Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 9, 2021
Patent Application Number
16723252
Date Filed
December 20, 2019
Patent Primary Examiner
Patent abstract
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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