SYSTEM OF PREPARATION AND TRANSPORTATION OF HIGH-VISCOSITY OIL (OPTIONS) Russian patent published in 2018 - IPC F17D1/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil transport and can be used to prepare and transport high viscosity oil in the petroleum industry. Three variants of the system are proposed, including three-phase separators, a multiphase pump station, gas preparation unit, booster pump stations with track oil heaters or without them, equipped with blocks of oil degassing, fuel gas preparation, generation of electrical and heat energy, heating and pumping of oil, as well as an oil stabilization unit or an end separation plant. Second option is distinguished by the installation after the three-phase separator of the pump of the fractionation unit, and the third option is the pump, the electric dehydrators and the thermal pre-treatment unit of oil. When the first variant of the system is operating, the oil is separated to produce gas, some of which, after preparation, is supplied for own consumption, and the unused portion – to a multi-phase pumping station, formation water and dehydrated oil, which, in combination with an unused portion of the gas by means of a multi-phase pumping station, after stabilization in the oil stabilization unit or the end separation plant, is fed to the main pipeline. Booster pump station is installed in the dehydrated oil supply line, in the degassing unit of which oil is partially degassed to produce gas supplied to the fuel gas preparation unit, from which the fuel gas is directed to the electric and heat energy generation unit from which electric power and / or heat is directed to the heating and pumping unit, by means of which partially degassed oil is heated and / or pumped prior to the stabilization of the oil or the end separation unit. Operation of the second variant of the system is characterized in that the dehydrated oil is fractionated after separation to obtain a circulating light fraction directed to the well production line. In operation of the third variant of the system, the dehydrated oil, after separation by a pump, is fed to an electric dehydrator, and then to a thermal pre-training, where the oil is subjected to thermal conversion to obtain a circulating light fraction directed to the well production line.

EFFECT: reduction of associated petroleum gas losses and reduction of oil transportation costs.

3 cl, 3 dwg