Extraction of ADCIGs in viscoelastic media based on fractional viscoelastic equations
Available online 2 October 2024
Angle domain common imaging gathers (ADCIGs) serve as not only an ideal approach for tomographic velocity modeling but also as a crucial means of mitigating low-frequency noise. Thus, they play a significant...
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Study on the mass transfer characteristics of hydrogen in heavy oil by a modified dynamic pressure step method
Available online 30 September 2024
The dissolved hydrogen, rather than gaseous hydrogen, plays a crucial role in the hydrogenation process. A thorough understanding of hydrogen dissolution is essential for optimizing the hydrogenation...
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Synergistic effect of modified ethylene-vinyl acetate and asphaltenes on improving the flow properties of model oil
Available online 30 September 2024
The effect of alcoholic polyethylene-vinyl acetate (EVA) product ethylene-vinyl alcohol copolymer (EVAL) on the low-temperature flow properties of model oil containing asphaltene (ASP) was investigated....
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Intelligent seismic AVO inversion method for brittleness index of shale oil reservoirs
Available online 28 September 2024
The brittleness index (BI) is crucial for predicting engineering sweet spots and designing fracturing operations in shale oil reservoir exploration and development. Seismic amplitude variation with...
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Applications of molecular dynamics simulation in studying shale oil reservoirs at the nanoscale: Advances, challenges and perspectives
Available online 27 September 2024
The global energy demand is increasing rapidly, and it is imperative to develop shale hydrocarbon resources vigorously. The prerequisite for enhancing the exploitation efficiency of shale reservoirs...
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Feasibility study of a process for the reduction of sulfur oxides in flue gas of fluid catalytic cracking unit using the riser reactor
Available online 27 September 2024
In this work, a new process for achieving the recovery of elemental sulfur by utilizing a fluidized catalytic cracking (FCC) riser reactor for SOx treatment (FCC-DeSOx) is proposed. The process leverages...
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Numerical simulation of the electromagnetic torques of PMSM with two-way magneto-mechanical coupling and nonuniform spline clearance in electric submersible pumping wells
Available online 26 September 2024
Clearance-fit (side-fit) spline joints are a key component in a permanent magnet synchronous motor (PMSM) in electric submersible pumping wells. The nonuniform spline clearance affects the output performance...
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Characteristics, main controlling factors and densification mechanisms of unconventional tight reservoirs in Triassic Yanchang Formation in southern Ordos Basin, China
Available online 26 September 2024
The key factors controlling the densification of unconventional reservoirs (e.g., tight oil and gas reservoirs) remain poorly understood and directly affect the distribution of exploitable resources....
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A survey on multi-objective, model-based, oil and gas field development optimization: current status and future directions
Available online 25 September 2024
In the area of reservoir engineering, the optimization of oil and gas production is a complex task involving a myriad of interconnected decision variables shaping the production system's infrastructure....
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Temperature- and alkali-resistant induced domestication of Bacillus pasteurii in drilling fluid and its borehole wall enhancement properties
Available online 25 September 2024
The microbial induced calcium carbonate precipitation (MICP) technology provides a new approach to solve borehole destabilization in broken formations; however, the high-temperature and alkaline environments...
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Impact of temperature and salinity on fines detachment: AFM measurements and XDLVO theory
Available online 24 September 2024
Fine particle detachment and subsequent migration can lead to severe pore plugging and consequent permeability decline. Therefore, it is crucial to quantify the critical condition when fine particle...
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Montmorillonite modified by composite modifier as a rheological regulator of drilling fluid suitable for ultra-low temperature conditions in Antarctica
Available online 23 September 2024
In order to settle the issues of poor rheology for drilling fluids in Antarctica, it is important to develop an agent that can availably address these challenges. For this reason, a rheological regulator...
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Towards in-depth profile control using s-MPG synergy with MSRG in fractured-vuggy carbonate reservoirs
Available online 21 September 2024
In-depth profile control is a crucial technique employed to enhance oil recovery in fractured-vuggy carbonate reservoirs. However, it is a challenge to achieve in-depth profile control. In this paper,...
