scholarly journals Applications of Surfactants and Nanoparticles in Enhanced Oil Recovery Processes

2022 ◽  
Author(s):  
Christian A. Paternina
Keyword(s):  
Porous Medium ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Main Mechanism ◽  
Surfactant Adsorption ◽  
Water Interface ◽  
Recovery Processes ◽  
Novel Technology ◽  
Oil Water ◽  
Rock Minerals

The surfactant injection is considered as the EOR (Enhanced Oil Recovery) with the highest potential to recover oil from reservoirs due to its ability to reduce interfacial forces into the porous medium. However, the adsorption of this type of chemical on the surface of rocks is the main problem when a surfactant injection project is applied since the surfactant molecules would rather be placed on rock minerals instead of being the oil–water interface. Based on this fact, this chapter would be discussed the significance of surfactant injection as an EOR method, the types of surfactants used, the main mechanism and parameters involved in the surfactant adsorption on the rock, and its consequences in oil recovery. Likewise, the addition of nanoparticles to inhibit the adsorption of surfactants is another topic that will be covered as a novel technology to improve the efficiency of the EOR process.

Application of Molecular Simulations to CO2-Enhanced Oil Recovery: Phase Equilibria and Interfacial Phenomena

SPE Journal ◽  
2013 ◽  
Vol 18 (02) ◽  
pp. 319-330 ◽  
Author(s):  
Dai Makimura ◽  
Makoto Kunieda ◽  
Yunfeng Liang ◽  
Toshifumi Matsuoka ◽  
Satoru Takahashi ◽  
...  
Keyword(s):  
Phase Equilibria ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
High Pressures ◽  
Co2 Enrichment ◽  
Interfacial Phenomena ◽  
Interfacial Region ◽  
Water Interface ◽  
Oil Water ◽  
Co2 Eor

Summary Molecular simulation is a powerful technique for obtaining thermodynamic properties of a system of given composition at a specific temperature and pressure, and it enables us to visualize microscopic phenomena. In this work, we used simulations to study interfacial phenomena and phase equilibria, which are important to CO2-enhanced oil recovery (EOR). We conducted molecular dynamics (MD) simulation of an oil/water interface in the presence of CO2. It was found that CO2 was enriched at the interfacial region under all thermal conditions. Whereas the oil/water interfacial tension (IFT) increases with pressure, CO2 reduces the IFT by approximately one-third at low pressure and one-half at higher pressure. Further analysis on the basis of our MD trajectories shows that the O=C=O bonds to the water with a “T-shaped” structure, which provides the mechanism for CO2 enrichment at the oil/water interface. The residual nonnegligible IFT at high pressures implies that the connate or injected water in a reservoir strongly influences the transport of CO2/oil solutes in that reservoir. We used Gibbs ensemble Monte Carlo (GEMC) simulation to compute phase equilibria and obtain ternary phase diagrams of such systems as CO2/n-butane/N2 and CO2/n-butane/n-decane. Simulating hydrocarbon fluids with a mixture of CO2 and N2 enables us to evaluate the effects of N2 impurity on CO2-EOR. It also enables us to study the phase behavior, which is routinely used to evaluate the minimum miscibility pressure (MMP). We chose these two systems because experimental data are available for them. Our calculated phase equilibria are in fair agreement with experiments. We also discuss possible ways to improve the predictive capability for CO2/hydrocarbon systems. GEMC and MD simulations of systems with heavier hydrocarbons are straightforward and enable us to combine molecular-level thinking with process considerations in CO2-EOR.

scholarly journals IN SILICO POTENTIAL ANALYSIS OF X6D MODEL OF PEPTIDE SURFACTANT FOR ENHANCED OIL RECOVERY

2018 ◽  
Vol 39 (2) ◽  
pp. 101-106
Author(s):  
Cut Nanda Sari ◽  
Usman Usman ◽  
Rukman Hertadi ◽  
Tegar Nurwahyu Wijaya ◽  
Leni Herlina ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Interfacial Tension ◽  
Molecular Dynamics Simulations ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Dynamics Simulation ◽  
Coarse Grained ◽  
Water Interface ◽  
Oil Water ◽  
Dynamics Simulations

Peptides and their derivatives can be applied in enhanced oil recovery (EOR) due to their ability to form an emulsion with hydrophobic molecules. However, peptide research for EOR application, either theoretical or computational studies, is still limited. The purpose of this research is to analyse the potency of the X6D model of surfactant peptide for EOR by molecular dynamics simulations in oil-water interface. Molecular dynamics simulation using GROMACS Software with Martini force field can assess a peptides ability for self-assembly and emulsification on a microscopic scale. Molecular dynamics simulations combined with coarse grained models will give information about the dynamics of peptide molecules in oil-water interface and the calculation of interfacial tension value. Four designs of X6D model: F6D, L6D, V6D, and I6D are simulated on the oil-water interface. The value of interfacial tension from simulation show the trend of F6D L6D I6D V6D. The results indicate that V6D has the greatest reduction in interfacial tension and has the stability until 90C with the salinity of at least 1M NaCl.

Microscale Interactions of Surfactant and Polymer Chemicals at Crude Oil-Water Interface for Enhanced Oil Recovery

2019 ◽  
Author(s):  
Subhash Ayirala ◽  
Zuoli Li ◽  
Rubia Mariath Mariath ◽  
Abdulkareem AlSofi ◽  
Zhenghe Xu ◽  
...  
Keyword(s):  
Crude Oil ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Water Interface ◽  
Oil Water
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