{"@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/1363670318611352192.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1021/acs.energyfuels.6b03143"}},{"identifier":{"@type":"URI","@value":"https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.6b03143"}}],"dc:title":[{"@value":"Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production"}],"description":[{"notation":[{"@value":"Marine methane hydrate in sands has huge potential as an unconventional gas resource; however, no field test of their production potential had been conducted. Here, we report the world’s first offshore methane hydrate production test conducted at the eastern Nankai Trough and show key findings toward future commercial production. Geological analysis indicates that hydrate saturation reaches 80% and permeability in the presence of hydrate ranges from 0.01 to 10 mdarcies. Permeable (1–10 mdarcies) highly hydrate-saturated layers enable depressurization-induced gas production of approximately 20,000 Sm3/D with water of 200 m3/D. Numerical analysis reveals that the dissociation zone expands laterally 25 m at the front after 6 days. Gas rate is expected to increase with time, owing to the expansion of the dissociation zone. It is found that permeable highly hydrate-saturated layers increase the gas–water ratio of the production fluid. The identification of such layers is critically important to increase the en..."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670318611352196","@type":"Researcher","foaf:name":[{"@value":"Yoshihiro Konno"}],"jpcoar:affiliationName":[{"@value":"Methane\rHydrate Production Technology Research Group, Research Institute of\rEnergy Frontier, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-Ku, Sapporo 062-8517, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352192","@type":"Researcher","foaf:name":[{"@value":"Tetsuya Fujii"}],"jpcoar:affiliationName":[{"@value":"Methane Hydrate Research & Development Division, Japan Oil, Gas and Metals National Corporation (JOGMEC), 1-2-2 Hamada, Mihama-ku, Chiba-city, Chiba 261-0025, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352193","@type":"Researcher","foaf:name":[{"@value":"Akihiko Sato"}],"jpcoar:affiliationName":[{"@value":"Petroleum Engineering & Consulting Department, Japan Oil Engineering Co., Ltd., Kachidoki Sun-Square, 1-7-3 Kachidoki, Chuo-Ku, Tokyo 104-0054, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352199","@type":"Researcher","foaf:name":[{"@value":"Koya Akamine"}],"jpcoar:affiliationName":[{"@value":"Petroleum Engineering & Consulting Department, Japan Oil Engineering Co., Ltd., Kachidoki Sun-Square, 1-7-3 Kachidoki, Chuo-Ku, Tokyo 104-0054, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352195","@type":"Researcher","foaf:name":[{"@value":"Motoyoshi Naiki"}],"jpcoar:affiliationName":[{"@value":"Petroleum Engineering & Consulting Department, Japan Oil Engineering Co., Ltd., Kachidoki Sun-Square, 1-7-3 Kachidoki, Chuo-Ku, Tokyo 104-0054, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352197","@type":"Researcher","foaf:name":[{"@value":"Yoshihiro Masuda"}],"jpcoar:affiliationName":[{"@value":"Research\rinto Artifacts, Center for Engineering, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8568, Japan"},{"@value":"Department\rof System Innovation, School of Engineering, The University of Tokyo, 7-3-1 Hongo,  Bunkyo-ku, Tokyo 113-8656, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352198","@type":"Researcher","foaf:name":[{"@value":"Koji Yamamoto"}],"jpcoar:affiliationName":[{"@value":"Methane Hydrate Research & Development Division, Japan Oil, Gas and Metals National Corporation (JOGMEC), 1-2-2 Hamada, Mihama-ku, Chiba-city, Chiba 261-0025, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318611352194","@type":"Researcher","foaf:name":[{"@value":"Jiro Nagao"}],"jpcoar:affiliationName":[{"@value":"Methane\rHydrate Production Technology Research Group, Research Institute of\rEnergy Frontier, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-Ku, Sapporo 062-8517, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"08870624"},{"@type":"EISSN","@value":"15205029"}],"prism:publicationName":[{"@value":"Energy & Fuels"}],"dc:publisher":[{"@value":"American Chemical Society (ACS)"}],"prism:publicationDate":"2017-02-14","prism:volume":"31","prism:number":"3","prism:startingPage":"2607","prism:endingPage":"2616"},"reviewed":"false","url":[{"@id":"https://pubs.acs.org/doi/pdf/10.1021/acs.energyfuels.6b03143"}],"createdAt":"2017-02-01","modifiedAt":"2023-04-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050303321522184832","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Electrical resistivity tomography combined with seismic data estimates heterogeneous distribution of near-seafloor concentrated gas hydrates within gas