Combined effects of polymer/surfactant/oil/alkali on physical chemical properties

Nedjhioui, Mohamed; Moulai‐Mostefa, Nadji; Morsli, A.; Bensmaılı, A.

doi:10.1016/j.desal.2005.05.013

Cited by 94 publications

(54 citation statements)

References 21 publications

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“…The surfactant also reduces the IFT to ultralow (10 −3 mN/m) in order to improve the mobility of residual oil. Polymer increased the water phase apparent viscosity to reduce the mobility ratio of oil and water, finally expanding the sweep volume [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer

Yin

Zhao

Gao

et al. 2017

International Journal of Polymer Science

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Na 2 CO 3 was used together with surfactant and polymer to form the Alkaline/Surfactant/Polymer (ASP) flooding system. Interfacial tension (IFT) and emulsification of Dagang oil and chemical solutions were studied in the paper. The experiment results show that the ASP system can form super-low interfacial tension with crude oil and emulsified phase. The stability of the emulsion is enhanced by the Na 2 CO 3 , surfactant, and the soap generated at oil/water contact. Six core flooding experiments are conducted in order to investigate the influence of Na 2 CO 3 concentration on oil recovery. The results show the maximum oil recovery can be obtained with 0.3 wt% surfactant, 0.6 wt% Na 2 CO 3 , and 2000 mg/L polymer. In a heterogeneous reservoir, the ASP flooding could not enhance the oil recovery by reducing IFT until it reaches the critical viscosity, which indicates expanding the sweep volume is the premise for reducing IFT to enhance oil recovery. Reducing or removing the alkali from ASP system to achieve high viscosity will reduce oil recovery because of the declination of oil displacement efficiency. Weak base ASP alkali can ensure that the whole system with sufficient viscosity can start the medium and low permeability layers and enhance oil recovery even if the IFT only reaches 10 −2 mN/m.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer

Yin

Zhao

Gao

et al. 2017

International Journal of Polymer Science

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“…Conversely, the consumption of surfactant increased [22]. However, the b-CD cavity effectively protected the surfactant against the adsorption of strata, according to the theory of inclusion function of the b-CD cavity to surfactant [17].…”

Section: Interfacial Tension and Adsorptionmentioning

confidence: 90%

Preparation and Performance of a Novel Water‐Soluble Cationic Polymer Containing β‐Cyclodextrin

et al. 2011

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Allyl-b-cyclodextrin is utilized to react with dimethyl diallyl ammonium chloride and acrylamide to synthesize a novel water-soluble cationic polymer by redox free-radical polymerization. The optimum polymerization conditions are determined by the single-variable method, while the structure is characterized by Fourier transform infrared and scanning electron microscopy. In rheological experiments the polymer demonstrates superior properties compared to polyacrylamide. Interfacial tension and adsorption experiments prove the excellent performance of the polymer which can effectively decrease the interfacial tension and reduce the surfactant loss caused by stratum absorption in the process of polymer/surfactant flooding, thus indicating the potential application of the polymer for enhancing oil recovery.

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“…The surfactant reduces the IFT between oil and water by getting adsorbed at the interface between the crude oil and water and makes spherical oil droplets to deform and elongate to overcome the capillary forces persuading a huge raise in the capillary number (Mokhatab and Towler 2009;Wu et al 2012;Al-dousari and Garrouch 2013). These surfactants also helps to reverse the rock wettability by changing the oil-wet rock to water-wet, emulsify the oil and help the oil to come out of the rock and mobilize the entrapped oil in porous rock (Taylor and Nasr-El-din 1996;Li et al 2000;Nedjhioui et al 2005;Mandal and Ohja 2008). Explicitly, surfactants of specific structure and high purity are required (Yang et al 2005).…”

Section: Chemical Eormentioning

confidence: 96%

Enhanced Oil Recovery Techniques for Indian Reservoirs

2015

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The overall oil production worldwide has declined due to the increase in maturity of the oil reservoirs. In developing countries like India, the oil production and demand plays a crucial role for the development of economy of the country. However, the domestic crude oil production is insufficient to meet the requirement for energy. Thus, there is a big challenge to minimize the gap between the demand and supply for crude oil. Several methods to enhance oil recovery have been developed to increase the production from matured reservoirs and are referred to as enhanced oil recovery (EOR) methods. This chapter discusses in detail about the various EOR methods, their applicability, and the screening criteria for various reservoir types. The EOR methods are further discussed in Indian contexts. This chapter also summarizes the details of various oilfields in India. The chapter will in general, help to understand the recent trends and the need of EOR for Indian oil reservoirs.

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Combined effects of polymer/surfactant/oil/alkali on physical chemical properties

Cited by 94 publications

References 21 publications

Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer

Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer

Preparation and Performance of a Novel Water‐Soluble Cationic Polymer Containing β‐Cyclodextrin

Enhanced Oil Recovery Techniques for Indian Reservoirs

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