scholarly journals Obtaining and characterizing microemulsion systems containing Alkali-Surfactant-Polymer (ASP) for advanced oil recovery application

2021 ◽  
Vol 10 (5) ◽  
pp. e33010514807
Author(s):  
Helton Gomes Alves ◽  
Gregory Vinicius Bezerra de Oliveira ◽  
Flávia Freitas Viana ◽  
Marcos Allyson Felipe Rodrigues ◽  
Afonso Avelino Dantas Neto ◽  
...  
Keyword(s):  
Surface Tension ◽  
Oil Recovery ◽  
Rheological Behavior ◽  
Particle Diameter ◽  
Coconut Oil ◽  
Micellar Aggregates ◽  
Droplet Sizes ◽  
Slight Elevation ◽  
Polymeric Solutions ◽  
Experimental Values

Fluids in terms of rheological behavior can be classified into Newtonians and non-Newtonians. Newtonians are fluids that have unique and absolute viscosities, because the ratio between shear stress and shear rate is constant. In the oil industry, most fluids, such as microemulsions, oil and polymeric solutions, do not exhibit Newtonian behavior. To understand the behavior of chemical fluids, it is necessary to analyze some parameters to interpret their properties and applicability. In this context, the present work aims to obtain and characterize microemulsion systems containing Alkali, Surfactant, and Polymer, and verify their applicability in advanced oil recovery. Thus, we obtained five microemulsion systems consisting of saponified coconut oil (surfactant), Butan-1-ol (co-surfactant), kerosene (oil phase), Na2CO3 (alkali), water and different percentages of the polymer. The systems were characterized by analyzes of particle diameter, surface tension, viscosity and rheological behavior using mathematical models. Droplet sizes showed characteristic values of micellar aggregates. Surface tension presented a slight elevation when the percentage of polymer in the microemulsion increased. Through the rheological study, it was possible to observe that experimental values were better adjusted to the Ostwald-de Waele “power-law” model. As the percentage of polymer in the system increased, we calculated the apparent viscosity of the systems and observed an increasing change in viscosity values, a result of great interest to enhanced oil recovery studies.

scholarly journals STUDY OF THE SURFACE TENSION FACTOR AT THE BOUNDARY OIL - ASP SOLUTION FOR VARIOUS SURFACTANTS

2016 ◽  
pp. 86-90
Author(s):  
Z. M. Trumbetova ◽  
A. G. Zavodovskiy
Keyword(s):  
Surface Tension ◽  
Oil Recovery ◽  
Innovative Methods ◽  
Bottom Hole

It is proved that for oil recovery enhancement it is necessary to use innovative methods. One of these methods is ASP. In the course of the work implementation there was determined a dependence of the surface tension factor at the boundary oil - ASP solution on the solution components concentration and temperatures for two surfactants. The analysis of the dependencies data permitted to define the optimum ASP solution concentrations at temperature close to the temperature in the bottom-hole zone of the oil-bearing bed. Besides, the economic calculations of the investigated surfactants were made based on which some recommendations were offered on their use.

scholarly journals Production and characterization of sophorolipids produced by Candida bombicola from coconut oil

2016 ◽  
Vol 19 (4) ◽  
pp. 15-25
Author(s):  
Loan Quynh Le ◽  
Huy Duc Ngo ◽  
Khanh Quoc Hoang ◽  
Dung Hoang Nguyen ◽  
Dung Hoang Nguyen ◽  
...  
Keyword(s):  
Surface Tension ◽  
Coconut Oil ◽  
Environmentally Friendly ◽  
Candida Bombicola ◽  
Lower Toxicity ◽  
E Coli ◽  
Microbial Origin

The biosurfactants from microbial origin increasingly gained interests because of their application in many field and excellent properties compared to surfactants from chemical origin, such as the higher biodegradability, lower toxicity and environmentally friendly. Sophorolipids, biosurfactants of glycolipid groups are produced through the fermentation by nonpathogenic yeasts such as Candida bombicola. In this study, we investigated the production, surveyed properties of sophorolipids through fermentation by C. bombicola from coconut oil. The results showed that the yield of sophorolipid obtained after 7 days of culture was 14.6 g/L, the surface tension was 40 mN/m. The obtained sophorolipid showed ability to be resistant to some bacteria such as E. coli, B. subtilis, P. aeruginosa, and S. aureus. Through DPPH experiment, sophorolipids showed the scavenging acitivity with IC50 = 1.4063 mg/mL. These results showed that sophorolipids could be applied in cosmetics.

