Application Progress of Oil and Gas Pipeline Rehabilitation Technology

Pipeline transportation has a history of more than one hundred years as one of five main transportation methods of oil and gas. With the development of oil and gas producing, the development of pipeline becomes more rapidly in recent years. Oil and gas pipe inevitably suffers damages such as perforation leaks, reduction of intensity and so on due to corrosion, mechanical damage, weld defects, third-party damage and other factors during operation. Those damages lead to serious economic loss and great security risks to lives and environments. Pipeline rehabilitation technology can solve this problem; it can efficiently, economically and quickly restore the safe operation of pipeline. Therefore, the pipeline rehabilitation technology in pipeline project plays an important role. This paper describes the excavation and trenchless rehabilitation technology that commonly used for onshore pipeline, and introduces overwater and underwater pipeline rehabilitation technology for subsea pipeline, and makes the prospects of pipeline rehabilitation technologies.