Dongxing Du
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View article: Numerical study of corrosion in high pressure vent pipelines at high sulfur natural gas stations considering liquid phase accumulation and erosion
Numerical study of corrosion in high pressure vent pipelines at high sulfur natural gas stations considering liquid phase accumulation and erosion Open
In high-sulfur natural gas stations, vent pipelines, especially at their elbows, experience acidic corrosion and erosion, which affects the safety of the pipelines. On-site wall thickness measurements of pipelines are empirical and random,…
View article: Mechanism exploration of the hydrodynamic trapping of hydrogen in geological formations via the pore-scale numerical studies
Mechanism exploration of the hydrodynamic trapping of hydrogen in geological formations via the pore-scale numerical studies Open
View article: Research on the regulation of neuronal activity and biomechanics by music therapy based on biosensing technology
Research on the regulation of neuronal activity and biomechanics by music therapy based on biosensing technology Open
Music therapy is acknowledged as one of the effective non-pharmacological interventions to regulate neuronal function enhancing mental health. This study examines them with biosensing technology, including EEG, HRV, GSR, and fNIRS to recor…
View article: Thermodynamic calculation studies on oil composition and water presence effect on the minimum miscibility pressure of the CO2/two-components oil system
Thermodynamic calculation studies on oil composition and water presence effect on the minimum miscibility pressure of the CO2/two-components oil system Open
Minimum Miscibility Pressure (MMP) is a key parameter for guiding the CO2 Enhanced Oil Recovery (EOR) as well as carbon geological storage applications. In this work, a thermodynamic calculation study is performed concerning the oil compos…
View article: ANN prediction of the CO<sub>2</sub> solubility in water and brine under reservoir conditions
ANN prediction of the CO<sub>2</sub> solubility in water and brine under reservoir conditions Open
Having accurate knowledge on CO2 solubility in reservoir liquids plays a pivotal role in geoenergy harvest and carbon capture, utilization, and storage (CCUS) applications. Data-driven works leveraging artificial neural networks (ANN) have…
View article: Feasibility Study on Magnetorheological Finishing of Thin Copper Substrate
Feasibility Study on Magnetorheological Finishing of Thin Copper Substrate Open
Thin copper substrates with high accuracy are highly required in precision physical experiments. However, even using double-sided lapping, the flatness is still limited due to the accuracy of lapping plate, process vibration and so on. Hen…
View article: Investigation on the effect of cryogenic treatment parameters on residual stress and machining deformation of Hydrogen-resistant Steel
Investigation on the effect of cryogenic treatment parameters on residual stress and machining deformation of Hydrogen-resistant Steel Open
Hydrogen resistant steel thin-walled components are widely used in various fields due to their advantages of high strength and toughness. The residual stress inside the material is a key factor affecting the deformation of hydrogen resista…
View article: Enhancement of solar panel power generation performance with a passive sun tracking system
Enhancement of solar panel power generation performance with a passive sun tracking system Open
In this paper, a solar tracking device that can continuously track the sun by adjusting the direction and angle of the solar panel in real time is designed and fabricated to improve the power generation efficiency of the solar cell panel. …
View article: Impact of water on miscibility characteristics of the CO2/n-hexadecane system using the pendant drop shape analysis method
Impact of water on miscibility characteristics of the CO2/n-hexadecane system using the pendant drop shape analysis method Open
Miscible CO2 flooding has shown bright prospects for improving oil recovery from unconventional reservoirs as well as for storing greenhouse gas in underground formations. Although the favorable water presence effect has been reported in t…
View article: Computational study of phase interface properties for energy extraction and storage process
Computational study of phase interface properties for energy extraction and storage process Open
The interactions between gas and liquid have an important role in energy extraction and storage. For example, the interfacial tension (IFT) between the two phases has an important effect on developing crude oil in low-permeability reservoi…
