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定向钻施工管道基本上不可能进行维修,建设期的质量隐患可能导致很快穿孔泄漏。穿越岩石等复杂地段的定向钻穿越3PE防腐层(三层结构聚乙烯加强级防腐层)加改性无溶剂环氧玻璃钢防护层,可以降低管道穿越过程中3PE防腐层损伤风险,以达到保证管道安全运行的目的。本文主要介绍了定向钻3PE防腐层损伤原因、无溶剂环氧玻璃钢防护层施工工艺、质量检验方法和施工效果等。
Directional drilling construction pipeline is basically impossible to repair, quality problems during construction may lead to rapid perforation leak. Directional drilling through complex sections such as rocks passes through a 3PE coating (three-layer polyethylene reinforced coating) plus a modified solvent-free epoxy fiberglass coating to reduce the risk of damage to the 3PE coating during pipe traversing to ensure that the pipe The purpose of safe operation. This paper mainly introduces the reason of damage of directional drilling 3PE coating, construction technology of solvent-free epoxy fiberglass coating, quality inspection method and construction effect.