Unmanned treatment system and treatment method for removing acid gas in oil field

The invention relates to an unmanned treatment system and method for removing acid gas in an oil field. The system comprises an oil-gas gathering and transportation treatment unit, the oil-gas gathering and transportation processing unit comprises an oil nozzle, a multi-way valve and a separator which are sequentially connected in series, the separator is connected with an efflux pump and a torch liquid separation tank through pipelines, the efflux pump is connected with a subsea pipeline, the torch liquid separation tank is connected with a torch through a gas pipeline, and the oil nozzle is connected with an outlet of an oil well logistics pipeline. The oil-gas gathering and transportation processing unit carries out gas-liquid separation on oil field produced liquid, acid gas in the oil field produced liquid is removed, the risk that acid media in the oil field produced liquid corrode subsea pipelines and pipelines and equipment of a downstream center platform is avoided, the frequency of anti-corrosion op