View article: Elliptical vibration cutting of large-size thin-walled curved surface parts of pure iron by using diamond tool with active cutting edge shift
Elliptical vibration cutting of large-size thin-walled curved surface parts of pure iron by using diamond tool with active cutting edge shift Open
Large-size thin-walled curved surface parts of pure iron are crucial in aerospace, national defense, energy and precision physical experiments. However, the high machining accuracy and surface quality are difficult to achieve due to the se…
View article: Laboratory Study on the Oil Displacement Process in Low-Permeability Cores with Different Injection Fluids
Laboratory Study on the Oil Displacement Process in Low-Permeability Cores with Different Injection Fluids Open
Although flooding technology has found wide application in low-permeability reservoir development practices, the oil recovery enhancement mechanisms for different injection fluids still lack specific focus based on comprehensive investigat…
View article: Multi-parameter screening study on the static properties of nanoparticle-stabilized CO2 foam near the CO2 critical point
Multi-parameter screening study on the static properties of nanoparticle-stabilized CO2 foam near the CO2 critical point Open
The important role of nanoparticles (NPs) on foam stabilization under harsh geological conditions has been well recognized. In this paper, the Orthogonal Experimental Design (OED) method is adopted to investigate the synergy effects of six…
View article: Effects of low-intensity DC magnetic field on the freezing process of aqueous solution and beef
Effects of low-intensity DC magnetic field on the freezing process of aqueous solution and beef Open
s In this paper, experiments were conducted to study the effect of weak magnetic fields on the freezing process of deionized water and physiological normal saline. The results show that different magnetic field strengths have different eff…
View article: Effect of Cryogenic Treatment on Internal Residual Stresses of Hydrogen-Resistant Steel
Effect of Cryogenic Treatment on Internal Residual Stresses of Hydrogen-Resistant Steel Open
To reduce the influence of internal residual stress on the processing deformation of thin-walled hydrogen-resistant steel components, combined aging cryogenic and high-temperature treatment was used to eliminate the residual stress, and th…
View article: Sedapp v2021: a nonlinear diffusion-based forward stratigraphic model for shallow marine environments
Sedapp v2021: a nonlinear diffusion-based forward stratigraphic model for shallow marine environments Open
The formation of stratigraphy in shallow marine environments has long been an important topic within the geologic community. Although many advances have been made in the field of forward stratigraphic modeling (FSM), there are still some a…
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View article: Experimental study on residue oil distribution after the supercritical CO2 huff-n-puff process in low permeability cores with Nuclear Magnetic Resonance (NMR)
Experimental study on residue oil distribution after the supercritical CO2 huff-n-puff process in low permeability cores with Nuclear Magnetic Resonance (NMR) Open
In this paper, two sandstone cores with permeabilities of 1.7mD and 2.6mD were employed and the ScCO2 huff-n-puff processes were carried out to check the oil recovery efficiency as well as the oil mobilization laws under the conditions of …
View article: Laboratory study on oil recovery characteristics of carbonated water huff-n-puff process in tight cores under reservoir condition
Laboratory study on oil recovery characteristics of carbonated water huff-n-puff process in tight cores under reservoir condition Open
Although CO2 huff-n-puff process has been widely employed as an efficient oil recovery and carbon storage technique in unconventional reservoirs, it suffers from the disadvantages of lack of availability near a large field and formation le…
View article: Investigation on Wear Characteristics of Cemented Carbide Tools in Finish Turning Spherical Shells of Pure Iron
Investigation on Wear Characteristics of Cemented Carbide Tools in Finish Turning Spherical Shells of Pure Iron Open
A thin-walled spherical shell made of pure iron material is a key part of precision physical experiments. Tool wear is an important factor restricting its geometric accuracy. And tool wear characteristics of curved surface parts are signif…
View article: A New Method for Precision Measurement of Wall-Thickness of Thin-Walled Spherical Shell Parts