chimneys"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232125825536","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Enhancement of gas production from methane hydrate reservoirs by the combination of hydraulic fracturing and depressurization method"}]},{"@id":"https://cir.nii.ac.jp/crid/1360013168736138240","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Effect of gas generation by chemical reaction on viscous fingering in a Hele–Shaw cell"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283690887635456","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Construction and simulation of reservoir scale layered model for production and utilization of methane hydrate: The case of Nankai Trough Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283691004766208","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Production behavior and numerical analysis for 2017 methane hydrate extraction test of Shenhu, South China Sea"}]},{"@id":"https://cir.nii.ac.jp/crid/1360298757184268544","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"X-ray Imaging of Clathrate Hydrates as Gas Storage Materials: Absorption Contrast of Low-Density and Low-Absorption Materials Using Energy-Dependent X-ray Computed Tomography"}]},{"@id":"https://cir.nii.ac.jp/crid/1360306906097919616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Review of permeability analysis methods in gas hydrate-bearing natural sediments with high permeability 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reactivity"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205282179072","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"メタンハイドレート堆積層および坑井の詳細モデル化に基づく坑井周りの変形・応力解析"},{"@language":"en","@value":"Numerical Analysis for Deformation and Stress Distribution around Production Well based on Detailed Modeling for Methane Hydrate Bearing Sediment and Well Structure"},{"@value":"メタンハイドレート堆積層および坑井の詳細モデル化に基づく坑井周りの変形・応力解析 : メタンハイドレート貯留層の地層変形挙動予測に関する研究(第2報)"},{"@language":"ja-Kana","@value":"メタンハイドレート タイセキソウ オヨビ コウセイ ノ ショウサイ モデルカ ニ モトズク コウセイ マワリ ノ ヘンケイ ・ オウリョク カイセキ : メタンハイドレート チョリュウソウ ノ チソウ ヘンケイ キョドウ ヨソク ニ カンスル ケンキュウ(ダイ2ホウ)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390009483112552704","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Current status and future perspectives of methane hydrate production R&D from viewpoints of reservoir engineer"},{"@language":"ja","@value":"油層エンジニアから見たメタンハイドレート研究開発の現状と今後"},{"@value":"講演 油層エンジニアから見たメタンハイドレート研究開発の現状と今後"},{"@language":"ja-Kana","@value":"コウエン ユソウ エンジニア カラ ミタ メタンハイドレート ケンキュウ カイハツ ノ ゲンジョウ ト コンゴ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390010292756684544","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Unsupervised learning for classification of flow regime in high-pressure gas-liquid two-phase flow including transition region"},{"@language":"ja","@value":"教師なし学習による高圧気液二相流の遷移領域を含む流動様式の分類"}]},{"@id":"https://cir.nii.ac.jp/crid/1390287907270816768","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Methane Hydrate in Marine Sands: Its Reservoir Properties, Gas Production Behaviors, and Enhanced Recovery Methods"},{"@language":"ja","@value":"海洋砂層中のメタンハイドレート—その貯留層特性，ガス生産挙動，増進回収法—"}]},{"@id":"https://cir.nii.ac.jp/crid/1390291767485076864","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Development of DEM Model of Methane-Hydrate Bearing Sand Layer"},{"@language":"ja","@value":"離散要素法を用いたメタンハイドレートを胚胎する砂層モデルの開発"},{"@language":"ja-Kana","@value":"リサン ヨウソホウ オ モチイタ メタンハイドレート オ ハイタイスル サソウ モデル ノ カイハツ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390574445219714304","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Current perspectives on pressure-core analysis technology for gas-hydrate-bearing sediments"},{"@language":"ja","@value":"ガスハイドレート胚胎堆積物を対象とした圧力コア解析技術の展望"}]},{"@id":"https://cir.nii.ac.jp/crid/1390845713057107328","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"日本海東縁部の表層型ガスハイドレート賦存域における海底表層堆積物の土質特性"},{"@language":"en","@value":"Soil properties of subsurface sediments collected from shallow gas hydrate province in the eastern margin of the Japan Sea"},{"@language":"ja-Kana","@value":"ニホンカイ トウエンブ ノ ヒョウソウガタ ガスハイドレートフゾンイキ ニ オケル カイテイ ヒョウソウ タイセキブツ ノ ドシツ トクセイ"},{"@value":"Soil properties of subsurface sediments collected from shallow gas hydrate province in the eastern margin of the Japan Sea (in Japanese with English abstract)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390849931327881728","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Evaluation of the effect of enhanced gas recovery from a methane hydrate reservoir through the utilization of <i>in-situ</i> heat generation by acid injection"},{"@language":"ja","@value":"酸注入による原位置発熱を利用したメタンハイドレート貯留層からの ガス増進回収効果の評価"},{"@language":"ja-Kana","@value":"サン チュウニュウ ニ ヨル ゲン イチ ハツネツ オ リヨウ シタ メタンハイドレート チョリュウソウ カラ ノ ガス ゾウシン カイシュウ コウカ ノ 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