... design parameters are mapped in order to identify some trends. Finally, survey images of operating pipelines are presented confirming behaviors predicted in the design phase. HP/HT pipelines lateral buckling pipeline walking OVERVIEW OF THE LATERAL BUCKLING AND WALKING DESIGNS OF DEEPWATER...

...) are susceptible to global buckling due to axial compressive load. To guarantee pipeline and equipment’s integrity frequently is necessary to relieve high stresses and strains at buckle apex as well as to mitigate end expansion. Thus, the two parallel HP/HT pipelines were designed with single and double sleepers...

... StatoilHydro operates a large number of High Pressure/High Temperature (HP/HT) pipeline systems in the Norwegian Sea. These lines connect remote subsea templates to floating processing and storage units. Flowlines are designed for a maximum temperature up to 155 °C and a pressure in the range...

... and engineering analysis procedures have been implemented into a design guideline for the design/verification of HP/HT pipelines laid on an uneven sea bottom (Ref. /16/) ACKNOWLEDGMENTS The authors would like to thank the sponsoring companies, Statoil, ENI Norge, Shell, BP and Hydro for permission to publish...

... for the deformation capacity, suggesting that the DNV OS-F101 formulation for the characteristic bending strain (which is based on FE predictions from HotPipe Phase I) may be non-conservative in certain cases. HP/HT pipelines limit states failure mode local buckling AB In theo buc pres stud pipe In t...