書誌事項
- タイトル別名
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- Basic Study on the Frictional Strength between the Casing and Cement in a Methane Hydrate Production Well
- メタンハイドレート生産井におけるケーシング-セメント間の摩擦強度に関する基礎的研究 : メタンハイドレート開発における坑井の安定性に関する基礎的研究(第1報)
- メタンハイドレート セイサンイ ニ オケル ケーシング-セメント カン ノ マサツ キョウド ニ カンスル キソテキ ケンキュウ : メタンハイドレート カイハツ ニ オケル コウセイ ノ アンテイセイ ニ カンスル キソテキ ケンキュウ(ダイ1ポウ)
- Basic Studies of Well Stability for Methane Hydrate Development (Part 1)
- メタンハイドレート開発における坑井の安定性に関する基礎的研究(第1報)
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抄録
In a project of methane gas extraction from a methane hydrate (MH) bearing sand formation in marine sediments, a production well is drilled into the sea floor from a marine platform. The depressurization method has been proposed for extracting methane gas. During the depressurization operation, sediment deformation and consolidation occurs because of MH dissociation and increases in the effective stress. This ingenerates friction on the production well, and shear failure may occur. These problems may cause gas leakage and depressurization impediment. Therefore, to ensure reliability of the well, it is very important to understand the frictional strength between the well and the sediments. The well consists of casing and cement, and it has three interface types: casing-cement, casing-sediment (sand or clay), and cement-sediment. In this study, we prepared simulated interface samples using steel rods (surface roughness: Rz = 2.7, 14.7, and 30.0 μm) and Class G cement. Moreover, a pushout test was carried out on these samples under different effective confining pressures. The test results showed that the maximum friction is not affected by the water-cement ratio of the cement, but it tended to increase depending on the effective confining pressure and the surface roughness. From these results, we expressed the maximum friction as a function of the effective confining pressure and the surface roughness.
収録刊行物
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- 資源と素材
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資源と素材 129 (4), 116-123, 2013
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390001205280181120
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- NII論文ID
- 10031160264
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- NII書誌ID
- AA12188381
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- COI
- 1:CAS:528:DC%2BC3sXhtFOlsLfL
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- ISSN
- 18840450
- 18816118
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- NDL書誌ID
- 024712969
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可