Prediction of the Condensation Coefficient on Horizontal Integral-Fin Tubes

1985 ◽  
Vol 107 (2) ◽  
pp. 369-376 ◽  
Author(s):  
R. L. Webb ◽  
T. M. Rudy ◽  
M. A. Kedzierski
Keyword(s):  
Surface Tension ◽  
Theoretical Model ◽  
Surface Tension Force ◽  
Tension Force ◽  
Condensation Coefficient ◽  
Film Drainage ◽  
Predicted Values ◽  
Experimental Values ◽  
Fin Tubes

A theoretical model is developed for prediction of the condensation coefficient on horizontal integral-fin tubes for both high and low surface tension fluids. The model includes the effects of surface tension on film drainage and on condensate retention between the fins. First, the fraction of the tube circumference that is flooded with condensate is calculated. Typically, the condensation coefficient in the flooded region is negligible compared to that of the unflooded region. Then the condensation coefficient on the unflooded portion is calculated, assuming that surface tension force drains the condensate from the fins. The model is used to predict the R-11 condensation coefficient on horizontal, integral-fin tubes having 748, 1024, and 1378 fpm. The predicted values are within ±20 percent of the experimental values.

Surface tension and rheological behavior of sal oil methyl ester biodiesel and its blend with petrodiesel fuel

Fuel ◽  
2016 ◽  
Vol 166 ◽  
pp. 130-142 ◽  
Author(s):  
Bhaskar Hajra ◽  
Mithilesh Kumar ◽  
Akhilendra K. Pathak ◽  
Chandan Guria
Keyword(s):  
Surface Tension ◽  
Methyl Ester ◽  
Rheological Behavior

Surface Tension and Viscosity of Herbal Massage Oil

2012 ◽  
Vol 506 ◽  
pp. 343-346
Author(s):  
Sumuntana Anuchatkidjaroen ◽  
T. Phaechamud
Keyword(s):  
Heat Treatment ◽  
Surface Tension ◽  
Traditional Medicine ◽  
Methyl Salicylate ◽  
Coconut Oil ◽  
Suitable Method ◽  
Virgin Coconut Oil ◽  
Characteristic Viscosity ◽  
Good Characteristic ◽  
Unpleasant Odor

Herbal oils have been used for centuries as a traditional medicine. In this study, herbal massage oil was prepared by using crocodile oil (CO) or virgin coconut oil (VCO) as carrier oil. This experiment was conducted to find out the suitable method for preparation of herbal massage oils from CO or VCO. The satisfactory appearance and viscosity of herbal massage oil was received when using 44.9% by weight of crocodile oil as carrier oil. Searching appropriate for herbal massage oil, that exhibited the good characteristic, viscosity, fragrance and hot, was done with various systems. The carrier oils heated with Zingiber montanum (Plai, ZM) (22.45 % w/w) and Curcuma sp. (Wan ma leung, CS) (22.45 % w/w) and then the mixture was mixed with butylated hydroxyl toluene (BHT), menthol, methyl salicylate and camphor were likely to be the appropriate method. The surface tension of the mixture between different herbal oils and carrier oil in the ratio of 1:1 was no significantly difference. The highest viscosity was obtained from the mixture of carrier oil and Curcuma aromatic (Wan nang kum, CA). Oil extracted from herbal with heat treatment could mask the unpleasant odor of CO and VCO but not significantly affected the surface tension and viscosity of carrier oils.

