Experimental study of fracture tip screen-out with aid of X-ray CT considering its application to fracture control
| Project/Area Number |
16K14520
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Earth system and resources engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
ITO Takatoshi 東北大学, 流体科学研究所, 教授 (00184664)
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| Research Collaborator |
YAMAMOTO KOJI 石油天然ガス・金属鉱物資源機構, 技術センター, 研究員
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 石油天然ガス開発 / フラクチャリング / スクリーンアウト / 室内実験 / X線CT / 可視化 / ティップスクリーンアウト / ジオメカニクス |
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| Outline of Final Research Achievements |
We succeeded in reproducing the screenout phenomenon which is a problem in the fracturing technique indispensable for oil and natural gas production by laboratory experiments and visualizing the fracture behavior with the CT scanner. To this end, by using a soft material, fracture has become possible to open to a size that can be visualized even with a small test specimen, and by using a pressure vessel that well combines CFRP and engineering plastic with excellent X-ray transparency, it has become possible to apply any axisymmetric compressive stresses to a cylindrical specimen. Moreover, it has been found that the fluid to which barium sulfate was added is effective for observation of flow and clogging at fracture tip.
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Report
(3 results)
Research Products
(2 results)
