Готові списки джерел за темами / Residual Trapping

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Добірка наукової літератури з теми "Residual Trapping"

Автор: Grafiati

Опубліковано: 19 січня 2023

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Статті в журналах з теми "Residual Trapping"

HESSE, M. A., F. M. ORR, and H. A. TCHELEPI. "Gravity currents with residual trapping." Journal of Fluid Mechanics 611 (September 25, 2008): 35–60. http://dx.doi.org/10.1017/s002211200800219x.

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Motivated by geological carbon dioxide (CO2) storage, we present a vertical-equilibrium sharp-interface model for the migration of immiscible gravity currents with constant residual trapping in a two-dimensional confined aquifer. The residual acts as a loss term that reduces the current volume continuously. In the limit of a horizontal aquifer, the interface shape is self-similar at early and at late times. The spreading of the current and the decay of its volume are governed by power-laws. At early times the exponent of the scaling law is independent of the residual, but at late times it decreases with increasing loss. Owing to the self-similar nature of the current the volume does not become zero, and the current continues to spread. In the hyperbolic limit, the leading edge of the current is given by a rarefaction and the trailing edge by a shock. In the presence of residual trapping, the current volume is reduced to zero in finite time. Expressions for the up-dip migration distance and the final migration time are obtained. Comparison with numerical results shows that the hyperbolic limit is a good approximation for currents with large mobility ratios even far from the hyperbolic limit. In gently sloping aquifers, the current evolution is divided into an initial near-parabolic stage, with power-law decrease of volume, and a later near-hyperbolic stage, characterized by a rapid decay of the plume volume. Our results suggest that the efficient residual trapping in dipping aquifers may allow CO2 storage in aquifers lacking structural closure, if CO2 is injected far enough from the outcrop of the aquifer.

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Hesse, M. A., F. M. Orr Jr., and H. A. Tchelepi. "Gravity currents with residual trapping." Energy Procedia 1, no. 1 (February 2009): 3275–81. http://dx.doi.org/10.1016/j.egypro.2009.02.113.

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Joodaki, Saba, Ramin Moghadasi, Farzad Basirat, Zhibing Yang, Jacob Bensabat, and Auli Niemi. "Model analysis of CO2 residual trapping from single-well push pull test — Heletz, Residual Trapping Experiment II." International Journal of Greenhouse Gas Control 101 (October 2020): 103134. http://dx.doi.org/10.1016/j.ijggc.2020.103134.

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Zuo, Lin, and Sally M. Benson. "Process-dependent residual trapping of CO2in sandstone." Geophysical Research Letters 41, no. 8 (April 24, 2014): 2820–26. http://dx.doi.org/10.1002/2014gl059653.

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Punnam, Pradeep Reddy, Balaji Krishnamurthy, and Vikranth Kumar Surasani. "Investigations of Structural and Residual Trapping Phenomena during CO2 Sequestration in Deccan Volcanic Province of the Saurashtra Region, Gujarat." International Journal of Chemical Engineering 2021 (July 8, 2021): 1–16. http://dx.doi.org/10.1155/2021/7762127.

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This work aims to study the structural and residual trapping mechanisms on the Deccan traps topography to elucidate the possible implementation of CO2 geological sequestration. This study provides an insight into a selection of stairsteps landscape from Deccan traps in the Saurashtra region, Gujarat, India. Various parameters affect the efficiency of the structural and residual trapping mechanisms. Thus, the parametric study is conducted on the modeled synthetic geological domain by considering the suitable injection points for varying injection rates and petrophysical properties. The outcomes of this study will provide insights into the dependencies of structural and residual trapping on the Deccan traps surface topography and injection rates. It can also establish a protocol for selecting the optimal injection points with the desired injection rate for the safe and efficient implementation of CO2 sequestration. The simulation results of this study have shown the dependencies of structural and residual trapping on the geological domain parameters.

