Oil production plant

An oil production plant is a facility which processes production fluids from oil wells in order to separate out key components and prepare them for export. Typical oil well production fluids are a mixture of oil, gas and produced water. An oil production plant is distinct from an oil depot, which does not have processing facilities. Oil production plant may be associated with onshore or offshore oil fields. Many permanent offshore installations have full oil production facilities. Smaller platforms and subsea wells export production fluids to the nearest production facility, which may be on a nearby offshore processing installation or an onshore terminal. The produced oil may sometimes be stabilised (a form of distillation) which reduces vapour pressure and sweetens "sour" crude oil by removing hydrogen sulphide, thereby making the crude oil suitable for storage and transport. offshore installations deliver oil and gas to onshore terminals which may further process the fluids prior to sale or delivery to oil refineries. The configuration of onshore oil production facilities depends on the size of the oil field. For simple fields comprising a single well or a few wells, an oil storage tank may be sufficient. The tank is emptied periodically by road tanker and transferred to an oil refinery. For larger production rates a rail tanker transfer facility may be appropriate. For larger fields a full three-phase processing facility is required. Three-phase separators separate the well fluids into its three constituent phases: oil, gas and produced water. Oil may be transferred by road or rail tanker or by pipeline to an oil refinery. Gas may be used on the site to run gas engines to produce electricity or can be piped to local users. Excess gas is burned in a ground flare. Produced water may be re-injected into the reservoir. See for example: Wytch Farm There is a wide variety of options for the processing of produced oil.