The ultra-low interfacial tension behavior of the combined cationic/anionic-nonionic gemini surfactants system for chemical flooding

Feng, Haishun; Hou, Jirui; Ma, Tao; Meng, Ziyu; Wu, Hairong; Yang, Hongbin; Kang, Wanli

doi:10.1016/j.colsurfa.2018.06.028

Cited by 60 publications

(18 citation statements)

References 24 publications

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“…The observation justified by the ability of surfactants to adsorb on both crude and water interface (Ali 2011). Besides the surfactant ability to reduce the IFT, the salinity played a role in the reduction of IFT (Al-Sahhaf et al 2007;Feng et al 2018;Puerto et al 2012). The presence of salts assists in altering the distribution of the surfactant molecules between the oil and water.…”

Section: Ift Measurement Resultsmentioning

confidence: 99%

Modelling of continuous surfactant flooding application for marginal oilfields: a case study of Bentiu reservoir

Abbas

Elhag

Sulaiman

et al. 2021

J Petrol Explor Prod Technol

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Enhanced oil recovery (EOR) is a proven method to increase oil production from the brown fields. One of the efficient EOR methods is injecting surfactants to release the trapped oil. However, few unconsolidated behaviours were observed in both field and laboratory practice. In this study, a new framework was adapted to evaluate the continuous surfactant flooding (CSF) in Bentiu reservoir. The study aims to quantify the expected range of the oil production, recovery factor and residual oil saturation (Sor). The motivation came from the oil demand in Sudan and the insufficient cores. The framework adopted in the study includes numerical simulation modelling and proxy modelling. Thirty-six cores obtained from the field were revised and grouped into five main groups. The interfacial tension (IFT) data were obtained experimentally. The CSF sensitivity study was developed by combining different experimental design sets to generate the proxy model. The CSF numerical simulation results showed around 30% additional oil recovery compared to waterflooding and approximately oil production between (20–30) cm3. The generated proxy model extrapolated the results with concerning lower ranges of the input and showed an average P50 of oil production and recovery of 74% and 17 cm3, respectively. Overall, the performance of CSF remained beneficial in vast range of input. Moreover, the generated proxy model gave an insight on the complexity of the interrelationship between the input factors and the observants with a qualitative prospective factors. Yet, the results confirmed the applicability of CSF in core scale with an insight for field scale application.

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Section: Ift Measurement Resultsmentioning

confidence: 99%

Modelling of continuous surfactant flooding application for marginal oilfields: a case study of Bentiu reservoir

Abbas

Elhag

Sulaiman

et al. 2021

J Petrol Explor Prod Technol

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“…The prepared different surfactant solutions, with a concentration range of 80-5000 mg/L, were poured into a clean 30 mL teflon cup with 28 mm mean diameter [2]; the ring was initially washed with pure water and acetone between the measurements of values [3]. All measurements were repeated at least thrice until the values were reproducible [2,4]. The platinum ring method using SITE 100 surface tension instrument was used to determine the surface tension.…”

Section: Surface Tensionmentioning

confidence: 99%

“…Foam stability was determined by the ratio of the foam height at 0 min and 3 min [6]. All measurements were repeated at least thrice until the values were reproducible [4]. 100 mL of 3000 mg/L surfactant solutions was prepared and blended at 7000 rpm for 180 s by means of the Waring Blender.…”

Section: Surface Tensionmentioning

confidence: 99%

“…Therefore, injecting foam into the formation improves reservoir heterogeneity. Foam liquid enters the high permeability layer first and traps gas, resulting in a temporary plugging effect in the high permeability layer, and the whole process needs no artificial control [4,5]. That is to say, the bubbles will automatically adjust the injection curve, or intelligently.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Interface Activity of a Series of Carboxylic Quaternary Ammonium Surfactants in Hydraulic Fracturing