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Rezk, Mohamed Gamal, Rahul S. Babu, Suaibu O. Badmus, and Abdulrauf R. Adebayo. "Foam-Assisted Capillary Trapping in Saline Aquifers—An Initial–Residual Saturation Analysis." Energies 15, no. 17 (August 29, 2022): 6305. http://dx.doi.org/10.3390/en15176305.

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Capillary trapping of gas in porous media is important for many processes such as oil recovery and gas geo-sequestration. Foam can mitigate gravity override and viscous fingering of gas by reducing its relative permeability through gas trapping. However, there are limited studies dedicated to understanding how foam assists in gas trapping, the best mode of foam injection for trapping, and its application in geo-sequestration. This paper uses an initial–residual saturation analysis to investigate foam-assisted capillary trapping during the surfactant alternating gas (SAG) injection process in saline aquifers. More specifically, we studied the effects of pore geometric properties, in situ generated foam, and surfactant concentration on gas trapping efficiency and final residual gas saturation, Sgr. First, NMR surface relaxometry measurements were carried out on the rock samples to indicate the mean pore sizes of the rocks. A series of core flooding tests, equipped with resistivity measurements, were then conducted using single-cycle gas injection followed by water injection, water alternating gas (WAG), and SAG injection methods to identify which mode of injection results in the most trapped gas. The results showed that the SAG method had a better sweep efficiency and trapped more gas than other methods. The initial–residual (IR) gas saturation relationships from SAG data measured from several rock samples were then analyzed using Land’s trapping model. Gas trapping efficiency (indicated by Land’s coefficient, C) and residual gas were also found to increase in rocks with large average pore sizes and with increasing surfactant concentration. However, increasing the surfactant concentration above a certain limit did not cause further improvement in the trapping coefficient but only increased the Sgr. The results also showed that high values of surfactant concentrations might cause a slight reduction in the foam’s apparent viscosity, which then reduces the initial gas saturation, and consequently, Sgr. Finally, a linear relationship between the Sgr and the measured log mean of surface relaxation times (T2LM) was obtained, and two correlations were proposed. Therefore, the NMR measurements can be considered a reliable prediction method for Sgr in porous media.

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Khanal, Aaditya, and Md Fahim Shahriar. "Physics-Based Proxy Modeling of CO2 Sequestration in Deep Saline Aquifers." Energies 15, no. 12 (June 14, 2022): 4350. http://dx.doi.org/10.3390/en15124350.

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The geological sequestration of CO2 in deep saline aquifers is one of the most effective strategies to reduce greenhouse emissions from the stationary point sources of CO2. However, it is a complex task to quantify the storage capacity of an aquifer as it is a function of various geological characteristics and operational decisions. This study applies physics-based proxy modeling by using multiple machine learning (ML) models to predict the CO2 trapping scenarios in a deep saline aquifer. A compositional reservoir simulator was used to develop a base case proxy model to simulate the CO2 trapping mechanisms (i.e., residual, solubility, and mineral trapping) for 275 years following a 25-year CO2 injection period in a deep saline aquifer. An expansive dataset comprising 19,800 data points was generated by varying several key geological and decision parameters to simulate multiple iterations of the base case model. The dataset was used to develop, train, and validate four robust ML models—multilayer perceptron (MLP), random forest (RF), support vector regression (SVR), and extreme gradient boosting (XGB). We analyzed the sequestered CO2 using the ML models by residual, solubility, and mineral trapping mechanisms. Based on the statistical accuracy results, with a coefficient of determination (R2) value of over 0.999, both RF and XGB had an excellent predictive ability for the cross-validated dataset. The proposed XGB model has the best CO2 trapping performance prediction with R2 values of 0.99988, 0.99968, and 0.99985 for residual trapping, mineralized trapping, and dissolution trapping mechanisms, respectively. Furthermore, a feature importance analysis for the RF algorithm identified reservoir monitoring time as the most critical feature dictating changes in CO2 trapping performance, while relative permeability hysteresis, permeability, and porosity of the reservoir were some of the key geological parameters. For XGB, however, the importance of uncertain geologic parameters varied based on different trapping mechanisms. The findings from this study show that the physics-based smart proxy models can be used as a robust predictive tool to estimate the sequestration of CO2 in deep saline aquifers with similar reservoir characteristics.

