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Cationic surfactants are primarily nitrogen-containing organic amine derivatives. Because the nitrogen atoms in their molecules contain lone pairs of electrons, they can bond with hydrogen atoms in acid molecules via hydrogen bonds, giving the amino group a positive charge. Therefore,…
The mechanism of crude oil demulsifiers is a phase transfer-reverse deformation mechanism. Upon addition of the demulsifier, a phase transition occurs, generating a surfactant of the opposite type to the emulsion formed by the emulsifier (reverse demulsifier). This type of…
Based on differences in chemical composition, mechanism of action, and application scenarios, clay stabilizers for oilfields can be divided into four main categories. Each category has its own focus in terms of performance, cost, and applicable conditions, providing diversified choices…
Gemini quaternary ammonium salt surfactants, also known as cationic Gemini surfactants, are a new type of surfactant that links two or more single-chain cationic surfactants together through linking groups. The unique double N-headed molecular structure of Gemini quaternary ammonium salt…