et al. 2019

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Hydraulic fracturing is an important technology for the development of unconventional resources, while the foam fracturing plays an essential role for the oil recovery in hydraulic fracturing. To further explore the anion effect of quaternary ammonium cationic surfactants on their relative performances, four fatty acid surfactants were prepared (cetyltrimethylammonium acetate (CTAAC), cetyltrimethylammonium butyrate (CTABU), cetyltrimethylammonium hexanoate (CTAHE), and cetyltrimethylammonium caprylate (CTACA)). The effect of anions on surface tension and foaming properties were discussed, and the emulsion stability was also investigated. The experimental results were presented that the CTAAC possesses the highest surface activities compared with other members in the prepared surfactants. The critical micelle concentration (CMC) and surface tension at the CMC (γCMC) increase as increasing methylene segments in the anions, the maximum surface excess concentration (Γmax), and minimum area per molecule (Amin) present an opposite trend with the increase of methylene segments. The CTAAC exhibits the best performances on foamability and foam stability than other synthesized surfactants at 70°C; the initial foam height (H0) and the foam height ratio (R3) at 0 min and 3 min are 34.9 cm and 52.9%, respectively; this is due to the lowest surface tension and shortest methylene segments. In addition, the emulsion stability was shown to follow the order of CTAAC>CTABU>CTAHE>CTACA.

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“…After long‐term primary and secondary oil recovery, most oil reservoirs have entered the high‐water‐bearing stage, and the remaining oil is trapped in the pores of the reservoir sandstone as discontinuous oil blocks. For such reservoirs, enhanced oil recovery (EOR) is an effective means to further increase oil recovery (Alvarado and Manrique, ; Kumar et al, ), where surfactant flooding has drawn much attention and has been considered the one of the most promising ways of EOR (Bhuia et al, ; Feng et al, ; Kumar and Mandal, ; Pal et al, ; Saxena et al, ). The currently developed surfactants for EOR are mainly of anionic surfactants, among which anionic Gemini surfactant (AGS) has been considered the most promising surfactant because of its excellent surface activities, such as low critical micelle concentration (CMC), low adsorption on surface of reservoir rock, wetting and emulsifying ability for the crude oil, and excellent synergistic effect with other surfactants (Din et al, ; Gao and Sharma, ; Jiang et al, ; Lv et al, ; Salehi et al, ).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of an Anionic Gemini Surfactant for Enhanced Oil Recovery in a Hypersaline Reservoir

Chen

Liu

et al. 2019

J Surfact & Detergents

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A new type of anionic Gemini surfactant (AGS) was designed and prepared by a simple, low–cost, and green method, and its properties were characterized. The results showed that the values of parameters such as critical micelle concentration (CMC) value, Γmax, Amin, and pC20 of AGS were 0.10 mmol L−1, 1.62 mmol m−2, 1.02 nm2, and 4.60, respectively, indicating that AGS is highly surface active. AGS has a very good synergistic effect with lauryl diethanol amide (6501), and the mixture surfactant 6501DA (composed of AGS and 6501 with a mass ratio of 1:2.5) has good wetting and emulsifying ability of the crude oil and good resistance to calcium and magnesium ions. In the temperature range from 50 to 70 °C, salinity of 20,000–50,000 mg L−1 of the simulated formation water, and dosage of 6501DA from 500 to 3000 mg L−1, all the interfacial tension (IFT) values between the 6501DA solution and Bamianhe crude oil were lower than 10−2 mN m−1, and all the adsorption amounts of oil sand to 6501DA in solution were less than 2 mg g−1, indicating that AGS has potential for application in EOR in a hypersaline reservoir.

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The ultra-low interfacial tension behavior of the combined cationic/anionic-nonionic gemini surfactants system for chemical flooding

Cited by 60 publications

References 24 publications

Modelling of continuous surfactant flooding application for marginal oilfields: a case study of Bentiu reservoir

Modelling of continuous surfactant flooding application for marginal oilfields: a case study of Bentiu reservoir

Synthesis and Interface Activity of a Series of Carboxylic Quaternary Ammonium Surfactants in Hydraulic Fracturing

Preparation and Characterization of an Anionic Gemini Surfactant for Enhanced Oil Recovery in a Hypersaline Reservoir

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