Economic co-optimization of oil recovery and CO2 sequestration

Wang, Xiao; Veld, Klaas van ’t; Marcy, Peter; Huzurbazar, Snehalata; Alvarado, Vladimir

doi:10.1016/j.apenergy.2018.03.166

Cited by 58 publications

(13 citation statements)

References 56 publications

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“…We will study the pore-scale trapping of gas (representing CO 2 at immiscible conditions) in a depleted oilfield. The use of these fields for CO 2 storage can be economically ad-vantageous, since the injected CO 2 can enhance oil recovery [59,6]. Furthermore, oilfields have retained hydrocarbons for geological time and so they are likely to provide good storage security for the injected CO 2 [32,26].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of enhanced gas trapping applied to CO2 storage in the presence of oil using synchrotron X-ray micro tomography

et al. 2020

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During CO 2 storage in depleted oil fields, at immiscible conditions, CO 2 can be trapped in the pore space by capillary forces, providing safe storage over geological times-a phenomenon named capillary trapping. Synchrotron X-ray imaging was used to obtain dynamic three-dimensional images of the flow of the three phases involved in this process-brine, oil and gas (nitrogen)-at high pressure and temperature, inside the pore space of Ketton limestone. First, using continuous imaging of the porous medium during gas injection, performed after waterflooding, we observed chains of multiple displacements between the three phases, caused by the connectivity of the pore space. Then, brine was re-injected and double capillary trapping-gas trapping by oil and oil trapping by brine-was the dominant double displacement event. We computed pore occupancy, saturations, interfacial area, mean curvature and Euler characteristic to elucidate these double capillary trapping phenomena, which lead to a high residual gas saturation. Pore occupancy and saturation results show an enhancement of gas trapping in the presence of both oil and brine, which potentially makes CO 2 storage in depleted oil reservoirs attractive, combining safe storage with enhanced oil recovery through immiscible gas injection. Mean curvature measurements were used to assess the capillary pressures between fluid pairs during double displacements and these confirmed the stability of the observed spreading oil layers, which facilitated the double capillary trapping. Interfacial area and Euler characteristic increased, indicating lower oil and gas connectivity, due to the capillary trapping events.

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Section: Introductionmentioning

confidence: 99%

Dynamics of enhanced gas trapping applied to CO2 storage in the presence of oil using synchrotron X-ray micro tomography

et al. 2020

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“…For example (Wang et al 2018 ) employ a GARCHSK method and CoVaR-Network, a method for examining the effects of stock market spillovers between the U.S. and China, as well as the crude oil market. Another study (Wen et al 2016 ) investigated the risk connectedness of oil and stock markets using wavelet coherence and B.K.…”

Section: Literature Reviewmentioning

confidence: 99%

Determining the COVID-19 effects on spillover between oil market and stock exchange: a global perspective analysis

Yan

Cao

Gao

2022

Environ Sci Pollut Res

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This paper investigates volatility spillovers between the global crude oil market and the stock markets of the global oil stock markets (Russian, Canada, China, Kuwait, and the USA) pre and after the COVID-19 pandemic. We use wavelet Granger causality methods to study the volatility spillovers between global oil stock markets, mainly from January 1, 2019, to March 31, 2021. Our Results (1) shows that WTI and Brent oil prices had a negative mean return before COVID-19 but a positive mean return during the pandemic spread. Other Results (2) find the positive, significantly lowest, and highest frequency during the COVID-19 outbreak for all selected countries. The results also show that the link between oil WTI & Brent prices and stock markets return in the lowest (33-66 days) and highest frequency range (4-16) before the Covid-19 epidemic, especially in the first quarter of 2020. Before the COVID-19 period, the Russian oil stock market is seriously prejudiced with oil prices on a modest scale, but not after the pandemic's start. This study also perceives direction opposite between the COVID-19 period. The Canadian and United States America oil and stock markets influence the lowest scale in the previous COVID-19 sample for the U.S. market. Moreover, this paper exposed that oil marketing highest oil futures in their portfolios than stock shares for all times. We found that oil price shocks had a more significant impact on the stock markets of the United States and Canada than on the stock markets of other countries.

