Crude oil coming up from the reservoir must be separated from the associated gas and water, and have its pressure and temperature reduced through a multistage process. Only then can it be stored in the big cells in the gravity base structure (GBS) for each platform. Processing the oil is intended to stabilise it enough to allow tanker transport.
More about process
Utilities are a collective term for the systems required to operate a platform, other than those directly involved in oil and gas production. This definition embraces direct support for the production process, general power generation facilities, and systems which sustain life and work on the installation. The latter include safety, process control, heating and ventilation, and communication equipment.