管道爆裂故障不太突然，因此在复合包装材料发生故障时充当第二层保护，从而最大限度地减少管道的突然破裂。它展示了比普通复合修复系统更好的负载转移和负载共享机制。记录的修复管道爆裂故障不太突然，因此在复合包装材料发生故障时充当第二层保护，从而最大限度地减少管道的突然破裂。它展示了比普通复合修复系统更好的负载转移和负载共享机制。记录的修复管道爆裂故障不太突然，因此在复合包装材料发生故障时充当第二层保护，从而最大限度地减少管道的突然破裂。