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Khanal, B. D., and P. Dhakal. "Effect of Successive Heat Treatment on the Performance of Superconducting Radio Frequency Niobium Cavities." Journal of Nepal Physical Society 8, no. 2 (December 19, 2022): 53–58. http://dx.doi.org/10.3126/jnphyssoc.v8i2.50152.

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One of the primary sources of radio frequency residual losses leading to lower quality factor is trapped residual magnetic field during the cooldown of superconducting radio frequency cavities. It has been reported that non-uniform recrystallization of niobium cavities after the post fabrication heat treatment leads to higher flux trapping during the cooldown, and hence the lower quality factor. Here, we fabricated two 1.3 GHz single cell cavities from high purity fine grain niobium and processed with successive heat treatments in the range 800-1000 °C to measure the flux expulsion and flux trapping sensitivity. The result indicates that although flux expulsion improves with increased heat treatments, there is a noticeable difference between the flux trapping sensitivity depending on the cavity. Evaluation of microstructure maybe crucial to understand the impact of flux trapping sensitivity on cavity performance.

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Rahman, Taufiq, Maxim Lebedev, Ahmed Barifcani, and Stefan Iglauer. "Residual trapping of supercritical CO2 in oil-wet sandstone." Journal of Colloid and Interface Science 469 (May 2016): 63–68. http://dx.doi.org/10.1016/j.jcis.2016.02.020.

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Niu, Ben, Ali Al-Menhali, and Sam Krevor. "A Study of Residual Carbon Dioxide Trapping in Sandstone." Energy Procedia 63 (2014): 5522–29. http://dx.doi.org/10.1016/j.egypro.2014.11.585.

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Більше джерел

Дисертації з теми "Residual Trapping"

Rasmusson, Kristina. "Modeling of geohydrological processes in geological CO2 storage – with focus on residual trapping." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-327994.

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Geological storage of carbon dioxide (CO2) in deep saline aquifers is one approach to mitigate release from large point sources to the atmosphere. Understanding of in-situ processes providing trapping is important to the development of realistic models and the planning of future storage projects. This thesis covers both field- and pore-scale numerical modeling studies of such geohydrological processes, with focus on residual trapping. The setting is a CO2-injection experiment at the Heletz test site, conducted within the frame of the EU FP7 MUSTANG and TRUST projects. The objectives of the thesis are to develop and analyze alternative experimental characterization test sequences for determining in-situ residual CO2 saturation (Sgr), as well as to analyze the impact of the injection strategy on trapping, the effect of model assumptions (coupled wellbore-reservoir flow, geological heterogeneity, trapping model) on the predicted trapping, and to develop a pore-network model (PNM) for simulating and analyzing pore-scale mechanisms. The results include a comparison of alternative characterization test sequences for estimating Sgr. The estimates were retrieved through parameter estimation. The effect on the estimate of including various data sets was determined. A new method, using withdrawal and an indicator-tracer, for obtaining a residual zone in-situ was also introduced. Simulations were made of the CO2 partitioning between layers in a multi-layered formation, and parameters influencing this were identified. The results showed the importance of accounting for coupled wellbore-reservoir flow in simulations of such scenarios. Simulations also showed that adding chase-fluid stages after a conventional CO2 injection enhances the (residual and dissolution) trapping. Including geological heterogeneity generally decreased the estimated trapping. The choice of trapping model may largely effect the quantity of the predicted residual trapping (although most of them produced similar results). The use of an appropriate trapping model and description of geological heterogeneity for a site when simulating CO2 sequestration is vital, as different assumptions may give significant discrepancies in predicted trapping. The result also includes a PNM code, for multiphase quasi-static flow and trapping in porous materials. It was used to investigate trapping and obtain an estimated trapping (IR) curve for Heletz sandstone.

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Ali, Mujahid. "Influence of organic matter on CO2 and H2 wettability of petroleum reservoirs." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2023. https://ro.ecu.edu.au/theses/2617.