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“…Carbon capture, utilization, and storage (CCUS) technologies are considered promising approaches for mitigating anthropogenic CO 2 emissions from point sources (Aminu et al, 2017; Celia, 2017; Markewitz et al, 2012; Yan & Zhang, 2019). Particularly, CO 2 ‐enhanced oil recovery (CO 2 ‐EOR) is a well‐established and relatively mature technology in oil industry suitable for CO 2 storage, with potential economic benefits of increasing oil production and reduced risks of overpressure with sequestered CO 2 in the pore space for previous oil in place (Tomski et al, 2012; Wang et al, 2018). The feasibility and long‐term safety of geologic CO 2 sequestration (GCS) rely on the sealing capacity and integrity of the caprock (Cao et al, 2015; Dai et al, 2020; Qafoku et al, 2017; Song & Zhang, 2013).…”

Section: Introductionmentioning

confidence: 99%

Chemical‐Mechanical Impacts of CO₂ Intrusion Into Heterogeneous Caprock

Xiao

Moodie

et al. 2020

Water Resources Research

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The potential economic benefits offered by CO 2-enhanced oil recovery (CO 2-EOR) and storage, including increasing oil production and mitigating CO 2 storage cost, make it an attractive approach for reducing CO 2 emissions. Sealing formation (caprock) integrity is considered a key risk factor, because of the potential for leaked CO 2 or brine migrating into shallow groundwater formations. The primary purpose of this research is to evaluate general caprock sealing efficiency and integrity under typical CO 2-EOR conditions, by assessing the influence of hydrological and mineralogical heterogeneity, possible mineralogical alteration, and potential failure of rock due to hydrological and mineralogical changes. An active CO 2-EOR project at the Farnsworth Unit (FWU) in the northern Texas is selected as a case study. A coupled reactive-transport-geomechanics model of the FWU caprock (the Morrow Shale and the Thirteen Fingers Limestone) was developed based on site-specific geological data. Key results suggest that the Thirteen Fingers Limestone is an effective caprock. After 5,000 years, effectively no supercritical CO 2 penetrates this formation, and the penetration depth of dissolved CO 2 in aqueous phase does not exceed 10 m. Because of mineral precipitation in the Morrow Shale, maximum porosity decreases~25% at the reservoir-caprock interface, suggesting increased caprock sealing efficiency. Geomechanical response of the caprock due to CO 2 intrusion and mineral alteration suggests low risk of induced fractures. This study provides a refined evaluation of long-term caprock integrity as a function of coupled hydrological, chemical, and geomechanical processes and is intended to support future assessment of feasibility and safety of geologic CO 2 sequestration. Plain Language Summary Geologic CO 2 sequestration (GCS) is considered a viable solution for reducing greenhouse gas emissions. Particularly, as a widely used technology, injecting CO 2 into oil reservoirs or CO 2-enhanced oil recovery (CO 2-EOR), can increase oil production with associated profits. One concern of GCS is the possible CO 2 leakage through sealing formation into shallow groundwater aquifers and impact drinking water quality. Therefore, our study focuses on evaluating caprock sealing efficiency and integrity under typical CO 2-EOR conditions. Once CO 2 enters the caprock, chemical reactions occur, and the minerals might change by dissolution and precipitation. This process would cause changes of CO 2 flow and strength of the caprock. In this study, we analyzed coupling effects of flow, chemical reactions, and mechanical changes of caprock under CO 2-rich condition by numerical simulations. The Farnsworth Unit (FWU) undergoing active CO 2-EOR is selected as a case study. Key results suggest that the selected caprock at the FWU is effective for preventing CO 2 leakage for at least 5,000 years. Geomechanical response of the caprock due to mineral changes is not significant and suggests low risk of induced fractures. This study provides benefits for f...

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Economic co-optimization of oil recovery and CO2 sequestration

Cited by 58 publications

References 56 publications

Dynamics of enhanced gas trapping applied to CO2 storage in the presence of oil using synchrotron X-ray micro tomography

Dynamics of enhanced gas trapping applied to CO2 storage in the presence of oil using synchrotron X-ray micro tomography

Determining the COVID-19 effects on spillover between oil market and stock exchange: a global perspective analysis

Chemical‐Mechanical Impacts of CO₂ Intrusion Into Heterogeneous Caprock

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Economic co-optimization of oil recovery and CO2 sequestration

Cited by 58 publications

References 56 publications

Dynamics of enhanced gas trapping applied to CO2 storage in the presence of oil using synchrotron X-ray micro tomography

Dynamics of enhanced gas trapping applied to CO2 storage in the presence of oil using synchrotron X-ray micro tomography

Determining the COVID-19 effects on spillover between oil market and stock exchange: a global perspective analysis

Chemical‐Mechanical Impacts of CO2 Intrusion Into Heterogeneous Caprock

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Chemical‐Mechanical Impacts of CO₂ Intrusion Into Heterogeneous Caprock