Inlet-outlet system and method for subsea storage

Storage system comprising a flexible bag for storing a fluid, where the flexible bag is arranged within a protection structure with a structure volume, wherein the protection structure comprises a bottom element forming the lower section of the protection structure,

• the flexible bag is connected to the protection structure,
• the system comprises at least one fluid conduit providing fluid communication between a storage volume inside the flexible bag and a position outside the protection structure,
• wherein
• the storage system comprises
• a first outlet pipe with an opening arranged inside the flexible bag near the bottom element wherein the first outlet pipe is connected to and in fluid communication with the at least one fluid conduit and
• a perforated tube surrounding the outlet pipe providing an annulus fluid passage, such that fluid when being removed from the storage volume can flow through perforations in the perforated tube (14), through the annulus fluid passage to the opening of the first outlet pipe and through the outlet pipe to the at least one fluid conduit, wherein the perforated tube comprises asymmetric perforations over the length of the tube providing a larger inflow area in the upper half of the tube compared to the lower half of the perforated tube.