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Experimental study of fracture tip screen-out with aid of X-ray CT considering its application to fracture control

Research Project

Project/Area Number 16K14520
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Earth system and resources engineering
Research InstitutionTohoku University

Principal Investigator

ITO Takatoshi  東北大学, 流体科学研究所, 教授 (00184664)

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
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
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)
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
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.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (2 results)

All 2018 2017

All Presentation (2 results)

  • [Presentation] CTスキャナを用いた室内実験によるスクリーンアウト現象の検討2018

    • Author(s)
      吉田日向, 伊藤高敏, 山本晃司, 土屋慶洋
    • Organizer
      石油技術協会 平成30 年度春季講演会, 新潟
    • Related Report
      2017 Annual Research Report
  • [Presentation] CTスキャナを用いたティップスクリーンアウト現象の可視化の試み2017

    • Author(s)
      吉田日向,伊藤高敏
    • Organizer
      石油技術協会春季講演会
    • Place of Presentation
      東京 国立オリンピック記念青少年総合センター
    • Year and Date
      2017-06-14
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2019-03-29  

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