| abstract |
A flowline jumper handling apparatus for supporting a flowline jumper in a generally horizontal position as it is offloaded from a surface structure with a first lifting apparatus and then supporting the flowline jumper in a generally vertical position as it is lowered to a subsea structure with a second lifting apparatus. The flowline jumper handling apparatus comprises an elongated spreader bar, at least one first cable connecting the spreader bar to the flowline jumper, at least one second cable connecting the spreader bar to a through member, at least one third cable connecting the through member to the second lifting apparatus, at least one fourth cable passing through the through member and connecting the flowline jumper to the first lifting apparatus, and a restricting member for preventing a portion of the fourth cable from passing through the through member. In this manner, as the fourth cable is lifted by the first lifting apparatus, the restricting member will engage the through member and support the flowline jumper in a generally horizontal position. Furthermore, as the fourth cable is lowered, the flowline jumper will rotate from the generally horizontal position to the generally vertical position. |