Disclosed is an offshore facility for producing a liquefied natural gas by using an accompanying gas. According to an embodiment of the present invention, the offshore facility comprises: a crude oil production device which includes a crude oil treatment device for producing oil by refining crude oil collected from a sea well, and includes a gas re-injection device for compressing an accompanying gas separated from a crude oil refining step to be re-injected to a reservoir; and a liquefied natural gas producing offshore facility which receives a feed gas including at least a part of an accompanying gas from a crude oil producing offshore facility, and processes and liquefies the feed gas to produce a liquefied natural gas. The crude oil producing offshore facility comprises a feed gas supply unit which recovers a back flow gas generated by reverse-flowing of an injection gas compressed by the gas re-injection device, and generates a feed gas by using the back flow gas. According to an embodiment of the present invention, in an offshore facility for re-injecting a gas (injected gas) compressed by an accompanying gas into a reservoir, a gas re-injected into the reservoir can be reversely flowed and recovered. By using the recovered back-flow gas, a liquefied natural gas is produced. Thus, productivity of the liquefied natural gas using the accompanying gas can be improved.

    수반 가스를 이용하여 액화천연가스를 생산하는 해양 설비가 개시된다. 본 발명의 실시 예에 따른 해양 설비는 해저웰로부터 수집된 원유를 정유하여 오일을 생산하는 원유 처리 장치와, 원유 정유 과정에서 분리된 수반 가스를 압축하여 리저버(reservoir)로 재주입시키는 가스 재주입 장치를 갖는 원유 생산 해양 설비; 및 원유 생산 해양 설비로부터 수반 가스 중의 적어도 일부를 포함하는 피드 가스를 공급받고, 피드 가스를 처리하고 액화하여 액화천연가스를 생산하는 액화천연가스 생산 해양 설비를 포함한다. 원유 생산 해양 설비는 가스 재주입 장치에 의해 압축된 주입 가스가 역류되어 형성되는 백플로우 가스를 회수하고, 백플로우 가스를 이용하여 피드 가스를 생성하는 피드가스 공급부를 구비한다. 본 발명의 실시 예에 의하면, 수반 가스를 압축한 가스(주입 가스)를 리저버로 재주입하는 해양 설비에 있어서, 리저버로 재주입된 가스가 역류되어 회수될 수 있도록 구성하고, 회수된 백플로우(back-flow) 가스를 이용하여 액화천연가스를 생산함으로써, 수반 가스를 이용한 액화천연가스의 생산성을 향상시킬 수 있다.


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    Title :

    OFFSHORE FACILITY FLOATING PRODUCTION STORAGE OFFLOADING FACILITY AND METHOD OF GENERATING LIQUEFIED NATURAL GAS


    Additional title:

    해양 설비, 부유식 원유 생산 설비 및 액화천연가스 생성 방법



    Publication date :

    2017-12-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / F25J LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT , Verflüssigen, Verfestigen oder Trennen von Gasen oder Gasgemischen durch Druck- und Kältebehandlung




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