Surfactants employed in conventional and unconventional reservoirs for enhanced oil recovery—A review

Isaac, Oguntade Tomiwa; Pu, Hui; Oni, Babalola Aisosa; Samson, Fadairo Adesina

doi:10.1016/j.egyr.2022.01.187

Cited by 94 publications

(34 citation statements)

References 125 publications

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“…This implies that a lower concentration of injected surfactant yields lower retention density. The high retention density recorded at high surfactant concentration may have resulted from lateral interactions between the surfactant molecules, which cause the formation of aggregate at the surface of the reservoir core [ 14 , 34 , 35 ].…”

Section: Resultsmentioning

confidence: 99%

Adsorption Study of Novel Gemini Cationic Surfactant in Carbonate Reservoir Cores—Influence of Critical Parameters

et al. 2022

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Surfactant flooding is an enhanced oil recovery method that recovers residual and capillary trapped oil by improving pore-scale displacement efficiency. Low retention of injected chemicals is desired to ensure an economic and cost-effective recovery process. This paper examines the adsorption behavior of a novel gemini cationic surfactant on carbonate cores. The rock cores were characterized using an X-ray diffraction (XRD) spectroscope. In addition, the influence of critical parameters on the dynamic adsorption of the cationic gemini surfactant was studied by injecting the surfactant solution through carbonate cores in a core flooding apparatus until an equilibrium state was achieved. The concentration of surfactant was observed using high performance liquid chromatography. Experimental results showed that an increasing surfactant concentration causes higher retention of the surfactant. Moreover, increasing the flow rate to 0.2 mL/min results in lowering the surfactant retention percentage to 17%. At typical high salinity and high temperature conditions, the cationic gemini surfactant demonstrated low retention (0.42 mg/g-rock) on an Indiana limestone core. This study extends the frontier of knowledge in gemini surfactant applications for enhanced oil recovery.

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Section: Resultsmentioning

confidence: 99%

Adsorption Study of Novel Gemini Cationic Surfactant in Carbonate Reservoir Cores—Influence of Critical Parameters

et al. 2022

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“…10 However, polymers are often susceptible to degradation in the formation due to their limited temperature and salt tolerance and remain in the well, while the application of surfactants is limited by their high cost. 9 Therefore, it is of high importance to identify new chemical flooding agents with good temperature and salt resistance, low cost, and environmentfriendly character.…”

Section: ■ Introductionmentioning

confidence: 99%

“…For most oilfields in the world, at least half of the oil still remains in the reservoirs following the employment of the primary (artificial lifting) and secondary (water flooding) recovery methods . Tertiary oil recovery, also referred to as enhanced oil recovery (EOR), improves oil recovery by either increasing the macroscopic sweep efficiency or increasing the microscopic displacement efficiency. , Chemical flooding, as a successful EOR method, is mainly used to enhance recovery by injecting oil repellents, such as polymers and surfactants, into the geological formation in the wells. − For example, hydrolyzed polyacrylamide copolymers as flocculants (FLOPAAM) are used to control the mobility of injected water in EOR . However, polymers are often susceptible to degradation in the formation due to their limited temperature and salt tolerance and remain in the well, while the application of surfactants is limited by their high cost .…”

Section: Introductionmentioning

confidence: 99%

“…Tertiary oil recovery, also referred to as enhanced oil recovery (EOR), improves oil recovery by either increasing the macroscopic sweep efficiency or increasing the microscopic displacement efficiency. , Chemical flooding, as a successful EOR method, is mainly used to enhance recovery by injecting oil repellents, such as polymers and surfactants, into the geological formation in the wells. − For example, hydrolyzed polyacrylamide copolymers as flocculants (FLOPAAM) are used to control the mobility of injected water in EOR . However, polymers are often susceptible to degradation in the formation due to their limited temperature and salt tolerance and remain in the well, while the application of surfactants is limited by their high cost . Therefore, it is of high importance to identify new chemical flooding agents with good temperature and salt resistance, low cost, and environment-friendly character.…”

Section: Introductionmentioning

confidence: 99%

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Lignin Nanoparticles as Highly Efficient, Recyclable Emulsifiers for Enhanced Oil Recovery

Gao

Liu

et al. 2022

ACS Sustainable Chem. Eng.

