Rezultaty - reservoir simulation
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81
Impacts of fracturing fluid viscosity and injection rate variations on the fracture network propagation in deep coalbed reservoirs
Wydane 2025-06-01“…Adjusting the fracturing fluid viscosity and injection rate effectively enhances complex fracture network generation and increases stimulated reservoir volume (SRV). However, the underlying mechanical mechanisms still remain critically underexplored. …”Adjusting the fracturing fluid viscosity and injection rate effectively enhances complex fracture network generation and increases stimulated reservoir volume (SRV). However, the underlying mechanical mechanisms still remain critically underexplored. Therefore, the objective of this study is to deve...
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82
Evaluating the effects of climate-induced heatwaves on the thermal dynamics and water quality of a deep reservoir in Portugal
Wydane 2025-08-01“…Climate projections for the end of the century were based on four EURO-CORDEX simulations under the RCP 8.5 scenario. A novel, in-depth approach is used to assess the spatial distribution of climate forcing effects across the reservoir's 2D space. …”Study region: The study was conducted in the Torrão Reservoir, situated in the Tâmega River Basin in northern Portugal. Study focus: This study evaluates the impact of future climate-induced heatwaves on the thermal structure of a deep reservoir using the 2D water quality model, CE-QUAL-W2. Climate...
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83
TESTING THE INTERACTION OF HEART LEFT VENTRICLE AND CONTINUOUS-FLOW PUMP ON A MOCK CIRCULATION MODEL UNDER NORMAL AND PATHOLOGICAL CONDITIONS
Wydane 2015-10-01“…The main components of the mock circulation model (arterial and venous blocks) are designed as closed reservoirs with an air bag providing the necessary elasticity value of these reservoirs. …”Introduction. The preliminary study of new developed pumps for circulatory support on the hydrodynamic circulation model is an important step in the process of their designing. Hydrodynamic circulation models that can closely imitate cardio – vascular system are important to defi ne the range of eff...
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84
A step-by-step approach to creating and tuning PVT-models of reservoir hydrocarbon systems based on the state equation
Wydane 2024-04-01“…The tuned gas-condensate PVT-model precisely reproduces the key properties such as dew point pressure, initial condensate content in the reservoir gas, z-factor of the reservoir gas, gas-oil ratio, stable condensate density, drop down curve by the result of CVD-test.PVT-models created on the base of the proposed method, provide reliable information on the properties of a reservoir fluid in development of flow simulation both using a reservoir simulation compositional models and using pseudo models “black oil”. …”The article is considering a new effective step-by-step approach to creating and tuning PVT-models of reservoir oil and reservoir gas condensate mixtures. The method is based on the reproducing of the results of field measurements and basic laboratory studies of representative samples in thermodynam...
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85
Cumulative and offsetting effects of Streamflow Response to Climate change and Large Reservoir Group in the Jinsha River Basin, China
Wydane 2025-08-01“…In this study, we proposed a novel approach for separating the reservoir's influence on streamflow and the response mechanisms in diverse watersheds. …”Study Region: Jinsha River Basin (JRB), situated in the upper sections of the Yangtze River basin, China Study Focus: The Jinsha River Basin (JRB), renowned as the world's largest hydropower base. In this study, we proposed a novel approach for separating the reservoir's influence on strea...
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86
How Long Until Agricultural Carbon Peaks in the Three Gorges Reservoir? Insights from 18 Districts and Counties
Wydane 2025-05-01“…Addressing this challenge, this study selects the Three Gorges Reservoir (TGRA)—a region characterized by monocultural cropping systems and intensive fertilizer dependency—as a representative case. …”Under the global climate governance framework, the Paris Agreement and the China–U.S. Glasgow Joint Declaration established a non-negotiable target of limiting 21st-century temperature rise to 1.5 °C. To date, over 130 nations have pledged carbon neutrality by mid-century, with agricultural activiti...
