What is asphaltene dispersant?

Asphaltene dispersants (ADs) are a class of chemical additives which can be used to control asphaltene deposition (Oschmann 2002). They have been successfully applied to inhibiting and removing asphaltene deposits as a formation squeeze, batch, or continuous injection (Manek 1995).

How do you prevent asphaltene deposition?

1. Manipulation of oil production parameters. One method to prevent or reduce asphaltene deposition in the wells is to control pressure, temperature and/or flow rate to avoid the conditions where asphaltenes precipitate.

What is colloidal instability index?

The colloidal instability index (CII) is another screening criterion, suggested by Yen et al. [32] that can be used to identify crude oil systems with deposit problems. The colloidal instability index is expressed as the ratio of the sum of asphaltenes and saturates to the sum of aromatics and resins.

What is asphaltenes in fuel?

Asphaltenes are formed when diesel fuel is heated under high pressure as it passes through today’s high pressure fuel injection systems. These asphaltenes turn the fuel a dark brown color and can congregate and clog your fuel filters.

How to calculate the stability of a turbiscan?

Deciding on the stability based simply on the raw data requires kinetic calculations based on different types of variations ( migration, size…). The TSI calculation can provide the overall stability kinetic in a single click and display this information as a function of time in a very simple graph.

When does the turbiscan show no visual destabilization?

In the A ranking, no visual destabilizations are observed at this stage. The variations detected by the Turbiscan ® are higher than the “early” stage and correspond to the beginning of the destabilization, however, the destabilizations remain non-visual in most cases (>90%).

How does crude oil aging affect asphaltene inhibitor?

In order to understand the effect of aging of crude oils on asphaltene inhibitor product recommendation, simulated aging studies were performed on a crude oil from Wyoming with known asphaltene issues.

What does the TSI stand for in turbiscan?

The T urbiscan S tability I ndex ( TSI) is a Turbiscan® specific parameter developed for formulators to compare and characterize the physical stability of various formulations with the ease of a single click.