Abstract: A subsea production system for producing petroleum by artificial elevation, assisted by submersible centrifugal pumps (SCPs) upstream of the WCT and installed on the seabed, includes a pumping module having one of more SCPs, installed in series or in parallel, with an inclination of up to 85 degrees in relation to the vertical, the module being connectible to a flow base to permit the “bypass” of production and wherein the pumping module and the flow base may be linked to installation and recovery by cable. A production line is connected upstream to the pumping module upstream and another production line is connected downstream to the pumping module. A method of installing the system in a new wellhead is described, as well as a method for installing the system in an existing wellhead. The uses of the subsea production system for boosting multiphase flow, injection of water in an injector well and the transfer of oil between two points of collection are also described.