STABILIZATION AND REMOTE RECOVERY OF ACID GAS FRACTIONS FROM SOUR WELLSITE GAS

摘要

A method for the recovery of hydrogen sulphide and other acid gas fractions from sour wellsite gas in hydrocarbon production is provided. The selected acid gas fractions are absorbed into a noncorrosive and transportable solvent solution at the wellsite, the rich solvent solution being transported to a central plant location where it is desorbed from the solvent solution for further handling or processing. The lean solvent solution can then be recycled. Multiple acid gas fractions could be recovered from the sour gas in question using a single appropriate solvent solution. Carbon dioxide could be absorbed and desorbed at the wellsite rather than at the central plant location. Clean gas is yielded at the natural gas into solvent wellsite for downstream processing or sale.