Yunhui Lu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Yunhui Lu has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
Haoru Chen
State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing 100083, P. R. China; School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, P. R. China
1 shared publication- Liu Yang
State Key Laboratory for Tunnel Engineering, China University of Mining & Technology, Beijing 100083, China
1 shared publication - Manchao He
China University of Mining and Technology-Beijing
1 shared publication Yuhang Dong
State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing 100083, P. R. China
1 shared publication- Zhaoyang Liu
State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing 100083, P. R. China; School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, P. R. China
1 shared publication
Latest Publications
- Open Access
- 10 September 2025
- Published by Yandy Scientific Press in Advances in Geo-Energy Research
- Vol. 18 (1) , 21-37
Investigation of conglomerate softening effect induced by supercritical CO₂-water-rock interaction via micro-scratch test
Supercritical CO₂-water-rock interactions significantly impact the mechanical integrity of heterogeneous conglomerate reservoirs, challenging their suitability for CO₂ sequestration and enhanced oil recovery. To evaluate these microscale mechanical and structural changes, this study uses a combination of micro-scratch testing, scanning electron microscopy, and nuclear magnetic resonance. The results reveal that the micro-scratch method enables the acquisition of a continuous mechanical property profile, addressing the limitation of traditional rock mechanics that only allows discrete point measurements. Importantly, the scratch failure modes significantly depend on the lithology of conglomerate reservoirs: Felsic and quartz conglomerates exhibit sharp grooves with interfacial shear failure, whereas debris-rich variants develop wavy, fragmented paths. CO₂-water exposure reduces the deformation resistance and causes fracture toughness to initially increase and then decline, with the most severe reduction observed in quartz conglomerates. The degradation of mechanical properties is mainly through mineral dissolution and increased porosity. The findings of this study offer key insights for optimizing storage and recovery strategies in complex reservoirs. Document Type: Original article Cited as: Yang, L., Liu, Z., Lu, Y., Chen, H., Dong, Y., He, M. Investigation of conglomerate softening effect induced by supercritical CO₂-water-rock interaction via micro-scratch test. Advances in Geo-Energy Research, 2025, 18(1): 21-37. https://doi.org/10.46690/ager.2025.10.03
- 10 September 2025
- Published by Yandy Scientific Press in Advances in Geo-Energy Research
- Vol. 18 (1) , 21-37
Open AccessInvestigation of conglomerate softening effect induced by supercritical CO₂-water-rock interaction via micro-scratch test
Supercritical CO₂-water-rock interactions significantly impact the mechanical integrity of heterogeneous conglomerate reservoirs, challenging their suitability for CO₂ sequestration and enhanced oil recovery. To evaluate these microscale mechanical and structural changes, this study uses a combination of micro-scratch testing, scanning electron microscopy, and nuclear magnetic resonance. The results reveal that the micro-scratch method enables the acquisition of a continuous mechanical property profile, addressing the limitation of traditional rock mechanics that only allows discrete point measurements. Importantly, the scratch failure modes significantly depend on the lithology of conglomerate reservoirs: Felsic and quartz conglomerates exhibit sharp grooves with interfacial shear failure, whereas debris-rich variants develop wavy, fragmented paths. CO₂-water exposure reduces the deformation resistance and causes fracture toughness to initially increase and then decline, with the most severe reduction observed in quartz conglomerates. The degradation of mechanical properties is mainly through mineral dissolution and increased porosity. The findings of this study offer key insights for optimizing storage and recovery strategies in complex reservoirs. Document Type: Original article Cited as: Yang, L., Liu, Z., Lu, Y., Chen, H., Dong, Y., He, M. Investigation of conglomerate softening effect induced by supercritical CO₂-water-rock interaction via micro-scratch test. Advances in Geo-Energy Research, 2025, 18(1): 21-37. https://doi.org/10.46690/ager.2025.10.03