«Oilfield engineering»

Control of oil stability during the introduction of dispersing additives by using the method of near-infrared spectroscopy

UDC: 66.022.389:665.6.033.28
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: stability, petroleum dispersed systems, dispersing additives, asphaltenes, Near-Infrared Spectroscopy

Annotation:

The authors of the article present the results of studying the effectiveness of SSK-400 and S-1500 dispersing additives for the stabilization of asphaltenes in oil systems by using Near-Infrared Spectroscopy. The additives, traditionally used in motor oils to prevent deposits, were tested on model mixtures of petroleum oils and real oil samples using the standard ASTM D7061-23 method to assess the stability of colloidal asphaltene-containing systems. The results proved the fact that both dispersant-type additives significantly reduce the stability index (SI) of oils to the values corresponding to high stability of asphaltene dispersions (< 5), regardless of their initial stability. The most effective additive was the sulfonate additive SSK-400, which reduced the stability index by 1–2 orders of magnitude compared to the succinimide additive С-1500. The results obtained clearly confirm the possibility of using the studied domestic additives to increase the stability of oil in technological processes of its production and refinement at various raw materials.

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