Authors
Abdelhalim IA Mohamed, Abdullah S Sultan, Ibnelwaleed A Hussein, Ghaithan A Al-Muntasheri
Publication date
2017
Journal
Journal of Chemistry
Volume
2017
Issue
1
Pages
5471376
Publisher
Hindawi
Description
Emulsified water‐in‐oil (W/O) systems are extensively used in the oil industry for water control and acid stimulation. Emulsifiers are commonly utilized to emulsify a water‐soluble material to form W/O emulsion. The selection of a particular surfactant for such jobs is critical and certainly expensive. In this work, the impact of surfactant structure on the stability of W/O emulsions is investigated using the hydrophilic‐lipophilic balance (HLB) of the surfactant. Different commercial surfactants were evaluated for use as emulsifiers for W/O systems at high‐temperature (up to 120°C) high‐salinity (221,673 ppm) HTHS conditions. Diverse surfactants were examined including ethoxylates, polyethylene glycols, fluorinated surfactants, and amides. Both commercial Diesel and waste oil are used for the oleic phase to prepare the emulsified system. Waste oil has shown higher stability (less separation) in comparison with Diesel …
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