{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1040282256931029760.json","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"17H01291"},{"@type":"JGN","@value":"JP17H01291"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17H01291/"}],"jpcoar:awardTitle":[{"@language":"ja","@value":"非構造性帯水層への炭酸ガス地中貯留実現のための研究"},{"@language":"en","@value":"Research for realization of carbon dioxide capture and storage in non-structural aquifer"}],"field":[{"keyword":[{"language":"ja","textList":["理工系","工学","土木工学","地盤工学"]},{"language":"en","textList":["Science and Engineering","Engineering","Civil engineering","Geotechnical engineering"]}]}],"dc:language":"ja","description":[{"type":"outline_of_research_achievement","notation":[{"@language":"ja","@value":"本研究では，非構造性帯水層として考えられる堆積岩を対象として，飽和岩石内でのCO2の流動特性，貯留特性を明らかにするための室内実験装置を開発し，室内実験からそのメカニズムを明らかにした。そして，岩石内の貯留の新しい透過・貯留モデルを構築し，そのモデルを実装した数値シミュレーションの開発を行った。その結果，難透過性砂岩中のCO2の透過挙動は，選択的経路をとりながら複数回拡幅していくこと，CO2は，一様に界面を維持しながら岩石内を侵入するのではなく，分岐しながら岩石内を侵入していくこと，CO2が貯留された岩石は，ガストラップによりCO2飽和度分布が不均一になることを明らかにした。"},{"@language":"en","@value":"In this study, we developed a laboratory test apparatus to clarify the flow and storage characteristics of supercritical CO2 in low permeable sandstone. And the mechanism of flow and storage in low permeable sandstone has been clarified. Furthermore, we constructed a new flow/storage model that considers the mechanism of supercritical CO2 in rocks, and developed a numerical simulation has been conducted.\nAs a result, it confirms that CO2 penetrates low permeable sandstone while branching. It was found that residual gas trapping is the dominant storage mechanism for CO2 geological sequestration in rocks with low permeability.  In addition, it is shown that low permeability sandstone is suitable for Deep Saline Aquifer (DSA) when caprock is not required because it can store a large amount of CO2 over a long period of time through residual gas trapping."}]},{"type":"significance_of_research_achievement","notation":[{"@language":"ja","@value":"CO2の地中貯留・固定は，構造トラップ，残留ガス，吸着，溶解といったCO2地中固定の深化過程があり，これまで，CO2貯留に関する様々な実験的研究が行われているが，非構造性帯水層を貯留層としたCO2の挙動を解明することができた。 特にCO2の透過挙動が選択的な透過挙動が生じること，そして貯留されたCO2が岩石中にガストラップされることを明らかににすることができたことが大きな学術的意義である。また，この結果は，構造トラップに依存しない我が国の地質環境に応じた独自のCO2貯留・固定技術を確立することができる可能性を示すことにつながり，大きな社会的意義があると考えられる。"}]}],"researcher":[{"@id":"https://cir.nii.ac.jp/crid/1420001326229261184","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"20301343"},{"@type":"NRID","@value":"1000020301343"},{"@type":"ORCID","@value":"0000-0001-5270-7292"},{"@type":"NRID","@value":"9000411648570"},{"@type":"NRID","@value":"9000283700450"},{"@type":"NRID","@value":"9000398169647"},{"@type":"NRID","@value":"9000399803403"},{"@type":"NRID","@value":"9000408953392"},{"@type":"NRID","@value":"9000258421885"},{"@type":"NRID","@value":"9000288834918"},{"@type":"NRID","@value":"9000264869087"},{"@type":"NRID","@value":"9000264268979"},{"@type":"NRID","@value":"9000410998597"},{"@type":"NRID","@value":"9000411806354"},{"@type":"NRID","@value":"9000414254252"},{"@type":"NRID","@value":"9000260206999"},{"@type":"NRID","@value":"9000326257950"},{"@type":"NRID","@value":"9000397958376"},{"@type":"NRID","@value":"9000412097417"},{"@type":"NRID","@value":"9000014551177"},{"@type":"NRID","@value":"9000410901425"},{"@type":"NRID","@value":"9000404159149"},{"@type":"NRID","@value":"9000010591525"},{"@type":"NRID","@value":"9000255830089"},{"@type":"NRID","@value":"9000283700448"},{"@type":"NRID","@value":"9000254314459"},{"@type":"NRID","@value":"9000256436693"},{"@type":"NRID","@value":"9000258421949"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0067441"}],"foaf:name":[{"@language":"ja","@value":"三谷 泰浩"},{"@language":"en","@value":"Mitani Yasuhiro"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"九州大学"}],"role":"principal_investigator"},{"@id":"https://cir.nii.ac.jp/crid/1420845751147342208","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10393711"},{"@type":"NRID","@value":"1000010393711"}],"foaf:name":[{"@language":"ja","@value":"増岡 健太郎"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"大成建設株式会社技術センター"}],"role":"co_investigator_buntan"},{"@id":"https://cir.nii.ac.jp/crid/1420564276170668544","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10417090"},{"@type":"NRID","@value":"1000010417090"},{"@type":"NRID","@value":"9000008093289"},{"@type":"NRID","@value":"9000243771778"},{"@type":"NRID","@value":"9000280539252"},{"@type":"NRID","@value":"9000376926895"},{"@type":"NRID","@value":"9000003729819"}],"foaf:name":[{"@language":"ja","@value":"山本 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圭吾"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"九州大学"}],"role":"co_investigator_buntan"},{"@id":"https://cir.nii.ac.jp/crid/1420001326214953344","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"90380576"},{"@type":"NRID","@value":"1000090380576"},{"@type":"NRID","@value":"9000003836544"},{"@type":"NRID","@value":"9000283700451"},{"@type":"NRID","@value":"9000410998598"},{"@type":"NRID","@value":"9000260207001"},{"@type":"NRID","@value":"9000414533573"},{"@type":"NRID","@value":"9000000745825"},{"@type":"NRID","@value":"9000414560776"},{"@type":"NRID","@value":"9000283700447"},{"@type":"NRID","@value":"9000414529137"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/hiroikemi"}],"foaf:name":[{"@language":"ja","@value":"池見 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