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87
Review of indices evaluating potential phosphorus release from sediments in lakes and reservoirs -- history, approaches, advantages, and limitations
Wydane 2025-09-01“…Evaluating potential phosphorus (P) release from sediments is critical for controlling lakes and reservoirs eutrophication. This review summarized history, procedures, and particular purposes of 15 existing indices into 5 groups covering studies conducted globally from 1950 to 2024, and discussed their advantages and limitations, which has never been systematically elaborated upon before. …”Evaluating potential phosphorus (P) release from sediments is critical for controlling lakes and reservoirs eutrophication. This review summarized history, procedures, and particular purposes of 15 existing indices into 5 groups covering studies conducted globally from 1950 to 2024, and discussed th...
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88
Numerical simulation of underground gas storage in an inclined aquifer
Wydane 2022-07-01Dokumenty pełnotekstoweIntroduction. Underground gas storage plays an important role in changing gas consumption. The main factors in the creation of UGS facilities are the presence of large gas consumers and the availability of the necessary reservoirs. The total volume of gas in UGS facilities is necessary to cover the...
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89
Evaluation of Oil Displacement by Polysaccharide Fermentation Broth of <i>Athelia rolfsii</i> Under Extreme Reservoir Conditions
Wydane 2025-07-01“…This study investigated the application potential of the original fermentation broth of exopolysaccharides (EPS) produced by microorganisms in a simulated high-temperature and high-salinity oil reservoir environment. …”In the development of high-temperature and high-salinity oil fields, biopolymer scleroglucan flooding technology faces significant challenges. Traditional scleroglucan products exhibit poor injectability and high extraction costs. This study investigated the application potential of the original fer...
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90
Advancing sedimentation modeling in large reservoir systems: Insights from multi-scale process coupling and machine learning
Wydane 2025-08-01“…Study region: The lower Jinsha River, China, one of the largest cascade reservoir systems in the world. Study focus: Sedimentation directly affects reservoir operation and management. …”Study region: The lower Jinsha River, China, one of the largest cascade reservoir systems in the world. Study focus: Sedimentation directly affects reservoir operation and management. The study area is a typical mountainous basin with complex sediment transport dynamics, which challenge both the acc...
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91
A Comparative Study of Three-Dimensional Flow Based, Geometric, and Empirical Tortuosity Models in Carbonate and Sandstone Reservoirs
Wydane 2025-07-01“…Understanding tortuosity is essential for accurately modeling fluid flow in complex porous media, particularly in the sub-surface reservoir rock; therefore, tortuosity estimation was evaluated using three approaches: Streamline streamline simulations via the Lattice Boltzmann Method (LBM), geometric pathfinding using Dijkstra’s algorithm, and empirical modeling based on pore-structure parameters. …”Understanding tortuosity is essential for accurately modeling fluid flow in complex porous media, particularly in the sub-surface reservoir rock; therefore, tortuosity estimation was evaluated using three approaches: Streamline streamline simulations via the Lattice Boltzmann Method (LBM), geometric...
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92
Feasibility study of CO2 injection at the top of tight conglomerate reservoir in Mahu Sag, Junggar Basin, China
Wydane 2025-07-01“…This study investigates the feasibility of early-stage CO₂ injection at the reservoir top to enhance oil recovery through gravity-assisted displacement.MethodsLong-core gravity drainage experiments and numerical simulations were conducted to evaluate the effects of formation dip angle (0°∼90°) and permeability (0.85∼1.7 mD) on displacement efficiency. …”IntroductionThe Mahu Sag tight conglomerate reservoirs in the Junggar Basin exhibit rapid pressure depletion and severe degassing in horizontal wells due to low reservoir-saturation pressure differences (<5 MPa), resulting in poor recovery efficiency under primary depletion. This study invest...
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93
Method for Solving the Problem of Load Movement over the Ice Cover of a Reservoir along a Complex Trajectory
Wydane 2023-07-01“…The method simulates the impact of vehicles on the ice cover of a reservoir. …”Introduction. The development of the polar regions of the World Ocean contributed to an increased interest in studying wave processes in water bodies with ice cover caused by the action of a mobile load. In most papers of domestic and foreign scientists, the ice sheet was considered as an elastic or...
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94
Regularities of Changes in the Surface Impedance of the Medium Over Hydrocarbon Deposits Under the Influence of Radio Pulsed Signals
Wydane 2023-10-01Dokumenty pełnotekstoweThe interaction of radio pulse signals in an anisotropic medium over hydrocarbon deposits has been studied. During the experiments, computer simulation of the characteristics of anisotropic media was performed. The dependences of the real, imaginary, and phase components of the characteristics of th...
