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

2017 Fiscal Year Final Research Report

• 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
• Keywords: シェールガス / 吸着 / 頁岩 / 細孔径分布

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.

Free Research Field

油層工学