Collapse Pressure Prediction And Measurement Methodology of UOE Pipe

Abstract

In recent years, an increasing number of deepwater pipeline-construction projects has been planned for intercontinental transportation of natural gas. The pipelines to be laid in the deep sea must have adequate collapse resistance to withstand the high external pressure. This paper describes the collapse resistance of the UOE pipe to be used for the deepwater pipeline: The mechanical properties of the UOE pipe are determined, the collapse pressure is estimated, and the appropriate test methods for measuring the collapse resistance are examined. Consequently, this study has established a method for measuring mechanical properties to predict collapse pressure, the correction factors for collapse tests under various conditions, and numerical analysis simulation modeling methods.