Patent ID: 8690480

Claim:
A free standing hybrid riser system comprising: a vertical section including an upper strengthening joint; a buoyant unit; a top riser assembly (TRA) below the buoyant unit and connected at a first connection point on the TRA to the upper strengthening joint, wherein a vertical axis extends through the first connection point; the buoyant unit is connected to the TRA at a second connection point on the TRA wherein the second connection point is offset horizontally from the vertical axis; and a flexible jumper connected to the TRA at a third connection point on the TRA, wherein the third connection point is offset horizontally from the vertical axis; wherein a first bending moment is applied about the first connection point on the TRA by the buoyant unit, and a second bending moment is applied about the first connection point to the TRA by the flexible jumper, wherein the first and second bending moments oppose each other.