Alkyl Polyglycoside-Sorbitan Ester Formulations for Improved Oil Recovery

Abstract

We measured interfacial tensions (IFT) of aqueous alkyl polyglucoside (APG) systems formulated with sorbitan ester-type cosurfactants against n-octane. The study focused on low to ultralow IFT systems which are relevant for enhanced oil recovery (EOR). In addition, we measured equilibrium adsorption concentrations of these surfactants and cosurfactants onto kaolinite clay, commonly found in oil reservoirs. We present one surfactant EOR laboratory flood experiment with one selected APGsorbitan ester formulation with which we recovered 94 % of initial oil in place (IOIP).Formulierungen mit Alkylpolyglucosiden und Sorbitanestern für die tertiäre Erdölförderung. Wir präsentieren hier Messergebnisse für Grenzflächenspannungen zwischen n-Oktan und wässrigen Alkylpolyglycosidsystemen (APG), die mit Sorbitanester/Co-Tensiden formuliert wurden. Diese Studie konzentriert sich auf niedrige bis ultraniedrige Grenzflächenspannungen, die für die tertiäre Ölförderung (EOR) relevant sind. Zusätzlich haben wir die Adsorptionsgleichgewichtskonzentrationen für diese Tenside und Co-Tenside an Kaolinit gemessen. Kaolinit ist eine Tonerde, die in Ölreservoirs häufig auftritt. Wir präsentieren außerdem ein Tensid-EOR Flutungsexperiment mit einer ausgewählten APG-Formulierung. Mit ihr konnten wir 94 % des Öls fördern.

Nano based lutein extraction from marigold petals: optimization using different surfactants and co-surfactants

“…In addition, the high lutein extraction efficiency of synthetic surfactants compared to their natural counterparts at SOR max (Tables 1 and 2) may also be connected with their CMCs. For instance, a relationship can be seen between the high efficiency of T80 (39.41%) and S20 (35.67%) with their low CMCs (0.017 and 0.024 mM L −1 ) consequently high C max 2/CMC ratios (710.82 and 953.16), respectively [30, 31]. It is reported that at high concentrations, slightly higher than CMC, the micelles usually aggregate or even coalesce [32].…”

Surfactant concentration and type affects the removal ofEscherichia colifrom pig skin during a simulated hand wash

“…70°C while mixing (Wu et al . ). The solutions of sorbitan monostearate stayed dispersed for the duration of the experiment ( c .…”

“…Surfactants were added to the water, covered, then mixed for 5 min. Sorbitan monostearate was not miscible in room temperature water, and was dispersed by warming the water to c. 70°C while mixing (Wu et al 2010). The solutions of sorbitan monostearate stayed dispersed for the duration of the experiment (c. 1 h).…”

Solubility enhancement of anthracene and pyrene in the mixtures of a cleavable cationic gemini surfactant with conventional surfactants of different polarities

“…Tatsumi et al have reported the use of cationic gemini surfactants with two quaternary ammonium groups in the polar head and two hydrolysable amide groups in the lipophilic portions [17]. Hydrophilic nature of spacer contributes to the higher water solubility that helps in hydrolysis and degradation processes [17][18][19][20][21]. Cationic surfactants have been successfully employed to interact with the negatively charged surfaces or biomolecules such as prokaryotic/eukaryotic cells, antigenic proteins, lipids, etc.…”