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Emulsification is one of the important processes in chemical flooding to mobilize the residual oil in wells following secondary recovery. Oil displacement efficiency is enhanced and volumetric sweep efficiency is increased by engineering the interactions of the supporting chemicals used with the geological formations present in the wells. Polymers and surfactants are often applied to enhanced oil recovery (EOR) as emulsification displacement. However, polymers are limited by poor temperature and salt tolerance, while surfactants have a high cost. In this contribution, we report on the use of lignin nanoparticles (LNPs) as Pickering emulsifiers obtained from enzymatic hydrolysis of lignin powders to apply in EOR. The interfacial activity of LNPs prepared this way is greatly improved, which substantially promotes its emulsification ability. We show that kerosene emulsified with different concentrations of LNPs can form stable Pickering emulsions, and the emulsions can be stored for up to 6 months. In addition, due to the pH responsive character of lignin, rapid oil–water separation can be achieved by alkali demulsification. This enables the reuse of lignin suspension under pH control, which provides a new platform for the application of green and low-cost flooding, employing LNPs in EOR.

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“…Accordingly, fossil fuels such as oil and natural gas are expected to remain the fundamental energy sources in the future. Deep oil and gas, offshore oil and gas, unconventional oil and gas, low-grade oil and gas, and enhanced oil and gas recovery of developed fields are the key areas of oil and gas resource exploration and development in the future (Heidari et al, 2022;Li et al, 2020a;Isaac et al, 2022). Natural gas, as the fastestgrowing fossil fuel in the twenty-first century, will not only help us achieve a low-carbon future but will also serve as a link between today's primary fossil fuels and future renewable energy (Sahu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A state-of-the-art review and prospect of gas hydrate reservoir drilling techniques

et al. 2022

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Securing energy means grasping the key link in the national development and security strategy. Under the goals of carbon peak and carbon neutrality, the overall tendency of energy development is to increase the proportion of natural gas while stabilizing oil consumption, and the global primary energy is entering the era of natural gas. Gas hydrate in deep seabed shallow strata and extremely cold permafrost regions has piqued the interest of researchers due to its abundant resources, widespread distribution, and high energy density. Although the drilling of hydrate wells is still fraught with unknowns and challenges due to the technological barriers between countries, complex on-site working conditions, and unique physical chemical properties, accumulation forms, and occurrence characteristics of gas hydrate, more than ten successful trial productions around the world have opened the door of hope for the development of this potentially new energy. The gas hydrate reservoir drilling technique is the frontier and hotspot of scientific and technological innovation and competitiveness around the globe today, reflecting the level of oil and gas technical advancement. At the national level, it possesses strategic and revolutionary features. Innovative drilling techniques, scientific well location layout, appropriate wellbore structure and well trajectory design, efficient drilling fluid, qualified drilling and completion equipment, and successful pressure-temperature preserved coring may all provide a strong guarantee for the successful completion of gas hydrate wells. This review comprehensively reviews the drilling techniques and engineering measures that can be used to develop gas hydrate. It focuses on the research advancement of important hydrate drilling technologies and the enlightening significance of these developments in the application of hydrate drilling. This work will deliver valuable experience as well as comprehensive scientific information for gas hydrate exploration and drilling.

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Surfactants employed in conventional and unconventional reservoirs for enhanced oil recovery—A review

Cited by 94 publications

References 125 publications

Adsorption Study of Novel Gemini Cationic Surfactant in Carbonate Reservoir Cores—Influence of Critical Parameters

Adsorption Study of Novel Gemini Cationic Surfactant in Carbonate Reservoir Cores—Influence of Critical Parameters

Lignin Nanoparticles as Highly Efficient, Recyclable Emulsifiers for Enhanced Oil Recovery

A state-of-the-art review and prospect of gas hydrate reservoir drilling techniques

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