Facile fabrication of antiwax conversion coatings based on water film theory

• Phytic acid conversion coating was first applied in wax prevention area.
• The surface morphology, composition and wetting behaviors were studied.
• The conversion coatings present excellent antiwax performance in wax deposition test.
• The antiwax mechanism based on water film theory was proposed.

Wax deposition is a detrimental problem that happens during the crude oil production and transportation. To inhibit wax deposition, a conversion coating with excellent antiwax property is developed using a quite simple and environmentally friendly method. The surface morphology, composition and wetting behaviors were characterized by SEM, EDS, FTIR and contact angle meter. A possible mechanism of antiwax is proposed, which can be calculated from water film theory. Due to the simple fabrication and excellent performance, this conversion coating is expected to widely apply in petroleum industry.

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