A5103151063- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Enhanced Oil Recovery Techniques
- Particle accelerators and beam dynamics
- High-pressure geophysics and materials
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Drilling and Well Engineering
- Radiation Therapy and Dosimetry
- Particle Detector Development and Performance
- Financial Markets and Investment Strategies
- Reservoir Engineering and Simulation Methods
- Superconducting Materials and Applications
- Advanced X-ray Imaging Techniques
- Petroleum Processing and Analysis
- NMR spectroscopy and applications
- Advanced X-ray and CT Imaging
- Nuclear reactor physics and engineering
- Advanced Photocatalysis Techniques
- Gyrotron and Vacuum Electronics Research
- Methane Hydrates and Related Phenomena
- Advancements in Photolithography Techniques
- Medical Imaging Techniques and Applications
China University of Petroleum, Beijing
2019-2024
Tsinghua University
2014-2023
China University of Petroleum, East China
2017-2023
Quinnipiac University
2020-2022
Northwest Institute of Nuclear Technology
2022
Ningbo Dahongying University
2019
University of Oklahoma
2017
Institute of Porous Flow and Fluid Mechanics
2015-2016
Research Institute of Petroleum Exploration and Development
2009-2016
Chinese Academy of Sciences
2015
Reversible emulsion drilling fluids can concentrate the advantages of water-based and oil-based fluids. Most existing reversible fluid systems are surfactant-based emulsifier systems, which have disadvantage poor stability. However, use modified nanoparticles as emulsifiers significantly enhance stability fluids, but ordinary disadvantages high cost easily causing environmental pollution. In order to solve shortcomings system, nanocrystalline cellulose was considered be used an prepare...
The rapid growth of global energy demand necessitates high-performance water-based drilling fluids (WDFs) with excellent-plugging performance in the deep excavation shale gas formation. Herein, we report an organic-inorganic nanocomposite (NS-D) as a plugging agent WDFs to plug nanoporous and abate hydration expansion by integrating advantages inorganic polymer nano agents. results Fourier Transform infrared spectroscopy (FTIR) proton nuclear magnetic resonance (H-NMR) revealed that NS-D had...
Tight reservoirs are considered one of the unconventional hydrocarbon with low permeability and porosity, directly affecting oil production rate rather than conventional reservoirs. Thereby, optimum enhanced recovery methods would help petroleum industries produce more volumes from these In this study, different chemical thermal recoveries such as surfactant alternating gas (SAG), water (WAG), foam flooding, carbon dioxide (continuous cyclic) were experimentally investigated to measure...
Taking low permeability cores of Daqing oilfield for example, the flow characteristics at velocity were studied by using self-designed micro-flux measuring instrument. Considering throat distribution and capillary model, thickness fluid boundary layer under different pressure gradient was calculated, mechanism influencing factors nonlinear percolation discussed. The study showed that curve ultra-low rocks nonlinear, apparent not a constant, which increased with gradient. absorption decreased...
Low-temperature adsorption experiment, high-speed centrifugal gas displacing water experiment and nuclear magnetic resonance (NMR) were conducted on sealed coring samples taken from Triassic Yanchang Formation Chang 7 tight oil reservoir of Northern Shaanxi Area, Odos Basin, to analyze the occurrence space quantitatively. Micro-capillary bound T2 (transversal relaxation time) spectra after 2.76 MPa centrifugation distribution micro-pores less than 50 nm obtained low-temperature both reflect...
Herein, we fabricated a ternary photocatalyst composed of CaFe2O4, multiwalled carbon nanotubes (CNTs) and graphitic nitride (g-C3N4) via simple hydrothermal route. CaFe2O4 acted as photosensitizer medium the CNT co-catalyst, which remarkably enhanced photocatalytic performances g-C3N4 towards degradation hexavalent chromium (Cr(vi)) antibiotic tetracycline (TC) under visible light irradiation. To investigate morphological topological features photocatalyst, field-emission scanning electron...
Focusing on problems of rapid production decline and poor development effect after volume fracturing the shale oil reservoir, a method SC-HNP (surfactant slug assisting CO2 huff puff) was proposed. Taking CQ block (CQ, reservoir name) as an example, laboratory experiments were carried out using typical samples core samples, numerical simulation model established based experimental results. The performance recovery mechanism analyzed, by well predicted. results showed that (1) degree...
To select the optimum methods, such criteria like reservoir heterogeneity, pressure, temperature, crude oil type API (American Petroleum Institute), and brine salinity. EOR methods contained water flooding, chemical nanofluids injection, CO2 (carbon dioxide) SAGD/WAG (Surfactant assisted gas drainage/water alternative injection), hybrid injection. Multi-criteria decision-making of FTOPSIS (a fuzzy technique for order preference by similarity to ideal solution) FAHP (fuzzy analytic hierarchy...
This article documents the motivation, construction, and profitability of an investment strategy based on investor attention in options market. Using option volume after a 1-week dormant period as proxy for attention, author shows that heightened has rich implications. A portfolio constructed basis spike events immediately generates abnormal return 68 points monthly (8.16% annualized basis). is robust to risk adjustment using standard asset pricing models. The author's findings constitute...
A new design of the boron-lined gaseous neutron detector composed a honeycomb converter and an electron multiplier is proposed in this paper. The motivation for research was to decrease manufacturing difficulty improve robustness detector. numerous anode wires traditional designs were removed, gas (GEM) used as multiplier. To drive ionized electrons produced inside structure out incident surface GEM, drift electric field applied holes structure. principles discussed. Geant4, Maxwell11,...
The paucity of neutron facilities accessible by university researchers in China has led to the push for development modern sources. Working tandem with world community that increasingly recognizes value compact accelerator-drive sources (CANS), Tsinghua University launched Compact Pulsed Hadron Source Project which will provide a medium-flux source education, basic multi-disciplinary research, and accelerator-neutronics R&D. We first describe initial design expected performance CPHS. Then...
We combine the recently proposed spherical harmonic expansion (SHE) method [Phys. Rev. X 2017, 7, 031003] with a modified network model to analyze small-angle neutron scattering (SANS) spectra from deformed entangled polymers. Focusing on leading anisotropic component and isotropic in SHE, analysis gives reliable value of stretch ratio end-to-end vector, reasonable estimation radius gyration, single chain polymers undergoing uniaxial deformation relaxation. Moreover, it provides practical...