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Method of design and manufacture Subsea Chemical Bladder Reservoir Equinor Energy AS Authors; Henrik Vedeld, Glenn-Roar Halvorsen, Børge Pettersen, Steingrim Svare Thommesen Background For conventional subsea wells, a so-called "umbilical" is installed to convey fluids from the host facility to each subsea well (in addition to power and communication, where relevant). The fluids conveyed to the well through the umbilical may be hydraulic control fluids and/or fluids to be injected into the well stream (such as, but not limited to: hydrate inhibitors, corrosion inhibitors, wax/scale inhibitors, etc.). Fluids are pumped from conventional fluid reservoirs positioned at surface, where the reservoirs typically have a breather lin...