https://cyberleninka.org/article/n/768408.pdf

Mechanical properties of graphene and graphene-based nanocomposites

Thermal Conductivity of Polymer-Based Composites: Fundamentals and Applications

Grafting of epoxy chains onto graphene oxide for epoxy composites with improved mechanical and thermal properties

Composites science and technology

Carbon fiber surfaces and composite interphases

Novel EPE co-extruded encapsulating films with UV down-conversion power gain effect for highly efficient solar cells

Effects of uniaxial strain on the electronic properties of cuprous oxide single-crystal films

Rate-dependent properties of resistance-welded carbon fiber-reinforced polyetheretherketone joints: simulations and experiments

Following the application of polymer flooding in Daqing Oilfield, the heterogeneity between different layers has intensified, resulting in the formation of more favorable seepage channels and cross-flow of displacement fluids. Consequently, the circulation efficiency has decreased, necessitating the exploration of methods to enhance oil recovery. This paper focuses on experimental research utilizing a newly developed precrosslinked particle gel (PPG) combined with alkali surfactant polymer (ASP) to create a heterogeneous composite system. This study aims to improve the efficiency of heterogeneous system flooding after polymer flooding. The addition of PPG particles enhances the viscoelasticity of the ASP system, reduces the interfacial tension between the heterogeneous system and crude oil, and provides excellent stability. The heterogeneous system has high resistance and residual resistance coefficients during the migration process in a long core model, achieving an improvement rate of up to 90.1% under the permeability ratio of 9 between high and low permeability layers. Employing heterogeneous system flooding after polymer flooding can increase oil recovery by 14.6%. Furthermore, the oil recovery rate of low permeability layers can reach 28.6%. The experimental results confirm that the application of PPG/ASP heterogeneous flooding after polymer flooding can effectively plug high-flow seepage channels and improve oil washing efficiency. These findings hold significant implications for further reservoir development after polymer flooding.

https://www.mdpi.com/2310-2861/9/5/427/pdf?version=1684508695

Experimental Study on Enhanced Oil Recovery of PPG/ASP Heterogeneous System after Polymer Flooding

A three-dimensional computational model based on the finite element method was developed to predict the thermal properties of randomly distributed multi-walled carbon nanotube (MWCNT)/polymer composites. The numerical results agree very well with the experimental data for MWCNT/epoxy composites with the MWCNT loading below ~10 vol% at the interfacial thermal resistance of ~1.0×10-8 m2K/W, which may give insight into the relationship between the thermal behavior of MWCNT-matrix interfaces and the thermal conductivity of composites. This model is also a useful tool to evaluate the effects of MWCNT-matrix interfacial thermal resistance, volume fraction, thermal conductivity and diameter of MWCNTs on the thermal conductivity of other types of MWCNT/ polymer composites.

Xinyu Fan

Papers

Novel EPE co-extruded encapsulating films with UV down-conversion power gain effect for highly efficient solar cells

Effects of uniaxial strain on the electronic properties of cuprous oxide single-crystal films

Rate-dependent properties of resistance-welded carbon fiber-reinforced polyetheretherketone joints: simulations and experiments

Experimental Study on Enhanced Oil Recovery of PPG/ASP Heterogeneous System after Polymer Flooding

Thermal Modeling of Randomly Distributed Multi-Walled Carbon Nanotube/Polymer Composites