Japan Oil, Gas and Metals National Corporation

Toshiro Hata

Koji Yamamoto

Yurika Takahashi

Taku Oshima

Jun Yoneda

A hydrocarbon recovery method for recovering a production fluid containing hydrocarbons from a production well provided in the ground in which Type 1 microorganisms that produce a biological membrane (biofilm) and Type 2 microorganisms that produce carbon dioxide for promoting deposition of calcium carbonate exist, the hydrocarbon recovery method includes injecting, into the production well, a culture medium for increasing the Type 1 microorganisms; injecting, into the production well, a composition used for the Type 2 microorganisms to produce carbon dioxide, decompressing an inside of the production well after the culture medium and the composition are injected, and recovering the hydrocarbons in a state where the inside of the production well is decompressed.

Hydrocarbon recovery method and hydrocarbon recovery system

A hydrocarbon recovery method for recovering a production fluid containing hydrocarbons from a production well provided in the seabed in which microorganisms that produce carbon dioxide or sulfate ions for promoting a deposition of calcium carbonate exist, the method includes: an injecting process of injecting, into the production well, a composition used for producing carbon dioxide or sulfate ions by the microorganisms; a decompressing process of decompressing an inside of the production well after the composition is injected; and a recovering process of recovering the hydrocarbons in a state in which the inside of the production well is decompressed.

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Izumi, Japan

Toshiro Hata