دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a subsea riser with a large “S” that allows flexing and movement of the line.

n: a method for joining a pipeline to a subsea riser on a platform. In the J-tube method. the pipe is lifted off the ocean floor when it reaches the platform and is then fed up to the surface through a guide tube. During this process, the pipe assumes a J configuration. Compare reverse J-tube method.

n: a method of joining a pipeline to a subsea riser on an offshore platform. In this method the pipe is welded together on the platform itself and then fed down through a guide tube to the seafloor. Compare J-tube method.

n: a vertical section of pipe that connects pipeline on the sea bottom to a production platform on the surface. The riser is an integral part of the pipeline and is clamped directly to a leg or brace on the platform.