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Carbon geo sequestration (CGS) is considered one of the promising approaches to reducing anthropogenic greenhouse gas emissions into the environment. Furthermore, Underground Hydrogen Storage (UHS) has been also identified as a viable solution to effectively stored hydrogen in geological formations. The underground storage of hydrogen (UHS) project has the potential to overcome the supply and demand imbalance by a subsequent withdrawal during periods of renewable energy shortage. Depleted petroleum reservoirs and deep saline aquifers are considered favorable candidates for long-term H2 and CO2 storage. H2 and CO2 become trapped in the reservoir by various physical and chemical mechanisms, and these mechanisms mainly include residual trapping and structural trapping, dissolution, and mineralization trapping. The wettability of rock minerals for storage gas in the presence of brine is a significant physicochemical factor that largely affects the trapping mechanism. The reservoir formations naturally contain small concentrations of water-soluble organic components in particular humic acid (HA). These organic components in formations also assist the growth of various natural organotrophic microorganisms. While the earlier investigations suggest the impact of organic matter and microorganisms on wetting behaviour for enhanced oil recovery applications, we here argue that these organic matter and microorganisms have a significant effect on the CO2 and H2 wettability of the subsurface formations as well. Therefore, we prepared organic acid and bacteria-treated surfaces, and the effects of these treated surfaces on the H2 and CO2 wettability of subsurface reservoirs were evaluated via advancing and receding contact angle measurements, streaming zeta potential, and NMR techniques, at various organic acid concentrations, high pressures (up to 25 MPa), elevated temperatures (up to 333 K) and brine salinity (up to 0.3 M NaCl), that simulate the subsurface reservoir conditions. The surface characterizations were examined by high-resolution scanning electron microscopy (SEM) and atomic force (AFM) microscopy imaging while other characterization tools (e.g. TOC, EDX, and FTIR) were also implemented to gain a broader insight into the observed wetting behaviour. Our results demonstrate that water-soluble organic acid concentration significantly changes rock wettability from water-wet (0-50o) towards CO2-wet (90-110o). Furthermore, a strong correlation exists between surface adsorption of organic acid and streaming potential coefficient, where the amount of residual water saturation decreases in organic acid aged cores – suggesting the presence of organic acid changes wettability towards CO2 wet in pores. The low organic content WA basalt was initially water-wet but with increasing pressure, it was also converted into a completely CO2-wet at pressures exceeding 15 MPa and 323 K. The results of bacteria-treated quartz surfaces suggest that (1) bacterial growth is prominent on the quartz surfaces with organic matter and, (2) the originally hydrophilic surfaces tend to become less hydrophilic while the hydrophobic surfaces turn less hydrophobic in the presence of microorganisms. The results of this investigation provide a fundamental understanding of H2 and CO2 wettability alteration in the subsurface microbial environment along with organic acid, thus, having implications for de-risk the large-scale carbon geo-sequestration (CGS) and underground hydrogen storage (UHS) projects.

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Книги з теми "Residual Trapping"

Lucangelo, Umberto, and Massimo Ferluga. Pulmonary mechanical dysfunction in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0084.

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In intensive care units practitioners are confronted every day with mechanically-ventilated patients and should be able to sort out from all the data available from modern ventilators to tailored patient ventilatory strategy. Real-time visualization of pressure, flow and tidal volume provide valuable information on the respiratory system, to optimize ventilatory support and avoiding complications associated with mechanical ventilation. Early determination of patient–ventilator asynchrony, air-trapping, and variation in respiratory parameters is important during mechanical ventilation. A correct evaluation of data becomes mandatory to avoid a prolonged need for ventilatory support. During dynamic hyperinflation the lungs do not have time to reach the functional residual capacity at the end of expiration, increasing the work of breathing and promoting patient-ventilator asynchrony. Expiratory capnogram provides qualitative information on the waveform patterns associated with mechanical ventilation and quantitative estimation of expired CO2. The concept of dead space accounts for those lung areas that are ventilated but not perfused. Calculations derived from volumetric capnography are useful indicators of pulmonary embolism. Moreover, alveolar dead space is increased in acute lung injury and its value decreased in case of positive end-expiratory pressure (PEEP)-induced recruitment, whereas PEEP-induced overdistension tends to increment alveolar dead space.

