scholarly journals Micellar Aggregation Behavior of Alkylaryl Sulfonate Surfactants for Enhanced Oil Recovery

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4325 ◽  
Author(s):  
Huoxin Luan ◽  
Lingyan Gong ◽  
Xinjian Yue ◽  
Xiaobin Nie ◽  
Quansheng Chen ◽  
...  
Keyword(s):  
Surface Tension ◽  
Aqueous Solutions ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Aggregation Number ◽  
Critical Micellar Concentration ◽  
Aggregation Behavior ◽  
Alkylaryl Sulfonate ◽  
Measuring Surface ◽  
Micellar Aggregation Number

Alkylaryl sulfonate is a typical family of surfactants used for chemically enhanced oil recovery (EOR). While it has been widely used in surfactant–polymer flooding at Karamay Oilfield (40 °C, salinity 14,000 mg/L), its aggregation behavior in aqueous solutions and the contribution of aggregation to EOR have not been investigated so far. In this study, raw naphthenic arylsulfonate (NAS) and its purified derivatives, alkylaryl monosulfonate (AMS) and alkylaryl disulfonate (ADS), were examined under simulated temperature and salinity environment of Karamay reservoirs for their micellar aggregation behavior through measuring surface tension, micellar size, and micellar aggregation number. It was found that all three alkylaryl sulfonate surfactants could significantly lower the surface tension of their aqueous solutions. Also, it has been noted that an elevation both in temperature and salinity reduced the surface tension and critical micellar concentration. The results promote understanding of the performance of NAS and screening surfactants in EOR.

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.

A novel sophorolipid-producing Candida keroseneae GBME-IAUF-2 as a potential agent in microbial enhanced oil recovery (MEOR)

2020 ◽  
Vol 367 (17) ◽  
Author(s):  
Zahra Ganji ◽  
Keivan Beheshti-Maal ◽  
Ahmadreza Massah ◽  
Zarrindokht Emami-Karvani
Keyword(s):  
Surface Tension ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Microbial Enhanced Oil Recovery ◽  
Original Activity ◽  
5.8S Rdna ◽  
Food Industries ◽  
Emulsification Index ◽  
Isolation And Characterization ◽  
Displacement Assay

ABSTRACT The biosurfactants have extensive applications in food and petroleum microbiology. The aims of this research were isolation and characterization of thermo-tolerant biosurfactants from highly producing yeast strains. The Bushnell Hass medium was used for screening the biosurfactant-producing yeasts. Biosurfactant presence was evaluated using oil displacement assay and surface tension test. The best biosurfactant-producing strain was named Candida keroseneae GBME-IAUF-2 and its 5.8s-rDNA sequence was deposited in GenBank, NCBI, under the accession number MT012957.1. The thin layer chromatography and Fourier-transform infrared spectroscopy analysis confirmed that the extracted biosurfactant was sophorolipid with a significant surface activity. The purified sophorolipid decreased the surface tension of water from 72 to 29.1 mN/m. Its maximum emulsification index, E24%, was recorded as 60% and preserved 92.06–97.25% of its original activity at 110–120°C. It also preserved 89.11% and 84.73% of its original activity in pH of 9.3 and 10.5, respectively. It preserved 96.66–100% of its original activity in saline extreme conditions. This is the first report of sophorolipid production by the yeast C. keroseneae. According to the high thermal, pH and saline stability, the sophorolipid produced by C. keroseneae GBME-IAUF-2 could be highly recommended for applications in microbial enhanced oil recovery as well as food industries as an excellent emulsifying agent.

scholarly journals Experimental Investigation of Surfactant Partitioning in Pre-CMC and Post-CMC Regimes for Enhanced Oil Recovery Application

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2319 ◽  
Author(s):  
Ahmed Fatih Belhaj ◽  
Khaled Abdalla Elraies ◽  
Mohamad Sahban Alnarabiji ◽  
Juhairi Aris B M Shuhli ◽  
Syed Mohammad Mahmood ◽  
...  
Keyword(s):  
Surface Tension ◽  
High Temperature ◽  
Interfacial Tension ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
High Performance ◽  
Surfactant Concentration ◽  
Effect Of Temperature ◽  
Sweep Efficiency ◽  
Partitioning Coefficient

