The world’s deepest subsea tree was successfully installed offshore Brazil at a water depth of 1027 m, finally breaking the "psychological" barrier of 1000 m. Actually, subsea completion technology has reached a point where the fundamental question no longer is whether fields located at water depths > 1000 m can be profitably completed; is there a better and safer way to do it is now the key issue. Petrobras has pursued an aggressive strategy in R and D concept evaluations and various field studies aiming at a continuous decrease in both capital and operational expenditures. This paper describes the major subsea completion achievements resulting from this great effort, which include implementation of a standardization program; sharp reduction of subsea completion and drilling time; a new flowline connection method that combines the advantages of lay-away and pull-in methods; design and future installation of the world’s first subsea electrical submersible pump; and completion equipment simplification and resulting cost reduction. Also addressed are the key safety aspects related to deepwater completions and the equipment design improvement necessary to conduct those operations safely.