Enhanced oil recovery by Nanogeoscience approach

2016 Fiscal Year Final Research Report

• Project/Area Number: 24246148
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Earth system and resources enginnering
• Research Institution: Kyoto University
• Principal Investigator: Matsuoka Toshifumi 京都大学, インフラシステムマネジメント研究拠点ユニット, 研究員 (10303851)
• Co-Investigator(Kenkyū-buntansha): 辻 健 九州大学, 学内共同利用施設等, 准教授 (60455491) ; Liang Yunfeng 京都大学, 工学(系)研究科(研究院), 助教 (70565522)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: ナノジオサイエンス / 石油増進回収 / Spring-8 / アスファルテン / 格子ボルツマン法 / ディジタルオイル / 低濃度塩水攻法 / CO2-EOR

Outline of Final Research Achievements

We have established the concept of digital oil which is a molecular model of crude oil using the Nanogeoscience. Applying this to domestic oil fields, we proposed countermeasures against the aggregation problem of asphaltenes. Also we built a digital oil model for heavy oil and estimated the change in viscosity due to temperature and pressure variation. In order to elucidate the oil recovery mechanism of the low salinity water EOR, we measured the two-phase interface phenomena at mineral surface of muscovite and oleic acid before and after the brine water injection by using the X-ray CTR scattering method at Spring-8. It was found that adsorption of oleic acid was relieved after saline water injection. Analysis of electron density distribution in the vicinity of the interface by using molecular dynamics, we investigated on accumulation and adsorption of liquid phase molecules near this interface.

Free Research Field

石油開発工学