many of the oil and gas platforms off california harbor high densities of young-ofthe-year (YoY) fishes, primarily rockfishes (genus Sebastes). one decommissioning option for these platforms is “topping,” cutting the structure some distance below the water line and leaving the rest of the jacket in place. Questions have arisen regarding how this option would affect the nursery function of the r...

As a modern infrastructure for offshore oil and gas resources development, platforms have many advantages, such as high efficiency, concentration, flexibility, repeatability. At the same time, its upper module environment is bad, equipment numerous, has very big risk. In case of fire explosion other accidents, it difficult to get timely rescue. Therefore, risk assessment platform necessary. Thi...

Offshore platform installation is associated with several inherent risks arising from majorcritical safety challenges such as fires, explosions, blowouts, falling objects, earthquake, extreme weather,and impact from moving objects such as helicopters or ships. These critical problems are due largely to designerrors or inadequacies, and poor maintenance. The safety challenges highlig...

in this study, boundary element method was used to model sea wave propagation on a hemisphere shape under water tank and oil-water common surface oscillation in the tank. also, kinematic and dynamic oundary conditions of free surface and common surface of oil and water were discritized by finite difference method. there were some singularities in bem method, which were removed by applying zonin...

Suction caisson is a type of floor foundation for the offshore structures that is also called suction pile, bucket foundation, suction anchor, or sometimes ridge foundation depending on its application. In two past decades, this type of foundation has been widely used around the world as the fixed offshore foundation, anchor of the floating platforms, as well as the foundation of other marine s...