2013年11月25日 · In EOR projects, miscible displacements are more popular than immiscible; despite of immiscible displacements could be more effective and significant if CO 2 potential is high at immiscible process with great level whereas …

2019年3月1日 · EOR involves thermal and/or nonthermal means of changing the properties of crude oil in reservoirs, such as density and viscosity that ensures improved oil displacement in the reservoir and...

Thermal EOR: steam is used to heat the oil in the ground, reducing its viscosity and making it easier to move. This is most often applied in heavy oil reservoirs. [8] Chemical EOR: water soluble polymers and/or surfactants are added to water that is injected into the subsurface.

as Enhanced Oil Recovery (EOR), introduces fluids that reduce viscosity and improve flow. These fluids could consist of gases that are miscible with oil (typically carbon dioxide), steam, air or oxygen, polymer solu-tions, gels, surfactant-polymer formulations, alkaline-surfactant-polymer formulations, or microor-ganism formulations.

Miscibility can only be achieved with light oils at high pressures; therefore, deep reservoirs are needed. A steeply dipping reservoir is desired to permit gravity stabilization of the displacement, which has a very unfavorable mobility ratio. Viscous fingering results in poor vertical and horizontal sweep efficiency.

2025年1月1日 · This research conducts a thorough analysis of the feasibility of using miscible gas-based EOR methods in ULR. The study findings reveal that molecular diffusion is the primary mechanism. The frequency of huff-n-puff cycles negatively impacts CO 2 …

2018年9月12日 · Carbon capture aims to mitigate the emission of CO2 by capturing it at the point of combustion then storing it in geological reservoirs or applied through enhanced oil recovery (EOR) in a technology known as miscible flooding, so reduce CO2 atmospheric emissions.

2005年12月5日 · Miscible gas injection is the most widely applied light oil enhanced oil recovery (EOR) process. A methodology, based on well-established physical principles, has been developed for estimating the conditions under which gas will be miscible with oil.

2023年6月1日 · CO 2 miscible flooding is a prospective production method to enhance oil recovery (EOR), especially in low-permeability reservoirs. However, there is a lack of comprehensive and systematic understanding of the key parameters and dominant EOR mechanism of CO 2 miscible flooding.

This course presents a comprehensive summary of miscible, polymer, and thermal enhanced oil recovery processes. The topics that are also covered include fractional flow theory, Cyclic Steam Stimulation (CSS), Steam Assisted Gravity Drainage (SAGD), and some other EOR methods (including the newly introduced hybrid processes).