In-situ CO2 generation for EOR by using urea as a gas generation agent

S Wang, C Chen, B Shiau, JH Harwell - Fuel, 2018 - Elsevier
While injection of CO 2 has great potential for increasing oil production, this potential is
limited by site conditions and operational constraints such as lack of proper infrastructure …

Influences of dead‐end pores in porous media on viscous fingering instabilities and cleanup of NAPLs in miscible displacements

Q Yuan, Z Ma, J Wang, X Zhou - Water Resources Research, 2021 - Wiley Online Library
Improving the understanding of mechanisms involved in a low miscible displacement
efficiency is significant for a wide spectrum of applications in subsurface from environment …

Comparison analyses between the linear and non-linear pressure-decline methods in cyclic solvent injection (CSI) process for heavy oil recovery

Z Du, X Peng, F Zeng - Fuel, 2018 - Elsevier
Cyclic solvent injection (CSI), also known as huff-n-puff process, has been demonstrated as
the most effective and promising solvent-based method in some heavy oil reservoirs in …

Fluid retention on miscible viscous fingering of finite slices in porous media with dead-end pores

Q Yuan - Chemical Engineering Science, 2022 - Elsevier
One of the key factors for low efficiency in miscible displacements is viscous fingering (VF), a
hydrodynamic instability when a less-viscous fluid displaces a more-viscous one. While …

Productivity model for water-producing gas well in a dipping gas reservoir with an aquifer considering stress-sensitive effect

X Huang, X Guo, X Zhou, X Lu… - Journal of Energy …, 2019 - asmedigitalcollection.asme.org
The development process of a dipping gas reservoir with an aquifer considering stress
sensitivity is complex. With gas development, formation pressure decreases, stress-sensitive …

Experimental investigation of cyclic solvent injection based on mixture solvent of carbon dioxide and propane

Z Du, X Peng, F Zeng - Fuel, 2018 - Elsevier
Cyclic solvent injection (CSI) process has been suggested as the most effective and
promising solvent-based method in some heavy oil reservoirs in which thermal-based …

[HTML][HTML] Mathematical model study on the damage of the liquid phase to productivity in the gas reservoir with a bottom water zone

X Huang, X Guo, X Lu, X Zhou, Z Qi, W Yan, J Li - Petroleum, 2018 - Elsevier
The production process in the gas reservoir with an aquifer is complex. With gas production,
aquifer water could possibly flow into the production well and accumulate within the well …

Dynamic Criteria for Physical Modeling of Oil Displacement by Gas Injection

AS Sorokin, AV Bolotov, DR Nuriev, VK Derevyanko… - Processes, 2022 - mdpi.com
In this work, slim tube displacement tests for minimum miscibility pressure MMP were carried
out. Based on the displacement data, the MMP was calculated by statistical regression using …

Numerical simulation study on steam-assisted gravity drainage performance in a heavy oil reservoir with a bottom water zone

J Ni, X Zhou, Q Yuan, X Lu, F Zeng, K Wu - Energies, 2017 - mdpi.com
In the Pikes Peak oil field near Lloydminster, Canada, a significant amount of heavy oil
reserves is located in reservoirs with a bottom water zone. The properties of the bottom …

Control of viscous fingering and mixing in miscible displacements with time‐dependent rates

Q Yuan, X Zhou, J Wang, F Zeng, KD Knorr… - AIChE …, 2019 - Wiley Online Library
In miscible displacements encountered in enhanced oil recovery processes, the unfavorable
viscosity contrast between injected solvent and oil usually leads to viscous fingering (VF), a …