The study on the properties of the newly extended Gemini surfactants and their application potentials in the petroleum industry

Mpelwa, Musa; Tang, Shanfa; Jin, Lijun; Hu, Ruizhi; Wang, Changquan; Hu, Yang

doi:10.1016/j.petrol.2019.106799

Cited by 24 publications

(9 citation statements)

References 45 publications

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“…According to experimental studies, the viscoelastic Gemini surfactant is promising in formulating fluid systems with ultra-low interfacial tension and can be used as CEOR oil displacement agents. On this basis, we (Mpelwa et al, 2020) have studied new viscoelastic Gemini surfactants with intermediate polarity groups and variant spacer groups. The ability of viscoelastic Gemini surfactant EGS to self-assemble into entangled micelles in solution improves the viscosity-increasing effect and temperature resistance.…”

Section: Current Problems and Solutions Of Viscoelastic Surfactant Floodingmentioning

confidence: 99%

Research progress of viscoelastic surfactants for enhanced oil recovery

Tang

Mpelwa

et al. 2021

Energy Exploration & Exploitation

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Although new energy has been widely used in our lives, oil is still one of the main energy sources in the world. After the application of traditional oil recovery methods, there are still a large number of oil layers that have not been exploited, and there is still a need to further increase oil recovery to meet the urgent need for oil in the world economic development. Chemically enhanced oil recovery (CEOR) is considered to be a kind of effective enhanced oil recovery technology, which has achieved good results in the field, but these technologies cannot simultaneously effectively improve oil sweep efficiency, oil washing efficiency, good injectability, and reservoir environment adaptability. Viscoelastic surfactants (VES) have unique micelle structure and aggregation behavior, high efficiency in reducing the interfacial tension of oil and water, and the most important and unique viscoelasticity, etc., which has attracted the attention of academics and field experts and introduced into the technical research of enhanced oil recovery. In this paper, the mechanism and research status of viscoelastic surfactant flooding are discussed in detail and focused, and the results of viscoelastic surfactant flooding experiments under different conditions are summarized. Finally, the problems to be solved by viscoelastic surfactant flooding are introduced, and the countermeasures to solve the problems are put forward. This overview presents extensive information about viscoelastic surfactant flooding used for EOR, and is intended to help researchers and professionals in this field understand the current situation.

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Section: Current Problems and Solutions Of Viscoelastic Surfactant Floodingmentioning

confidence: 99%

Research progress of viscoelastic surfactants for enhanced oil recovery

Tang

Mpelwa

et al. 2021

Energy Exploration & Exploitation

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“…The sample was composed of polygonal, elongated, and wormlike granules that appeared to be somewhat fissured. The SEM results indicated the possible ability of PEX to self-assemble in solution forming entangled structures that are significant for enhancing rheological properties, − which is of paramount importance in improving drilling fluid properties for successful drilling operations.…”

Section: Resultsmentioning

confidence: 99%

A Novel Amphoteric Polymer as a Rheology Enhancer and Fluid-Loss Control Agent for Water-Based Drilling Muds at Elevated Temperatures

Hamad

et al. 2020

ACS Omega

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Exploring deep and ultradeep wells has rapidly become more significant to meet the global demand for oil and gas. The study of rheological and filtration-loss properties is essential to designing drilling muds and determining their performance under operational conditions. Rheological and filtration-loss properties of drilling muds were found to have a negative impact when exposed to elevated temperatures in the wells. In this study, an amphoteric polymer (abbreviated to PEX) was synthesized and characterized using a combination of analyses: FTIR, SEM, 13 CNMR, and TGA. The synthesized PEX was used as an additive in water-based drilling muds to improve rheological properties and reduce fluid loss at elevated temperatures (180−220 °C). The experimental results demonstrated that inclusion of an optimal concentration of PEX (0.3 wt %) into the drilling mud formulation increased the rheological properties by 62.3% and decreased the filtration loss by 63.5% at an aging temperature of 180 °C. Moreover, PEX was found to perform superbly compared to polyanionic cellulose (PAC-LV) and polyacrylamide (PAM), the widely used drilling mud additives. PEX not only improved the rheological properties and reduced the filtration loss behavior but also bolstered the thermostability of the drilling mud formulation. It was concluded that the rigidity and amphoteric nature of PEX accounted for the exceptional performance and temperature resistance for PEX-drilling mud formulations. Succinctly, PEX exhibits admirable properties in smart drilling mud formulations for drilling operations under high-temperature geothermal conditions. Moreover, in terms of rheological models, the Herschel−Bulkley model adequately described the rheological properties of all the studied drilling mud formulations.

