Tank Battery Calculator

As Water Cut rises, Gross Daily Fluid (Daily Oil Production divided by 1 minus Water Cut) grows because more total fluid has to be lifted and handled to produce the same net oil rate. Since Daily Water is a share of that growing gross fluid volume, Water Tanks required increases with water cut even while Daily Oil Production, and therefore the Oil Tanks count, stays the same -- a common pattern as wells age and water cut climbs over field life.

Storage Days is a direct multiplier on both Oil Storage Needed and Water Storage Needed (each is daily volume x Storage Days), so more days of storage require proportionally more total capacity and, once capacity crosses a tank's threshold, more tanks. Facilities in remote locations with infrequent trucking typically need more Storage Days than sites with daily pipeline takeaway.

Oil Shrinkage represents the volume lost as produced fluid moves from separator pressure down to atmospheric stock-tank conditions -- dissolved gas comes out of solution and the remaining liquid occupies less volume than it did downhole. Raising the Oil Shrinkage percentage LOWERS Net Oil Daily (and therefore Oil Storage Needed), since less of the originally produced oil volume survives as stock-tank oil once shrinkage is accounted for.

Oil and water are sold or disposed of through entirely different channels -- oil typically moves by pipeline or truck to a buyer, while produced water usually goes to a saltwater disposal well -- so they can't share the same tank. This calculator sizes each stream independently (Oil Tanks from Oil Storage Needed, Water Tanks from Water Storage Needed) and only sums them into Total Tanks Needed as an overall facility footprint count.