A5020076501- Petroleum Processing and Analysis
- Enhanced Oil Recovery Techniques
- Pickering emulsions and particle stabilization
- Plant Disease Resistance and Genetics
- Advanced Polymer Synthesis and Characterization
- Hydrocarbon exploration and reservoir analysis
- Cognitive and developmental aspects of mathematical skills
- Mathematics Education and Teaching Techniques
- Subcritical and Supercritical Water Processes
- Thermochemical Biomass Conversion Processes
- Chemical Synthesis and Characterization
- Radioactive element chemistry and processing
- Drilling and Well Engineering
- Mathematics Education and Pedagogy
- Dendrimers and Hyperbranched Polymers
- Coal Properties and Utilization
- Geological formations and processes
- Polymer composites and self-healing
- Educational Technology and Assessment
- Garlic and Onion Studies
- Plant Ecology and Soil Science
- Forest, Soil, and Plant Ecology in China
- Traffic control and management
- Rice Cultivation and Yield Improvement
- Nuclear materials and radiation effects
Southwest Petroleum University
2018-2025
Beijing Normal University
2023-2024
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2020-2024
Chongqing University
2017
Jiangsu Maritime Institute
2010
Tobacco Research Institute
2007-2009
Summary The in-situ combustion (ISC) technique has emerged as a significant approach for shale oil production. However, currently, there is lack of experimental evidence supporting the stable propagation front within fractured shale. This study aimed to investigate characteristics by using self-designed tube (CT) and an scheme. Subsequently, analysis structure properties was conducted. results demonstrated that while could propagate through with single fracture width approximately 43 μm,...
Water flooding reservoirs are susceptible to a number of challenges, including an increase in reservoir heterogeneity and elevated water content over the course production. This can significantly diminish crude oil recovery efficiency. In order address issue low efficiency, new approach synthesizing amphiphilic Janus TiO2 nanoparticle is presented. The Pickering emulsion method, utilizing sucrose stearate (SE-15) as dispersant, allows construction in-situ emulsified nanofluid (Janus...
The Bohai oilfield is a typical common heavy oil reservoir with high water cut after long-term injection development. Considering the characteristics of selective plugging, polymer-enhanced foam (AOS–DYG) flooding was adopted in this study as subsequent enhanced recovery (EOR) technology Sea. A polymer can promote stability by reducing drainage rate and enhancing interfacial adsorption behavior. As result its low cost abundant sources, nitrogen selected air source paper. interaction between...
A new type of chitosan-modified hyperbranched polymer (named HPDACS) was synthesized through the free-radical polymerization surface-modified chitosan with acrylic acid (AA) and acrylamide (AM) to achieve an enhanced oil recovery. The optimal conditions HPDACS were explored its structure characterized by Fourier-transform infrared spectroscopy, hydrogen nuclear magnetic resonance, environmental scanning electron microscopy. solution properties in ultrapure water simulated brine deeply...
The α -zirconium phosphate ( -ZrP) and hydrophobically modified -ZrP-I) were prepared. grafting of octadecyl isocyanate was confirmed by Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), thermogravimetric analysis (TGA). dispersion -ZrP-I studied environmental scanning electron microscopy (SEM). wettability determined Kruss DSA30. Then, the effects decompression augmented injection have been studied. results water flooding experiments show that appropriate concentration has...
Abstract This study introduced a chitosan‐modified hyperbranched polymer (HPDACS). The biological oxygen demand, chemical and biodegradability of HPDACS under different water quality were measured static conditions, as well the concentration changes before after degradation. Environmental scanning electron microscopy (ESEM) was used to observe micromorphology biodegradability, viscosity change, molecular weight change passing through porous medium measured. results compared with partially...
A simple, rapid, small-scale microbioassay for infection of tobacco seedlings by Phytophthora parasitica var. nicotianae was developed here. This assay uses cultivated in petri dishes a standardized method quantitation initial zoospore inocula and high-throughput screening antagonistic bacteria. Zoospore between 10(2) to 10(5) spores per dish were inoculated on 14-day-old the susceptibility test. The optimum established be ten thousand zoospores. One hundred fifty pure culture bacteria with...
Symbolic ability and situational are two important mathematical skills. Within the realm of education theory, symbolic is often regarded as a more advanced skill compared to ability. However, empirical research unveil developmental trajectories these abilities still lacking.This study employed arithmetic calculation tasks measure students' word problem composition their The were explored among sixth-grade primary school students seventh eighth-grade middle students. results revealed that...
Foam is commonly used in tertiary oil recovery because it plugs specific areas. thermodynamically unstable owing to reservoir complexity. stability the key research focus. This study examined foaming volume and half-life of a sodium α-olefin sulfonate (AOS)-diutan gum (DYG) foam under different temperatures, salinities, saturation conditions. Dynamic behavior drainage process was studied. The rate constant (Kd) determined using kinetic model varied situations. activation energy calculated by...
Abstract The residual resistance factor (RRF) is an important parameter expressing the mobility control capability of polymer, and it related to polymer molecular structure. This study investigated ability three polymers with different structures establish RRF in a one‐dimensional sand pack model at permeabilities. In addition, static adsorption capacity on rock surface was investigated, mechanism retention porous media explored by changing wettability surface. Furthermore, microscopic...
目的合成聚乙烯亚胺/聚己内酯/聚乙二醇/聚己内酯/聚乙烯亚胺（PEI-PCL-PEG-PCL-PEI），以其为载体制备聚合物载胰岛素（INS）缓释纳米粒，考察和优化其体外释药性能。 方法利用迈克尔加成反应合成该聚合物，用傅里叶红外光谱（FT-IR）和核磁共振氢谱（1H-NMR）对其结构进行表征，荧光探针法测定其临界聚集浓度（CAC）；采用溶剂挥发法制备聚合物载INS纳米粒，透射电镜观察其形态，激光散射法测定粒径及多分散指数，Bradford法测定载药情况并考察体外释放行为。 结果以PEI10K-PCL4K-PEG2K-PCL4K-PEI10K为INS载体，投药比为40% wt时制备的载INS纳米粒药物利用度最大，包封率为（57.23±0.25）%，粒径为175.30±19.51 nm，48 h末的累计释放率为50.66%；此外还可通过调整聚合物不同嵌段的比例进一步降低药物突释效应。 结论以PEI-PCL-PEG-PCL-PEI为载体制备的载INS纳米粒包封率、载药量较高，体外释药缓释效应明显且PEI的引入在一定程度上有助于减少突释效应。