A5101712135- Drilling and Well Engineering
- Corrosion Behavior and Inhibition
- Hydraulic Fracturing and Reservoir Analysis
- Hydrogen embrittlement and corrosion behaviors in metals
- Concrete Corrosion and Durability
- Petroleum Processing and Analysis
- Molecular Sensors and Ion Detection
- Reservoir Engineering and Simulation Methods
- Crystallography and molecular interactions
- Seismic Imaging and Inversion Techniques
- Oil and Gas Production Techniques
- Magnesium Oxide Properties and Applications
- Ionic liquids properties and applications
- Inorganic Chemistry and Materials
- Structural Integrity and Reliability Analysis
- Micro and Nano Robotics
- Machine Learning in Materials Science
- Enhanced Oil Recovery Techniques
- Laser-Plasma Interactions and Diagnostics
- Tunneling and Rock Mechanics
- Geophysical Methods and Applications
- Infrastructure Maintenance and Monitoring
- Epoxy Resin Curing Processes
- Magnetic confinement fusion research
- Pickering emulsions and particle stabilization
Jilin University
2024-2025
Jilin Medical University
2025
State Key Laboratory of Superhard Materials
2024
Union Hospital
2024
Huazhong University of Science and Technology
2024
China University of Petroleum, East China
2019-2024
Hohai University
2024
Changsha University of Science and Technology
2024
Tianjin Energy Investment Group (China)
2024
Chinese Academy of Sciences
2023
A reliable and accurate wellbore heat transfer model is essential for making critical decisions during deepwater drilling operations. This study develops a transient coupled flow the coexistence of overflow lost circulation simulation in drilling. Through established theoretical model, this paper studies influence gas influx, circulation, influx on temperature distribution migration analyzes development under different engineering parameters. The results show that expansion after mainly...
The recent discovery of crystalline pentazolates marks a major advance in polynitrogen chemistry and raises prospects making the long-touted potent propellant N5+N5– salt. However, despite synthesis cyclo-N5– anions pentazolates, countercation cyclo-N5+ remains elusive due to strong oxidizing power pentazole ion; moreover, pure salt is known be unstable. Here, we devise new strategy for rare cations assembling long-sought tailored ionic compounds, wherein negative/positive host ions act as...
The energy landscape of sodium chloride-nitrogen mixtures has been comprehensively explored to examine the ability formation unknown compounds under pressures up 100 GPa, using swarm-intelligence structure prediction methodology and first-principles calculations. We identified a thermodynamically stable <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:msub><a:mi>NaN</a:mi><a:mn>5</a:mn></a:msub><a:msub><a:mi>ClN</a:mi><a:mn>5</a:mn></a:msub></a:mrow></a:math> compound...
Due to the complex and changing drilling conditions large scale of logging data, it is extremely difficult process data in real time identify dangerous working conditions. Based on multi-classification intelligent algorithm Stacking model fusion, 24 h actual an XX well are classified identified. The divided into standpipe connection, tripping out, in, Reaming, back circulation, drilling, other In fusion model, accuracy integrated base learner compared, confusion matrix multi-condition...
Programmable organization of functional inorganic nanoparticles (NPs) into well-defined hierarchical superstructures has raised considerable concern due to the enhanced magnetic, electronic, and optical properties arising from strong plasmonic coupling effect. However, spontaneous self-assembly NPs uniform superlattices with desired or tunable shape remains a formidable challenge. Herein, we report quaternization-assisted assembly gold (AuNPs) tethered polystyrene (PS) quaternized...
The statistical correlation among the elastic parameters is one of reasons why pre-stack inversion are commonly unstable. Based on previous studies, we proposed an improved decorrelation method. In this paper, used covariance matrix to convert correlative data into 'white data' through two linear transformations. method allows using L1 norm as regularization term including information. Therefore, use and add wave impedance constraint in objective function increase stability realize...
With the rapid development of polymer materials industry and improvement people's environmental awareness, magnesium hydroxide has been widely used in due to its high decomposition temperature, non-toxic smoke suppression, advantages neutralizing harmful gases produced by combustion. However, conventional preparation methods exhibit several issues, including hydrophilicity, elevated polarity, limited compatibility with polymers. This research proposes an improved method adding sodium...
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The recent discovery of crystalline pentazolates marks a major advance in polynitrogen science and raises prospects making the long-touted potent propellant N$_5$$^{+}$N$_5$$^{-}$ salt. However, despite synthesis cyclo-N$_5$$^{-}$ anion pentazolates, counter cation cyclo-N$_5$$^{+}$ remains elusive due to strong oxidizing power pentazole ion; moreover, pure salt is known be unstable. Here, we devise new strategy for rare assembling long-sought tailored ionic compounds, wherein...
Abstract The aim of this research was to investigate asphalt effects on the storage stability, mechanical properties and micro‐properties cold‐mixed epoxy binder (CEAB). Firstly, four CEAB were prepared with base types miscibility analyses performed by fluorescence microscopy (FM). Then, cured resin (ER) treated ultraviolet aging. Tensile test, dynamic analysis (DMA), scanning electron (SEM), Fourier transform infrared (FTIR) spectroscopy applied clarify aged unaged CEAB. Also, bending beam...
Summary It is often essential to provide backpressure the wellbore by changing opening size of choke valve when a gas kick detected during managed pressure drilling (MPD), which maintains in bottom hole. In this study, mathematical model was developed explain how waves spread and weaken MPD there gas-liquid two-phase flow. The founded on flow model, thoroughly accounts for gravity, shear force, interphase interactions between liquid phases. small perturbation theory used compute wave’s...
The running of subway train leads to the sharp fluctuation pipe-to-soil potential nearby buried pipeline. How accurately describe characteristics into regular waveform is very important for study corrosion. In this paper, effects different interference waveforms on pitting behavior X70 steel in weakly alkaline soil simulated solution were studied. experimental results show that average corrosion rate and under are quite different, which related passivation state metal surface. film generated...
This paper investigates the effect of Si—OH groups on dielectric property and leakage current SiCOH low constant films deposited by decamethylcyclopentasioxane (D5) electron cyclotron resonance plasma. The results show that increasing content in can lead to k, decreasing rise dispersion. k value is result compensation originated from cage strong polarization groups. at high due connecting probability p networks because break terminal In case ionization degree D5 plasma, more form Si—O—Si...
Under the high-pressure and low-temperature environment of deep sea, wax deposition will occur in wellbore. This study discusses effect gas–liquid two-phase bubbly flow on deposition. In this study, experiments a vertical pipelines were carried out using waxy white oil air as experimental medium. The results show that under bubble pattern, within short period time from start deposition, it rapidly accumulates to peak, then cuts off part it, presents simple harmonic dynamic trend until final...
Experiment on suppressing fishbone activities is carried out in HL-2A tokamak by electron cyclotron resonance heating (ECRH). To achieve multiple deposition locations of ECRH, the magnetic field a range 1.22–1.4 T from shot to shot. It found that modes exhibit different characteristics at radial locations. With same injected power, effect off-axis ECRH much better than on-axis heating. The can be completely suppressed when deposited nearby <i>q</i> = 1 rational surface, but would...