A Novel Subsea Pipeline Connection Method and Experimental Study

摘要

In the deepwater oil-gas exploitation, it is a fast non-weld connectionthat is the key for subsea structures. Paper takes the connection betweenpipelines as an example to design a NSPC. In the works, the designprocesses, such as formula of contact pressure on the sealing face,critical contact pressure for 8 inch NSPC, CPV, MCP, PFEM createdby ANSYS, and optimal design based on MOGA, etc., were discussedand analyzed in details. Four types of experiments of optimizedconnectors and non-optimized ones are carried out to test theperformance in seal and resisting external load. The NSPC is alsoapplied to the connection of other subsea oil-gas production equipment,which provides a valid method for deep water connection.