A New Method for Precision Measurement of Wall-Thickness of Thin-Walled Spherical Shell Parts Open
Thin-walled parts are widely used in shock wave and detonation physics experiments, which require high surface accuracy and equal thickness. In order to obtain the wall thickness of thin-walled spherical shell parts accurately, a new measu…
View article: Investigation on Magnetorheological Finishing of thin Copper Substrate
Investigation on Magnetorheological Finishing of thin Copper Substrate Open
Thin copper substrates in precision physical experiments are commonly machined by double-sided lapping to obtain high flatness. However, the flatness is limited by the accuracy of lapping plate, process vibration and so on in double-sided …
View article: Sedapp: a non-linear diffusion-based forward stratigraphicmodel for shallow marine environments
Sedapp: a non-linear diffusion-based forward stratigraphicmodel for shallow marine environments Open
The formation of stratigraphy in shallow marine environments has long been an important topic within the geologic community. Although many advances have been made in the field of forward stratigraphic modelling (FSM), there are still some …
View article: Surface Physical and Chemical Modification of Pure Iron by Using Atmospheric Pressure Plasma Treatment
Surface Physical and Chemical Modification of Pure Iron by Using Atmospheric Pressure Plasma Treatment Open
To investigate the mechanism of surface modification of pure iron by atmospheric pressure plasma treatment (APPT), the surface wettability of pure iron was characterized by using a contact-angle measuring instrument, and the mechanical pro…
View article: Base level changes based on Basin Filling Modelling: a case study from the Paleocene Lishui Sag, East China Sea Basin
Base level changes based on Basin Filling Modelling: a case study from the Paleocene Lishui Sag, East China Sea Basin Open
Estimation of base level changes in geological records is an important topic for petroleum geologists. Taking the Paleocene Upper Lingfeng Member of Lishui Sag as an example, this paper conducted a base level reconstruction based on Basin …
View article: Parameter Screening Study for Optimizing the Static Properties of Nanoparticle-Stabilized CO<sub>2</sub> Foam Based on Orthogonal Experimental Design
Parameter Screening Study for Optimizing the Static Properties of Nanoparticle-Stabilized CO<sub>2</sub> Foam Based on Orthogonal Experimental Design Open
Nanoparticle (NP)-stabilized foam technology has found potential applications in CO2 enhanced oil recovery (EOR) and greenhouse gas geological storage practices and accordingly attracts lots of research interest. To screen the o…
View article: Base Level Changes based on Basin Filling Modelling: a Case Study from the Paleocene Lishui Sag, East China Sea Basin
Base Level Changes based on Basin Filling Modelling: a Case Study from the Paleocene Lishui Sag, East China Sea Basin Open
Estimation of base level changes in geological records is an important topic for petroleum geologists. Taking the Paleocene Upper Lingfeng Member of Lishui Sag as an example, this paper conducted a base level reconstruction based on Basin …
View article: A Novel Supercritical CO2 Foam System Stabilized With a Mixture of Zwitterionic Surfactant and Silica Nanoparticles for Enhanced Oil Recovery
A Novel Supercritical CO2 Foam System Stabilized With a Mixture of Zwitterionic Surfactant and Silica Nanoparticles for Enhanced Oil Recovery Open
In order to improve the CO2 foam stability at high temperature and salinity, hydrophilic silica nanoparticles (NPs) were added into a dilute zwitterionic surfactant solution to stabilize supercritical CO2 (SC-CO2…
View article: Experimental Study on Factors Affecting the Performance of Foamy Oil Recovery
Experimental Study on Factors Affecting the Performance of Foamy Oil Recovery Open
The flow characteristics of dissolved gas driven processes in some heavy oil reservoirs, such as low gas–oil ratio and higher oil recovery rate than expected, are quite different from conventional oil production processes. Foamy oil is con…
View article: INVESTIGATION OF DYNAMIC TEXTURE AND FLOW CHARACTERISTICS OF FOAM TRANSPORT IN POROUS MEDIA BASED ON FRACTAL THEORY
INVESTIGATION OF DYNAMIC TEXTURE AND FLOW CHARACTERISTICS OF FOAM TRANSPORT IN POROUS MEDIA BASED ON FRACTAL THEORY Open
Foam fluid has found wide applications in oilfield development, such as profile control, water plugging, gas channeling control, fracturing, and so on. As a non-Newtonian fluid, the successful application of foam is significantly influence…