Research on microscopic oil displacement mechanism of CO2 EOR in extra-high water cut reservoirs

Cui, Meng; Wang, Rui; Lv, Chengyuan; Tang, Yongqiang

doi:10.1016/j.petrol.2017.04.006

Cited by 45 publications

(35 citation statements)

References 5 publications

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“…The volume of the crude oil expands, the CO 2 extracts the light components of crude oil into the gas phase, and finally condenses into oil film on the surface of the water film to form a flowable oil film. This achieves the effect of peeling the oil film off the pore walls (Cui et al, 2017).…”

Section: Analysis Of Mobilization Mechanism Of Microscopic Residual Oilmentioning

confidence: 99%

Experimental investigation of immiscible water-alternating-gas injection in ultra-high water-cut stage reservoir

Kong

Gao

Sarma

et al. 2021

Adv. Geo-Energy Res.

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Section: Analysis Of Mobilization Mechanism Of Microscopic Residual Oilmentioning

confidence: 99%

Experimental investigation of immiscible water-alternating-gas injection in ultra-high water-cut stage reservoir

Kong

Gao

Sarma

et al. 2021

Adv. Geo-Energy Res.

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“…It is significant to construct a microscopic visible model to reflect the actual porous media. [91][92][93][94][95][96][97][98][99] Figure 13 shows the CO 2 flooding process based on a visible porous medium model. Brine (colorless) sealed by oil (dark) can be observed at the end of channels after oil injection (Figure 13a).…”

Section: Pore-scale Visualizationmentioning

confidence: 99%

Review on Pore Structure Characterization and Microscopic Flow Mechanism of CO₂ Flooding in Porous Media

Tang

Hou

et al. 2020

Energy Tech

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Rapidly rising emissions of greenhouse gases into the atmosphere lead to the greenhouse effect and accelerate the exacerbation of the global climate. [1] Greenhouse gases include carbon dioxide (CO 2), ozone (O 3), nitric oxide (N 2 O), methane (CH 4), hydrogen fluoride, the chlorine carbide class (CFCs, HFCs, HCFCs), and perfluorinated carbide (PFCs) and sulfur hexafluoride (SF 6). The concentration of CO 2 is the highest in the atmosphere among greenhouse gases, and it significantly dominates global warming. [2] The process of the greenhouse effect and the impact of greenhouse gases on global warming are shown in Figure 1. Carbon is one of the most important elements of earth's structure and living things. It widely exists in the biosphere, lithosphere, hydrosphere, and atmosphere and circulates continuously with the movement of the Earth. CO 2 plays an important role in the cycle. Green plants absorb CO 2 from the atmosphere, and CO 2 is converted into organic matter and oxygen is also released through photosynthesis with the participation of water, as shown in Figure 2. [3,4] Before the industrial revolution, the carbon cycle has been kept in balance for millions of years. After the industrial revolution, human beings began to utilize fossil fuels to obtain energy. The balance of nature is thus destroyed, leading to climate anomalies (e.g., global warming) due to the increased concentration of CO 2 caused by the burning of fossil fuels and other industrial activities. Therefore, reducing emissions of CO 2 and other greenhouse gases is essential for protecting the natural environment. [5,6] At present, carbon emissions can be reduced by decreasing energy consumption, improving energy utilization efficiency, replacing fossil fuels with clean energy (e.g., solar energy, wind energy, geothermal energy, and hydrogen energy), and carbon capture and storage (CCS). However, it is still hard for most of the clean energy to completely replace fossil fuels in the near future because of safety, technology availability, and economical efficiency. [7] CCS is an important technological means to reduce carbon emission. [8,9] However, CCS requires high costs and may cause leakage of carbon because the captured carbon is usually sequestrated in saline aquifers, coal seams, depleted reservoirs, etc. [10-12] Therefore, carbon capture, utilization and storage (CCUS) has been acknowledged as a promising technology to achieve efficient reduction of carbon and also generate economic benefits, which is more practical and economical. [13] CO 2 is an important material for industry and has been applied in many fields, as shown in Figure 3. [14,15] In the food industry, CO 2 is used in the production of carbonized beverages, food preservation, and industrial processing as a refrigerant and protective gas. It can also be applied to synthesize chemicals, drugs, polymers, such as degradable plastics, etc. High-purity

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“…The camera is placed perpendicular to the laser to capture light scattered by particles. In this way, the velocity vector of the tracer particle can be calculated from the time interval of two laser beams and the displacement of the tracer particle [7][8].…”

Section: Particle Image Velocimetry (Piv)mentioning

confidence: 99%

Visualization of Low-Permeability Natural Core Carbon Dioxide Immiscible Flooding Flow Characteristics

2020

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Research on microscopic oil displacement mechanism of CO2 EOR in extra-high water cut reservoirs

Cited by 45 publications

References 5 publications

Experimental investigation of immiscible water-alternating-gas injection in ultra-high water-cut stage reservoir

Experimental investigation of immiscible water-alternating-gas injection in ultra-high water-cut stage reservoir

Review on Pore Structure Characterization and Microscopic Flow Mechanism of CO₂ Flooding in Porous Media

Visualization of Low-Permeability Natural Core Carbon Dioxide Immiscible Flooding Flow Characteristics

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Research on microscopic oil displacement mechanism of CO2 EOR in extra-high water cut reservoirs

Cited by 45 publications

References 5 publications

Experimental investigation of immiscible water-alternating-gas injection in ultra-high water-cut stage reservoir

Experimental investigation of immiscible water-alternating-gas injection in ultra-high water-cut stage reservoir

Review on Pore Structure Characterization and Microscopic Flow Mechanism of CO2 Flooding in Porous Media

Visualization of Low-Permeability Natural Core Carbon Dioxide Immiscible Flooding Flow Characteristics

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Review on Pore Structure Characterization and Microscopic Flow Mechanism of CO₂ Flooding in Porous Media