Japan Petroleum Exploration patented a method for underground storage of CO2 gas and enhanced oil recovery. The process involves injecting high-pressure water jets and fine bubbles of injection gas into permeable formations like oil reservoirs through a specialized device. GlobalData’s report on Japan Petroleum Exploration gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Japan Petroleum Exploration, Syngas production was a key innovation area identified from patents. Japan Petroleum Exploration's grant share as of February 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.

Underground storage of co2 gas and enhanced oil recovery

Source: United States Patent and Trademark Office (USPTO). Credit: Japan Petroleum Exploration Co Ltd

A recently granted patent (Publication Number: US11873703B2) discloses a method for underground storage of injection gas containing CO2 gas and enhanced oil recovery. The method involves utilizing an injection well with two flow paths - a water flow path and a gas flow path, along with a fine bubble-generating device positioned at the lower ends of these paths. The process includes supplying injection water through the water flow path, jetting a high-pressure water jet that suctions injection gas through the gas flow path into the fine bubble-generating device, and allowing a gas-liquid mixed fluid containing fine bubbles to penetrate into a permeable formation like an oil reservoir.

Furthermore, the patent claims specify that the fine bubble-generating device can be placed either in a wellhead or on the surface. This flexibility in placement allows for customization based on the specific requirements of the underground storage and enhanced oil recovery process. By incorporating this method, the patent aims to optimize the injection of gas containing CO2 for storage purposes while simultaneously enhancing oil recovery from reservoirs. The innovative approach outlined in the patent showcases a novel technique that could potentially revolutionize underground storage practices and oil recovery processes in the industry.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.