Since the first Intelligent Completion installed 20 years ago, the systems have become more and more complex in order to enable the results in terms of productivity and optimization, allowing real time monitoring and management of each zone in the well in an independent way. Accompanying the search for higher efficiency of the system is reliability assurance, one of the most important themes for the oil industry. Producers and injectors wells have been completed with the ultimate technology to achieve the best performance for each zone, allowing management optimization of the reservoirs, improving the reliability of the systems, reducing costs with workovers, therefore improving the return on investment over the life of the field. Currently, Intelligent Completion can be found widely in production areas around the world, from mature land to ultra-deepwater wells like those in the Brazilian Pre-Salt. Each scenario has its challenges, for example the Carbonates of the Pre-Salt.
Presented in this paper are the complexities and the challenges to plan and install the first Intelligent Completion in a subsea well with three producing zones in the Brazilian Pre-Salt, performed in 2015. A selective completion in three zones, comprised of feed-through packers, permanent downhole gauges in all zones, chemical injection mandrels, inflow control valves with adjustable choke, mechanical sliding sleeves and Flat Packs with hydraulic and electric lines. In addition, a downhole safety valve, Tubing Hanger (TH) with eight hydraulic penetrations and one electric, in a water depth of 2200 m. Planning and detailing were the main drivers of this big project