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“… 17 − 20 To name only a few, in the process of imbibition of anionic surfactant solution, the effects of capillary radius and surfactant solution properties on the position of the oil–water interface in oil wet horizontal capillary were studied. 21 Sheng used a simulation method combined with theoretical analysis and published experimental results to study the spontaneous imbibition mechanism of a surfactant in the core scale. 22 Liu and Sheng studied the effect of surfactant addition on shale self-permeability by nuclear magnetic resonance.…”

Section: Introductionmentioning

confidence: 99%

“…Spontaneous imbibition refers to the invasive process of a wetting phase displacing a non-wetting phase by means of capillary and/or gravity forces. , Studies have shown that spontaneous imbibition is an effective tool for enhanced oil recovery . Several laboratory tests and field trials have shown that surfactant-enhanced imbibition can achieve promising results after hydraulic fracturing in unconventional resource exploration. − At present, a lot of research work related to the imbibition of surfactant solutions has been carried out by related scholars. − To name only a few, in the process of imbibition of anionic surfactant solution, the effects of capillary radius and surfactant solution properties on the position of the oil–water interface in oil wet horizontal capillary were studied . Sheng used a simulation method combined with theoretical analysis and published experimental results to study the spontaneous imbibition mechanism of a surfactant in the core scale .…”

Section: Introductionmentioning

confidence: 99%

Influencing Factors of Surfactant Stripping Crude Oil and Spontaneous Imbibition Mechanism of Surfactants in a Tight Reservoir

et al. 2022

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Surfactants play a vital role in the working fluid during the exploitation of tight reservoirs. The main goal is to clarify the mechanism of surfactant production enhancement in the reservoir. In this paper, starting from the interface properties and emulsifying properties of surfactants, the factors affecting the stripping of crude oil by different surfactants were described in detail. Meanwhile, the imbibition experiments of cores were used to clarify the two spontaneous imbibition mechanisms of the surfactant. Namely, they are the capillary force expulsion caused by the emulsion stripping thermal diffusion–convection and the wettability change. When the interfacial tension between the surfactant and oil is in the range of 10 –2 –10 –3 mN/m, the particle size of emulsion is less than 1 μm, and the oil stripping efficiency is greater than 58%. The imbibition is mainly caused by thermal diffusion–convection. The wetting angle of the surfactant mainly changing wettability is less than 15°, and the adhesion work is greater than 52 mN/m. Using X-ray computed tomography, the surfactant imbibition distance of different permeability types of cores was obtained. The results show that higher permeability cores have a deeper imbibition distance. The results of this paper enrich the mechanism of enhanced oil recovery by surfactants and have important implications for the exploitation of tight reservoirs.

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The study on the properties of the newly extended Gemini surfactants and their application potentials in the petroleum industry

Cited by 24 publications

References 45 publications

Research progress of viscoelastic surfactants for enhanced oil recovery

Research progress of viscoelastic surfactants for enhanced oil recovery

A Novel Amphoteric Polymer as a Rheology Enhancer and Fluid-Loss Control Agent for Water-Based Drilling Muds at Elevated Temperatures

Influencing Factors of Surfactant Stripping Crude Oil and Spontaneous Imbibition Mechanism of Surfactants in a Tight Reservoir

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