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Carbon Dioxide Storage and Cumulative Oil Production Predictions in Unconventional Reservoirs Applying Optimized Machine-Learning Models
Available online 21 September 2024
To achieve carbon dioxide (CO2) storage through enhanced oil recovery, accurate forecasting of CO2 subsurface storage and cumulative oil production is essential. This study develops hybrid predictive...
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Machine learning approaches for assessing stability in acid-crude oil emulsions: application to mitigate formation damage
Available online 20 September 2024
The stability of acid-crude oil emulsion poses manifold issues in the oil industry. Experimentally evaluating this phenomenon may be costly and time-consuming. In contrast, machine learning models have...
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Feasibility of CO2 storage and enhanced gas recovery in depleted tight sandstone gas reservoirs within multi-stage fracturing horizontal wells
Available online 19 September 2024
Injecting CO2 when the gas reservoir of tight sandstone is depleted can achieve the dual purposes of greenhouse gas storage and enhanced gas recovery (CS-EGR). To evaluate the feasibility of CO2 injection...
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Adsorption and retention of fracturing fluid and its impact on gas transport in tight sandstone with different clay minerals
Available online 14 September 2024
To elucidate the adsorption characteristics and retention mechanisms of fracturing fluids in diverse clay minerals, we conducted on-line nuclear magnetic resonance (NMR) and atomic force microscopy...
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Study of the evolution characteristics of fiber-optic strain induced by the propagation of bedding fractures in hydraulic fracturing
Available online 13 September 2024
Shale reservoirs contain numerous bedding fractures, making the formation of complex fracture networks during fracturing a persistent technical challenge in evaluating shale fracture morphology. Distributed...
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Evaluation of micro-dispersion on oil recovery during low-salinity water-alternating-CO2 processes in sandstone cores: An integrated experimental approach
Available online 11 September 2024
Low-salinity water (LSW) and CO2 could be combined to perform better in a hydrocarbon reservoir due to their synergistic advantages for enhanced oil recovery (EOR); however, its microscopic recovery...
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Multi-stage and multi-objective optimization of anti-typhoon evacuation strategy for riser with new hang-off system
Available online 11 September 2024
A new hang-off system has been proposed to improve the security of risers in hang-off modes during typhoons. However, efficient anti-typhoon evacuation strategies have not been investigated. Optimization...
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Molecular transformation of heavy oil during slurry phase hydrocracking process: influences of operational conditions
Available online 10 September 2024
The influences of reaction temperature, duration, pressure, and catalyst concentration on the molecular transformation of residual slurry phase hydrocracking process were investigated. The molecular...
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The mechanical properties of Lucaogou shale layered samples and the influence of minerals on fracture propagation
Available online 10 September 2024
Shale oil is one of the most promising alternative unconventional energies in the world, and Lucaogou Formation shows significant exploration potential, becoming the primary target in northwestern China....
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Pore-scale fluid distribution and remaining oil during tertiary low-salinity waterflooding in a carbonate
Available online 10 September 2024
The utilization of low-salinity waterflooding as a promising enhanced oil recovery method has exhibited exciting results in various experiments conducted at different scales. For carbonate rock, pore-scale...
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A technical review of CO2 flooding sweep-characteristics research advance and sweep-extend technology
Available online 7 September 2024
The utilization and storage of CO2 emissions from oil production and consumption in the upstream oil industry will contribute to sustainable development. CO2 flooding is the key technology for the upstream...
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Control and prediction of bedding-parallel fractures in fine-grained sedimentary rocks: A case from the Permian Lucaogou Formation in Jimusar Sag, Junggar Basin, Western China
Available online 6 September 2024
The fine-grained sedimentary rocks have numerous bedding-parallel fractures that are essential for the migration, enrichment, and efficient development of oil and gas. However, because of their variety...
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