The vessel is anchored at a water depth of 2,140 m (7,020 ft), 310 km (193 mi) off the coast of São Paulo state. It is designed to produce up to 150,000 b/d, compress up to 6 MMcm/d (212 MMcf/d) of natural gas, and store 1.6 MMbbl of oil. It also will be able to inject 180,000 b/d of water.
Well 3-SPS-69, the first to go into operation, has a production potential of 32,000 b/d. The oil produced in Sapinhoá field is 29° API on average and is to be offloaded by tankers.
The portion of the gas not used for reinjection into the field will flow through the Sapinhoá-Lula-Mexilhão gas pipeline to the Monteiro Lobato Gas Treatment Unit in Caraguatatuba, on the coast of São Paulo state. FPSO Cidade de Ilhabela will be connected to nine production wells and seven injection wells. Peak production is expected in the second half of 2015.
Production started from Sapinhoá field in January 2013 by interconnecting well 1-SPS-55 to FPSO Cidade de São Paulo (Sapinhoá Pilot), with a production capacity of up to 120,000 b/d.
Sapinhoá field is operated by Petrobras (45%), in partnership with BG E&P Brasil Ltda (30%) and Repsol Sinopec S.A. (25%).