The applications of surfactants in Enhanced Oil Recovery (EOR) have received more attention in the past decade due to their ability to enhance microscopic sweep efficiency by reducing oil-water interfacial tension in order to mobilize trapped oil. Surfactants can partition in both water and oil systems depending on their solubility in both phases. The partitioning coefficient (Kp) is a key parameter when it comes to describing the ratio between the concentration of the surfactant in the oil phase and the water phase at equilibrium. In this paper, surfactant partitioning of the nonionic surfactant Alkylpolyglucoside (APG) was investigated in pre-critical micelle concentration (CMC) and post-cmc regimes at 80 °C to 106 °C. The Kp was then obtained by measuring the surfactant concentration after equilibration with oil in pre-cmc and post-cmc regimes, which was done using surface tension measurements and high-performance liquid chromatography (HPLC), respectively. Surface tension (ST) and interfacial tension (IFT) behaviors were investigated by performing pendant and spinning drop tests, respectively—both tests were conducted at high temperatures. From this study, it was found that APG was able to lower IFT as well as ST between water/oil and air/oil, and its effect was found to be more profound at high temperature. The partitioning test results for APG in pre-cmc and post-cmc regimes were found to be dependent on the surfactant concentration and temperature. The partitioning coefficient is directly proportional to IFT, where at high partitioning intensity, IFT was found to be very low and vice versa at low partitioning intensity. The effect of temperature on the partitioning in pre-cmc and post-cmc regimes had the same impact, where at a high temperature, additional partitioned surfactant molecules arise at the water-oil interface as the association of molecules becomes easier.

Measurements of Surface Tension for Mineral and Crude Oil Systems

2019 ◽  
Vol 391 ◽  
pp. 106-113 ◽  
Author(s):  
B. Busahmin ◽  
B.B. Maini
Keyword(s):  
Surface Tension ◽  
Crude Oil ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Mineral Oil ◽  
Reservoir Engineering ◽  
Significant Feature ◽  
Thin Membrane ◽  
Foamy Oil ◽  
Part Surface

For the most part, Surface tension is relying upon the force adjusted on a drop that is pending or hanging and inevitably is disengaged. Surfaces of fluids normally covered with what goes about as a tiny film. In spite of the fact that this evident film has little quality, it nevertheless acts like a thin membrane and resists being broken. This accepted to be the reason for the attractive forces between the atoms inside a given framework. All atoms are pulled in one to the next in extent to the result of their masses and conversely as the squares of the separation between them. Surface tension for both mineral and oil crude systems is investigated and the value was recorded. In addition, this value for mineral oil system showed higher value than foamy crude oil system, whereas foamy oil saturated methane crude oil system showed lower value than foamy oil saturated methane mineral oil. Surface tension in its general form is believed to have a significant feature in reservoir engineering calculations as well as in further studies related to improved oil production and in designing enhanced oil recovery plans. Moreover, CH4, C2H6 and CO2 oil systems investigated for the initial production, drawdown experiments. After the investigation, the behaviour is identical for almost one-day and two-days.

scholarly journals APLIKASI BIOSURFAKTAN Bacillus subtilis ATCC 19659 DENGAN MEDIA PRODUKSI LIMBAH TAHU UNTUK ENHACED OIL RECOVERY

2021 ◽  
Vol 9 (2) ◽  
pp. 101
Author(s):  
Rizqy Fachria
Keyword(s):  
Surface Tension ◽  
Bacillus Subtilis ◽  
Crude Oil ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Liquid Waste ◽  
Nutrient Broth ◽  
Microbial Enhanced Oil Recovery ◽  
Subtilis Atcc ◽  
Bacillus Subtilis Atcc

Biosurfactant as secondary metabolit produced by Bacillus subtilis. It has the ability to emulsify and reduce the surface tension. Biosurfactants produced by B. subtilis is a lipopeptide. Furthermore, biosurfactant can be utilized in microbial enhanced oil recovery (MEOR). In this research, biosurfactant of B. subtilis ATCC 19 659 were evaluated. The production use Nutrient Broth (NB) and soybean liquid waste. Application of biosurfactant in oil recovery showed that biosurfactant of NB recover 2 mL crude oil and biosurfactant of soybean liquid waste medium recover 3.67 mL.

Aggregation Behavior in Aqueous Solutions of a New Class of Asymmetric Bipolar Amphiphiles Investigated by Surface Tension Measurements

2001 ◽  
Vol 239 (2) ◽  
pp. 517-521 ◽  
Author(s):  
M.-F. Gouzy ◽  
B. Guidetti ◽  
C. André-Barres ◽  
I. Rico-Lattes ◽  
A. Lattes ◽  
...  
Keyword(s):  
Surface Tension ◽  
Aqueous Solutions ◽  
Aggregation Behavior ◽  
New Class

scholarly journals Analysis of the interaction between polymer and surfactant in aqueous solutions for chemical-enhanced oil recovery

2017 ◽  
Vol 36 (7) ◽  
pp. 887-890 ◽  
Author(s):  
Réka Kothencz ◽  
Roland Nagy ◽  
László Bartha ◽  
Judit Tóth ◽  
Árpád Vágó
Keyword(s):  
Aqueous Solutions ◽  
Enhanced Oil Recovery ◽  
Oil Recovery
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