Objectives and Scope: This paper presents the use of compression-fit high-density polyethylene (HDPE) liners as a proven solution to mitigate internal corrosion across challenging pipeline environments. It highlights how internal lining ensures long-term asset integrity while reducing reliance on costly corrosion-resistant alloys, chemical treatment, or dehydration infrastructure. Methods, Procedures, Process: The paper compares corrosion challenges across multiple pipeline environments. It outlines engineering principles behind compression-fit lining, reviews installation techniques, and shares data from projects in the Permian Basin and other high-risk regions. Case studies detail performance in both new and aging pipelines, including retrofits in sensitive or remote areas. Results, Observations,
Conclusions: Field-proven results show HDPE liners significantly reduce or eliminate internal corrosion, scaling, and pitting—especially where MIC, H₂S, chlorides, and solids cause asset degradation. Operators have extended service life, reduced O&M costs, and avoided premature failures. Unlike coatings or inhibitors, HDPE provides a continuous internal corrosion barrier. Significance / Novelty: With rising demand for corrosion control, HDPE lining offers a scalable, safe, and cost-effective alternative. It supports long-term integrity, environmental compliance, and reliability across both aging and new pipeline assets.
