A isolated flexible storage device under water for offshore oil and gas field

The utility model discloses an isolated flexible storage device under water for offshore oil and gas field, it is including airtight storage tank and a plurality of storage monomer, a plurality of the vertical range rigid coupling of storage monomer is in in the airtight storage tank, airtight storage tank is equipped with the water pipe with external intercommunication, the storage monomer is equipped with the soft bag of flexibility and an open sheath be equipped with loading and unloading medium pipeline on the flexible soft bag, loading and unloading medium pipeline is fixed on the open sheath. The utility model discloses remain the main?advantages of dry -type oil storage method, crude oil or other liquid hydrocarbon and sea water not direct contact, can keep warm, can storage water solubility liquid methyl alcohol for example. And simultaneously, the utility model overcomes two major shortcomings of dry -type oil storage method. The safety ring guarantor can be suitable for the different depth of waters