Experimental investigation of adsorption of a new nonionic surfactant on carbonate minerals

Performance improvement of ionic surfactant flooding in carbonate rock samples by use of nanoparticles

“…It should be mentioned here that to determine the amount of adsorption loss of the addressed ionic surfactant onto the reservoir rock samples, a batch test was used. Due to this fact, the weight of the crushed rock samples and the volume of the aqueous solution with different surfactant concentrations should be consistent for all the adsorption experiments as illustrated in Ahmadi and Shadizadeh (2012, 2013a, c, 2015. Two more crucial points should be mentioned: First, the equilibrium time of adsorption was about 24 h, so adsorption experiments were conducted for 24 h. Second, the mass ratio of the surfactant solution to the crushed rock was 5:1.…”

“…To evaluate adsorption of the ionic surfactant in the presence of different silica nanoparticles, two core samples were crushed using a jaw crusher and then passed through specific sieves (50-70 mesh size) for repeatability of the experiments and to double check our adsorption experiments (Salari et al 2011;Ahmadi and Shadizadeh 2012, 2013a, b, c, 2015Ahmadi et al 2014;Zendehboudi et al 2013). X-ray diffraction (XRD) was conducted to analyze the phase composition of the core samples, and the results are shown in Fig.…”

“…As noted previously, the conductivity of the aqueous solution was utilized to indicate the surfactant concentration before and after adsorption loss onto the rock surface. For more details about the procedure of conductivity measurement for adsorption experiments, the authors referred to Ahmadi and Shadizadeh (2012, 2013a, c, 2015. Finally, the magnitude of the surfactant loss onto the rock surface (in terms of mg surfactant/g of rock) was calculated from the following formulation (Salari et al 2011;Ahmadi and Shadizadeh 2012, 2013c, 2015Zendehboudi et al 2013):…”

Review of surfactant-assisted chemical enhanced oil recovery for carbonate reservoirs: challenges and future perspectives

“…Designing and optimizing suitable surfactant flood for effective cEOR has always been very challenging and forever evolving. It is one of the robust and high-performance cEOR methods, which has been widely studied in the past decades because of its ability to alter wettability of carbonate reservoirs from the oil/mixed-wet to the waterwet surfaces, lower interfacial tension (IFT) and produce the oil entrapped in these formations (Hill et al 1973;Yang and Wadleigh 2000;Webb et al 2005;Farajzadeh et al 2010;Barnes et al 2012;Ahmadi and Shadizadeh 2013a). The idea of adding surfactants to injected water for reducing oil/water IFT and/or alter wettability thereby increasing oil recovery from reservoirs dates back to the early 1900s (Uren and Fahmy 1927).…”

Effect of Natural Leaf-derived Surfactants on Wettability Alteration and Interfacial Tension Reduction in Water-oil System: EOR Application

“…Shahri et al 6) used Amott cell to extract a natural surfactant from Zizyphus Spina-Christi and introduced the application of this surfactant in oil recovery. After that, Ahmadi and Shadizadeh 7), 8) investigated the adsorption behavior of this surfactant onto carbonate rocks at different conditions; this adsorption will cause further changes in rock wettability. Ahmadi et al 9) formulated a micro-fluid using micro-sized particles of Mulberry leaf and studied the effect of Mulberry leaf-derived surfactant on the IFT between oil and water at different surfactant concentration.…”