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Martin-Loeches, Ignacio, and Antonio Artigas. Respiratory support with positive end-expiratory pressure. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0094.

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Positive-end-expiratory pressure (PEEP) is the pressure present in the airway (alveolar pressure) above atmospheric pressure that exists at the end of expiration. The term PEEP is defined in two particular settings. Extrinsic PEEP (applied by ventilator) and intrinsic PEEP (PEEP caused by non-complete exhalation causing progressive air trapping). Applied (extrinsic) PEEP—is usually one of the first ventilator settings chosen when mechanical ventilation (MV) is initiated. Applying PEEP increases alveolar pressure and volume. The increased lung volume increases the surface area by reopening and stabilizing collapsed or unstable alveoli. PEEP therapy can be effective when used in patients with a diffuse lung disease with a decrease in functional residual capacity. Lung protection ventilation is an established strategy of management to reduce and avoid ventilator-induced lung injury and mortality. Levels of PEEP have been traditionally used from 5 to 12 cmH2O; however, higher levels of PEEP have also been proposed and updated in order to keep alveoli open, without the cyclical opening and closing of lung units (atelectrauma). The ideal level of PEEP is that which prevents derecruitment of the majority of alveoli, while causing minimal overdistension; however, it should be individualized and higher PEEP might be used in the more severe end of the spectrum of patients with improved survival. A survival benefit for higher levels of PEEP has not been yet reported for any patient under MV, but a higher PaO2/FiO2 ratio seems to be better in the higher PEEP group.

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Частини книг з теми "Residual Trapping"

Wolanski, Eric, and Peter Ridd. "Mixing and Trapping in Australian Tropical Coastal Waters." In Residual Currents and Long-term Transport, 165–83. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4613-9061-9_13.

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Zhao, H. "Four-stroke CAI engines with residual gas trapping." In HCCI and CAI Engines for the Automotive Industry, 103–35. CRC Press, 2007. http://dx.doi.org/10.1201/9781439824009.ch5.

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Zhao, H. "Four-stroke CAI engines with residual gas trapping." In HCCI and CAI Engines for the Automotive Industry, 103–36. Elsevier, 2007. http://dx.doi.org/10.1533/9781845693541.2.103.

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A. Dar, Showket, Mohmmad Javed Ansari, Yahya Al Naggar, Shafia Hassan, Syed Nighat, Syed Burjes Zehra, Rizwan Rashid, Mudasir Hassan, and Barkat Hussain. "Causes and Reasons of Insect Decline and the Way Forward." In Global Decline of Insects [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98786.

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There are lot of reasons and causes of insect decline. The main causes of insect decline is attributed to habitat destruction, land use changes, deforestation, intensive agriculture, urbanization, pollution, climate change, introduction of invasive insect species, application of pesticides, mass trapping of insects using pheromones and light traps, pathological problems on various insects, and introduction of exotic honey bees in new areas that compete with the native bees for resource portioning and other management techniques for pest management, and even not leaving any pest residue for predators and parasitoids for their survival. The use of chemical insecticides against target or non-target organisms is major cause for insect decline. The diseases and decline of the important pollinators is still a mistry for colony collapse disorder. To overcome the cause of insect decline, various conservation techniques to be adopted and augmentation of artificial nesting and feeding structures, use of green pesticides, maintaining the proper pest defender ratio (P:D), policies and reaching to political audience at global level and other factors already discussed in the chapter may be helpful for mitigating the insect decline and especially for the pollinators, a key insect for life.

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Stankovic, Sladjan, Miroslav Kostic, Igor Kostic, and Slobodan Krnjajic. "Practical Approaches to Pest Control: The Use of Natural Compounds." In Pests, Weeds and Diseases in Agricultural Crop and Animal Husbandry Production. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.91792.