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95
Experimental study on microscopic residual oil distribution and dredging direction of water-driven zoned utilization in narrow-channel reservoirs
Wydane 2025-07-01“…In this paper, taking BZ offshore narrow channel reservoir as the research object, a full-view microscopic water drive physical simulation experiment platform was established and microfluidic experiments were carried out. …”In the process of water-driven development of narrow-channel oil reservoirs, the comprehensive water cut rate rises quickly, showing the development characteristics of “flooding everywhere in the river channel, but the degree of recovery is low”, and the underground oil and water distribution is com...
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96
Estimating over thousands of reservoirs sedimentation and effects on sediment flux through a newly proposed sediment transport model
Wydane 2025-12-01“…We therefore suggest desilting small dams and exploring the sedimentation as a potential sand and stone resource.Highlights A model is established to simulate sediment trapping by dams in the river networkBedload is an essential source to replenish sediment after trappingOver 2400 reservoirs sedimentation and effects on sediment flux are estimatedMega dam is primarily responsible for sediment flux declineSmall dam has non-negligible sedimentation, putting the watershed in potential danger…”Dam largely traps sediments, leading to serious channel starvation and coastal erosion. Trapped sediments cause reservoir sedimentation, reducing dam capacity and its lifespan. Estimating dam trapping effects on sediment reduction and reservoir sedimentation is therefore important in sediment manage...
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97
Tectonic Fractures Modeling Based on Multi-Source Data Fusion in Deep Carbonate Reservoirs, Northeast Sichuan Basin, China
Wydane 2025-06-01“…The modeling results indicate that fracture development is influenced by the interaction of fault periods, distance from faults and matrix types. Numerical simulation of gas reservoirs using this integrated model shows a 5% improvement in the historical fit rate, providing further validation of its accuracy.…”Deep carbonate reservoirs exhibit pronounced multiscale heterogeneity, driven by polyphase fault activation and matrix heterogeneity, which collectively control the stochastic hierarchical spatial distribution of fracture networks. The construction of high-fidelity discrete fracture network (DFN) mo...
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98
Evolution of Pore Structure and Fractal Characteristics in Transitional Shale Reservoirs: Case Study of Shanxi Formation, Eastern Ordos Basin
Wydane 2025-05-01“…The fractal dimension quantitatively describes the complexity of the shale pore structure and serves as a powerful tool for characterizing the evolution of shale reservoirs. Thermal simulation experiments were conducted on the low-maturity transitional shale from the Shanxi Formation in the Ordos Basin. …”The fractal dimension quantitatively describes the complexity of the shale pore structure and serves as a powerful tool for characterizing the evolution of shale reservoirs. Thermal simulation experiments were conducted on the low-maturity transitional shale from the Shanxi Formation in the Ordos Ba...
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99
Comparison of processing speed of NRS-ANN hybrid and ANN models for oil production rate estimation of reservoir under waterflooding
Wydane 2025-12-01“…This study compared the predictive performance and processing speed of an artificial neural network (ANN) and a hybrid of a numerical reservoir simulation (NRS) and artificial neural network (NRS-ANN) models in estimating the oil production rate of the ZH86 reservoir block under waterflood recovery. …”This study compared the predictive performance and processing speed of an artificial neural network (ANN) and a hybrid of a numerical reservoir simulation (NRS) and artificial neural network (NRS-ANN) models in estimating the oil production rate of the ZH86 reservoir block under waterflood recovery....
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100
Nitrogen release potential and ecological environmental effects during particulate matter deposition in sub-deep reservoirs of Southwest China
Wydane 2025-08-01“…Study region: The study focuses on two sub-deep reservoirs (PD and BH) in southwestern China. Study focus: Suspended particulate matter (SPM) is one of the most important sources of nitrogen (N) for maintaining the trophic state and stimulating primary production in lakes and reservoirs. …”Study region: The study focuses on two sub-deep reservoirs (PD and BH) in southwestern China. Study focus: Suspended particulate matter (SPM) is one of the most important sources of nitrogen (N) for maintaining the trophic state and stimulating primary production in lakes and reservoirs. The researc...
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