Joint modeling of pressure propagation and advection to develop a multi-purpose simulator

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K05402
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 31020:Earth resource engineering, Energy sciences-related
• Research Institution: Kyushu University
• Principal Investigator: Matsumoto Mitsuo 九州大学, 工学研究院, 助教 (60842060)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 貯留層シミュレーション / 圧力遷移試験 / トレーサー試験

Outline of Final Research Achievements

This study presented and validated a novel perspective for improving the understanding of subsurface permeable structures by jointly diagnosing the responses of conventional pressure transient and tracer testing: the pressure and tracer responses individually yielded apparent porosity-thickness products. The idea was quantitatively validated using a laboratory experiment and numerical simulation based on the discrete fracture network model, which was capable of faithfully reproducing subsurface fracture distribution. Finally, an extended approach and its potential applications were presented by estimating the accuracy of subsurface permeable structures assumed in simulation models.

Free Research Field

流体資源工学

Academic Significance and Societal Importance of the Research Achievements

本研究が示し検証したアイディアは、地下流体の流動の効果的なキャラクタライズの方法を提供することで、地下流体を利活用する幅広い理工学の問題への適用可能性を秘めている。特に本研究が着目した流体資源（貯留層）の調査開発においては、その各段階における貯留層シミュレーションモデルの正確さの評価を通じてプロジェクトの意思決定に有益な情報を与えるほか、地球物理学的な探査手法との併用により、開口性断裂の発見確率の向上にも寄与できると期待される。