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Food production is challenged by different factors: climate changes, market competitiveness, food safety, public demands, environmental challenges, new and invasive pests, etc. Intensive food production must be protected against pests, which is nowadays impossible with traditional techniques. The use of eco-friendly biopesticides based on essential oils (EOs), plant extracts (PE), and inert dusts appears to be a complementary or alternative methodology to the conventional chemically synthesized insecticides. The use of such biopesticides reduces the adverse pesticide effects on human health and environment. Biopesticides can exhibit toxic, repellent, and antifeeding effects. Development of bio-insecticides tackles the problem of food safety and residues in fresh food. Innovation within this approach is the combination of several types of active ingredients with complementary effects. Essential oils are well-known compounds with insecticide or repellent activities. New approaches, tools, and products for ecological pest management may substantially decrease pesticide use, especially in fruit and vegetable production. A win-win strategy is to find an appropriate nature-based compound having impact on pests, together with pesticide use, when unavoidable. Toxic or repellent activity could be used for pest control in the field conditions, as well as attractiveness of some compounds for mass trapping, before pests cause significant economic damage.

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Schneider, Gunter, and Georg A. Sprenger. "Transaldolase B: Trapping of Schiff Base Intermediate between Dihydroxyacetone and ε-Amino Group of Active-Site Lysine Residue by Borohydride Reduction." In Enzyme Kinetics and Mechanism - Part F: Detection and Characterization of Enzyme Reaction Intermediates, 197–201. Elsevier, 2002. http://dx.doi.org/10.1016/s0076-6879(02)54016-7.

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Тези доповідей конференцій з теми "Residual Trapping"

Yap, D., A. Megaritis, M. L. Wyszynski, and Hongming Xu. "Residual Gas Trapping for Natural Gas HCCI." In 2004 SAE Fuels & Lubricants Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2004. http://dx.doi.org/10.4271/2004-01-1973.

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Nattwongasem, D., and Kristian Jessen. "Residual Trapping of CO2 in Aquifers During Countercurrent Flow." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2009. http://dx.doi.org/10.2118/125029-ms.

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Chidambaram, Prasanna, Parimal A. Patil, Pankaj Kumar Tiwari, Debasis P. Das, and Raj Deo Tewari. "Injector Design Plays an Important Role In Maximisation of CO2 Trapping in Geological Formations." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31425-ms.

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Abstract Storing CO2 in geological formations is gaining greater importance as various companies start transitioning towards a carbon neutral future. CO2 storage in depleted hydrocarbon reservoirs and saline aquifers is considered an effective and secure option to reduce atmospheric CO2. Once underground, four different mechanisms keep the supercritical CO2 securely stored. The mechanisms, in increasing order of storage security are, 1. Structural/stratigraphic trapping, 2. Residual trapping, 3. Solubility trapping, and 4. Mineral trapping. Optimization of injector design to increase the amount of CO2 trapped in one of the more secure mechanisms is desirable. Structural trapping is the most dominant and least secure trapping mechanism for CO2 storage. Any opportunity to move structurally trapped CO2 into one of the other trapping mechanisms is preferable from the standpoint of storage security. Mechanistic models are used to study ways to improve amount of CO2 trapped by certain mechanisms. Residual trapping is affected by several factors including path traveled from perforation to the top of the structure. Similarly, solubility trapping is influenced by several factors including the amount of contact CO2 has with water. Injected CO2, due to buoyancy, rapidly rises to the top of the structure. There is potential to increase residual trapping and solubility trapping by optimizing the injector design to increase volume of reservoir contacted by CO2. Mechanistic modeling study shows that residual trapped and solubility trapped CO2 volume can be increased by optimizing injector design. There is up to 50% improvement observed in both trapping mechanisms depending on the reservoir characteristics and injector design. Interestingly, lower permeability reservoirs are more sensitive to injector design compared to higher permeability reservoirs. Of the injector designs studied, horizontal injectors placed at the bottom of the structure show the most improvement in both residual and solubility trapping mechanisms. Pressure of the reservoir also influences trapping mechanisms. At higher reservoir pressures, density difference between CO2 and water is smaller. This affects how CO2 plume migrates in the reservoir.

