METHOD FOR PREPARATION OF ASSOCIATED PETROLEUM GAS Russian patent published in 2016 - IPC F25J3/06 

FIELD: gas industry.

SUBSTANCE: invention relates to methods of preparing hydrocarbon gases. Method for preparation of associated oil gas comprises a gas compression, liquid hydrocarbons cooling with stabilization gas under dephlegmation conditions to produce compressed gas and reflux. Reflux is stabilized by heating liquid hydrocarbons to produce condensate and stabilization gas. Gas is premixed with weathering gas. Condensate is additionally separated to produce weathering gas and condensate. Compressed gas is additionally compressed and cooled under dephlegmation conditions to produce propane-butane fraction and conditioned gas. Temperature of cooling liquid hydrocarbons is set depending on required standards of propane and butane content in the propane-butane fraction. Before one of the compression stages gas drying and/or its cleaning from hydrogen sulphide and mercaptans are performed.

EFFECT: technical result is higher conditioned gas yield, producing condensate of standard quality, as well as expanded range of products.

1 cl, 1 dwg