Influence of nucleating agent type on the morphology of extruded polyetherimide foam for printed circuit boards*

2019 ◽  
Vol 56 (3) ◽  
pp. 317-341 ◽  
Author(s):  
Clemens Keilholz ◽  
Daniel Raps ◽  
Thomas Köppl ◽  
Volker Altstädt
Keyword(s):  
Surface Tension ◽  
Printed Circuit Boards ◽  
Particle Diameter ◽  
Nucleating Agent ◽  
Nucleating Agents ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Foam Morphology ◽  
The Mean ◽  
Mean Particle Diameter

This work focuses on the development of foamed high temperature thermoplastic substrates for printed circuit boards. For this application it is necessary to achieve mean cell diameters smaller than 30 µm in order to be able to realize vias and high packaging densities (miniaturization). Different additives as nucleating agents, namely macro- and micro-crystalline talc, silica, calcium carbonate, and wollastonite, were melt-compounded with polyetherimide using a twin-screw extruder. Foamed samples are prepared by foam extrusion using a slit die and CO2 as physical blowing agent. The aim of this study is to analyze the influence of the mean particle size and the particle surface tension on the mean cell diameters. Therefore, the shape of the additives, the foam morphology, and the elongational viscosity were considered. The additives with a suitable particle size and surface tension exhibit a positive influence on the foam morphology, resulting in smaller cell diameters (<30 µm), a narrower cell size distribution and a foam density lower than 900 kg/m3. If the mean particle diameter of the nucleating agents is lower than 0.6 µm in this study, no nucleation effect could be observed. This is related to the fact that no heterogeneous nucleation occurs, if the particle diameter is too small. If the mean particle diameter of the used additives is larger than 1.5 µm, which could be demonstrated in this study in case of polyetherimide, then the additive acts as nucleating agent and heterogeneous nucleation occurs. Furthermore, it was observed that the mean cell diameter was affected by the different surface tensions of the studied nucleating agents.

scholarly journals Copolymer Based on Polyglycerol-Acrylate-Lactate as Potential Water Viscosifier and Surfactant for Enhanced Oil Recovery

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
M. P. Amaya-Gómez ◽  
L. M. Sanabria-Rivas ◽  
A. M. Díaz-Lasprilla ◽  
C. Ardila-Suárez ◽  
R. H. Castro-García ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Chemical Structure ◽  
Low Cost ◽  
Surfactant Flooding ◽  
Scanning Calorimetry ◽  
Water Viscosity ◽  
Ft Ir ◽  
Surface Performance ◽  
Polymeric Solutions

Polymer and surfactant flooding are widely applied processes in enhanced oil recovery (EOR) in which viscous polymers or surfactants aqueous solutions are introduced in oil reservoirs to rise the recovery of the remaining oil. In this regard, one of the challenges of EOR practices is the use of efficient but low-cost viscosifier and surfactant polymers. This work is aimed at synthesizing a polyglycerol derived from the biodegradable and nontoxic monomer, glycerol, and evaluating the effect of its copolymerization on rheological and interfacial properties, which were tested in water and brine for the former and in the water/oil system for the last properties. The copolymers were synthesized using a polyglycerol backbone, acrylic acid, lactic acid, and oleic acid. The chemical structure of copolymers was characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetry (TG), and differential scanning calorimetry (DSC). The viscosity and the interfacial tension (IFT) of polymeric solutions were tested. Thus, the viscosity and surface performance of the prepared polymer solutions in distilled water and brine were analyzed according to the structure of the synthesized polymers. The results showed that the synthesized polymers modified water viscosity and surface tension between water and oil. The developed polymers could be candidates for applications in enhanced oil recovery and related applications.

Stimulation of an indigenous thermophillic anaerobic bacterial consortium for enhanced oil recovery

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88115-88124 ◽  
Author(s):  
Rohit Rathi ◽  
Meeta Lavania ◽  
Manoj Sawale ◽  
Vipin Kukreti ◽  
Subir Kumar ◽  
...  
Keyword(s):  
Surface Tension ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Bacterial Consortium ◽  
Core Flood ◽  
Methanogenic Consortium ◽  
Stimulation Of

Production of gases, VFAs, solvents and surfactants was achieved by thermophilic methanogenic consortium TERIL63, showing reduction in surface tension from 69 to 35 dynes cm−1. TERIL63 with an optimized nutrient recipe showed 15.49% EOR at 70 °C in a core flood study.

Sign in / Sign up

Export Citation Format

Share Document