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Yap, D., M. L. Wyszynski, A. Megaritis, and Hongming Xu. "Applying boosting to gasoline HCCI operation with residual gas trapping." In 2005 SAE Brasil Fuels & Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-2121.

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Soroush, Mansour, Dag Wessel-Berg, and Jon Kleppe. "Effects of Wetting Behaviour on Residual Trapping in CO2-Brine Systems." In SPE Western Regional & AAPG Pacific Section Meeting 2013 Joint Technical Conference. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/165334-ms.

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Zhang, Haiyang, Muhammad Arif, and Mohammed Al Kobaisi. "A Numerical Evaluation of the Impact of Wettability on CO2 Trapping Capacity: Implications for Carbon Geo-Sequestration." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/210793-ms.

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Abstract Subsurface reservoir wettability is of vital importance in the prediction of CO2 trapping capacity and containment security. However, quantifying the effect of reservoir wetting behavior on CO2 sequestration potential in heterogeneous reservoirs remains to be challenging. This study conducts field-scale numerical simulations to understand the role of wetting characteristics and injection duration on the migration trend of CO2 plume and trapping capacity. These simulations were conducted on a heterogeneous sandstone reservoir with realistic relative permeability curves. The results indicate that CO2 plume migration and storage efficiency are influenced by wettability and injection duration. A water-wet system leads to higher residual gas trapping with less mobile CO2 and less dissolution. Moreover, an increase in injection duration would result in a decrease in residual trapping but the solubility trapping and plume migration distance would both increase.

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Borgqvist, Patrick, Per Tunestal, and Bengt Johansson. "Investigation and Comparison of Residual Gas Enhanced HCCI using Trapping (NVO HCCI) or Rebreathing of Residual Gases." In SAE International Powertrains, Fuels and Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-01-1772.

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Jia, Ying, Lei Huang, and Jin Yan. "Impact of Field Development Strategies on CO2 Trapping Mechanisms: A Case Study of CO2-EGR in the DND Tight Gas Field." In SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference & Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209718-ms.

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Abstract This paper presents field-scale compositional reservoir flow modeling in the DND tight gas field, to demonstrate the relative partitioning of 3 during and after CO2 injection. The model was developed to study the effect of structural trapping, solubility trapping, residual trapping, and mineralization trapping on the partitioning of CO2 in gas (free or residual), and brine phases over time. Furthermore, we investigated the impact of various injection scenarios, such as Injection pressure, Injection rate and Injection time, on the different trapping mechanisms. First, we used a high-resolution geo-model, which was constructed from wireline logs, seismic surveys, core data, and stratigraphic interpretation. As the initial distribution of fluids plays a vital role in CO2 partitioning, a comprehensive pressure-production history matching was completed. The hysteresis model was used to calculate the amount of CO2 trapped as residual. The water-rock reaction models among CO2 and minerals were added to analyze the mineralization trapping mechanism. CO2 solubility into brine was verified based on experiments. The model results show a new understanding of relative CO2 partitioning in porous media. Although it was believed that structural trapping is the largest of the trapping mechanisms during CO2 injection and post-injection, our results show that in sandstone tight gas field like DND tight gas field, the solubility of CO2 in gas plays a very important role, even in the first stage of CO2 injection. Porosity changes caused by the reaction among CO2 and different minerals during CO2 storage were also analyzed. Comprehensive models were run to estimate the amount of trapped CO2 during and after the injection period. The present work provides valuable insights for optimizing gas production and CO2 storage in sandstone reservoirs like DND tight gas field.

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Nhunduru, R. A. E., K. L. Wlodarczyk, A. Jahanbakhsh, O. Shahrokhi, S. Garcia, and M. M. Maroto-Valer. "Pore-Scale Simulations of Residual Trapping in Homogeneous and Heterogeneous Porous Media." In EAGE 2020 Annual Conference & Exhibition Online. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202011565.

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