ASSOCIATED PETROLEUM GAS UTILISATION PLANT Russian patent published in 2014 - IPC B01D53/00 E21B43/34 

FIELD: oil and gas industry.

SUBSTANCE: plant comprises raw stock feed pipeline, a separation unit that consists of at least two separation stages, and each stage has an inlet for raw stock and discharges for associated petroleum gas and hydrocarbon mixture with water as well as discharge for oil-water emulsion, at least two stages of gas compression with discharges for gas and liquid hydrocarbons released during gas compression, at that discharges for associated petroleum of separation stages gas are connected to the compression stages by the respective pressure while gas discharge at each compression stage is connected to discharge of associated petroleum gas at the previous separation stage, a gas membrane separation unit with discharges for pretreated gas and permeate connected to gas discharge at the first gas compression stage and a hydrocarbon stabilisation unit with gas discharges for stabilisation and liquid hydrocarbons, which is connected to the discharge of liquid hydrocarbons released at gas compression stages.

EFFECT: invention provides complete utilisation of associated petroleum gas, optimisation of the plant process flow and reduction of capital and operational costs.

27 cl, 3 dwg