Clarifying the mechanism of enhanced shale gas recovery by displacement of gas injection

• Project/Area Number: 15K06637
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Earth system and resources engineering
• Research Institution: Public Works Research Institute (2016-2017); Akita University (2015)
• Principal Investigator: Kyosuke Onishi 国立研究開発法人土木研究所, 土木研究所(つくば中央研究所), 研究員 (20402969)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: シェールガス / 吸着 / 頁岩 / 細孔径分布 / ガス吸着量 / 増進回収 / 孔隙率 / 浸透率 / 水銀孔隙率 / 全有機炭素 / 比表面積

Outline of Final Research Achievements

The objective of this study is to clarify the relationships between maximum amount of adsorbed gas and physical properties by the analysis of shale samples. The final goal of this study is to clarify the mechanism of shale gas recovery by displacement of gas injection. We selected five siliceous shale samples of Onnagawa formation. The amount of gas adsorption was measured by two ways in the condition of high pressure and low pressure. Distributions of radius of micro pores were measured by a mercury porosimeter and total organic carbon was measured by Rock Eval. Fine correlation is found in between ultra-micro pores in micro pores and adsorption capacity, which indicates micro pores influence the amount of gas adsorption in high pressure. We cannot find any relationships between total organic carbon and adsorption capacity.

Research Products

• [Presentation] 珪質頁岩の微細孔隙が高圧ガス吸着能力に与える影響 (2016)
  • Author(s): 広瀬暉二，尾西恭亮，阿部一徳，小助川洋幸，藤井光
  • Organizer: 石油技術協会
  • Place of Presentation: 秋田市