A5033638745- Dyeing and Modifying Textile Fibers
- High-Velocity Impact and Material Behavior
- Energetic Materials and Combustion
- Hydraulic Fracturing and Reservoir Analysis
- Structural Response to Dynamic Loads
- Drilling and Well Engineering
- Pigment Synthesis and Properties
- Oil and Gas Production Techniques
- Polymer composites and self-healing
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- Advanced Cellulose Research Studies
- Hydrocarbon exploration and reservoir analysis
- Microplastics and Plastic Pollution
- Electromagnetic Launch and Propulsion Technology
- Reservoir Engineering and Simulation Methods
- Microstructure and mechanical properties
- High Entropy Alloys Studies
- Gear and Bearing Dynamics Analysis
- Silicone and Siloxane Chemistry
- Metal and Thin Film Mechanics
- Silk-based biomaterials and applications
- Advanced Sensor and Energy Harvesting Materials
- Surface Modification and Superhydrophobicity
- Hydrogels: synthesis, properties, applications
China National Offshore Oil Corporation (China)
2024
Donghua University
2021-2024
Northwest Institute of Nuclear Technology
2020-2024
Abstract The objective of this paper is to review the evolution producer acid design and well performance different formulations in an offshore oilfield China. focus on addressing persistent near wellbore plugging challenges encountered after water breakthrough. Over past 15 years, stimulation studied oil field has experienced five major modifications since 2007. Initially, considered potential causes only. However, evaluating identifying new arising from stimulation, optimized process was...
In this study, a novel medium-heavy alloy (MHA) of 56Ni-38 W-5Co-1Ta was prepared using conventional casting and forging methods. This NiW exhibits unique combination medium density, high strength ductility under quasi-static loading conditions. the dynamic mechanical behaviors deformation mechanisms were systematically investigated. The exhibited that yield increase form ~1.6 GPa (1 × 10−3 s−1) to ~2.0 (3 103 owing formation accumulation nano-sized twinning at condition. Although twin...
The elliptical cross-section ogive-nose projectile (ECOP) has recently attracted attention because it is well suited to the flattened shape of earth-penetrating weapons. However, penetration performance ECOPs not been completely understood. objective this study was investigate into concrete targets using a theoretical method. A general geometric model introduced, and closed-form equations were derived according dynamic cavity-expansion theory. validated by comparing predicted depths with...
Abstract This study investigates the evolution of acid stimulation to remove near wellbore damage in producers at Penglai Oilfield which is largest offshore oilfield China. The near-wellbore plugging has been observed certain wells within unconsolidated sandstone reservoir. So far, producer performed over 200 wells. paper will review design change, lessons learned, current best practices and challenges stimulations. Producer was first executed two through coiled tubing 2007 with positive...
Abstract The resorcinol diglycidyl acrylate (RDA) is firmly introduced to the surface of polyester (PET) fibers by a simple dip‐rolling and baking method, free radical polymerization reaction initiated on PET fabrics under ultraviolet light (UV) obtain three hydrogel layers with different structure, including polyacrylamide (PAAM), polyacrylic acid (PAAC) poly‐N‐isopropylacrylamide (PNIPAAM). It shown that pretreatment‐UV grafting method can be used porous structure fabric, all have better...
A method combining physics model with machine learning is proposed to address the issue of insufficient data and large variation oblique penetration experiments, which achieves a modelized description process. The model, based on cavity expansion theory local surface force method, enhanced both in accuracy effectiveness by means radial analytical integration axial differential approximation throughout calculation along projectile. Machine partial least square (PLS) artificial neural network...
A general geometric model of the elliptical cross-section double-ogive-nose projectile (ECDP) was established, and expression penetration resistance obtained. Based on special shape process characteristics ECDP, a three-stage constructed, closed-form equations were derived. Three ECDPs with major–minor axis ratio 1.5 launched by 130 mm gas-gun to impact plain concrete targets oblique angle 10° at nominal striking velocity 650 m/s, experimental data such as depth failure characteristic...
Abstract The complexity of penetrating projectile’s structure is not adequately considered in existing research penetration. Based on this actuality, high-speed reinforced concrete penetration experiment conducted and necking at the front end shank found to be most significant phenomenon. Mindlin–Herrmann rod theory adjusted with elastoplastic constitution finite element method applied calculation. Cavity expansion as longitudinal radial load estimation. calculation results denote that both...
Abstract A seawater-flooded offshore oilfield has experienced well plugging issues causing production decline. Fines migration was the assumed cause for many years. comprehensive study initiated to review initial completions, fines migration, and scaling as causal mechanisms. The concluded further evaluation of inorganic organic deposits appropriate, a flow assurance commissioned evaluate these possible This paper focuses on scale evaluation. Calcite (CaCO3) and/or barite (BaSO4) scales were...
Abstract Elliptical cross-sectional projectiles have recently attracted attention because they fit the flattened shape of earth-penetrating weapons. This study aims to investigate a rigid elliptical projectile with different geometrical characteristics penetration into semi-infinite concrete targets by implementing theoretical method. The general geometric models four types are introduced; closed-form equations then derived based on dynamic cavity-expansion theory. Furthermore, present...
Abstract Development of formaldehyde‐free stiffening finish agents is highly desirable in modern environmental‐friendly textile chemical processing technologies. Herein, two zwitterionic monomers are synthesized and used to synthesize a series acrylate soap‐free emulsions. The prepared emulsion was analyzed by nanoparticle size analyzer determine grain PDI. properties polymer film obtained from were characterized IR, DSC, DMA. results showed that monomer can greatly improve the glass...
Ni-W medium heavy alloy has unique combination of high density, better quasi-static and dynamic plastic deformation ability. Its mechanical behaviors mechanisms at room temperature were investigated by employing split Hopkinson tensile bar system. Under extreme loading conditions, the exhibits yield strength, which is intimately related to twinning accumulation. However, an obvious ductility loss also observed in even with strong strain hardening capability. Generally, plasticity fracture...
Abstract In this paper, acrylate-terminated polysiloxane was synthesised and used as raw materials for the synthesis of cationic core/shell acrylate emulsion, which applied binders in pigment dyeing cotton fabrics. The experimental results showed that: poly siloxane emulsion article is nano size 100nm. During film formation there are core-core shell-shell fusion phenomena between latex particles, same chain aggregates on surface film. When fabrics, dyed fabrics feel soft, soaping fastness...