The “lifecycle” of oil & gas fields
The service life of oil and gas fields is divided into different phases ranging from the discovery to the decommissioning. In each of these phases reservoir models and simulations play an important role, since these provide the basis for all investment decisions.
The development of the field until production starts is costly. The entire production is planned in detail and the production plants, infrastructure, etc are then designed and built.
The service life of the fields varies – they can usually continue producing for between 10 and 40 years. As time passes, the oil recovery often requires some additional help, such as by using water injection.
Enhanced oil recovery (EOR) methods allow oil to still be produced when conventional production technologies no longer suffice. The existing infrastructure and already developed fields can thus be commercially exploited for longer. All in all, around 50 percent of the natural oil in a reservoir can be brought to the surface in this way.