An experimental study on alkaline/surfactant/polymer flooding systems using nature mixed carboxylate

Screening of amphoteric and anionic surfactants for cEOR applications using a novel approach

“…Further addition of the surfactant increased the IFT and maximum IFT was observed at 0.1 wt% surfactant concentration. This type of behavior was reported previously for other surfactant systems [9,[34][35][36]. This behavior is related to adsorption and desorption of surfactant at the oil/water interface.…”

Enhanced Oil Recovery Techniques for Indian Reservoirs

“…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).…”

The Application of a New Polymeric Surfactant for Chemical EOR

“…To reduce the cost of surfactant production, much attention is focused toward agriculturally derived oleochemicals as alternative feedstocks (Gregorio, 2005). Many surfactants have been produced from natural oils to satisfy EOR requirements (Wuest et al, 1994;Li et al, 2000). Soybean and coconut oils are the most popular raw materials used to derive oleochemical feedstocks such as fatty alcohol and esters (Hill, 2000).…”