ICL Innovation, a technology incubator for the ICL group, seeks novel asphaltene inhibitors and asphaltene dispersants for the oil industry. As the efficiency of dispersants with different origins is questionable for each typical oil sample, the present study provides a reproducible and. Dodecyl resorcinol has the best performance at concentration of 50 ppm as an asphaltene dispersant and causes required n-heptane volume increment of 2%.
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Certain polymeric dispersants increase asphaltene solubilization in hydrocarbon media, and when used in conjunction with emulsion breakers, facilitate the demulsification process.
Dispersat posting, you agree to be identified by your IP address. AI additives prevent the aggregation of asphaltene molecules, whereas AD additives are usually non-polymeric surfactants. It has been reported that asphaltene inhibitor performance from lab testing does not necessarily reflect the performance in the field [ 1 ].
Two case studies are presented that demonstrate how asphaltene dispersants can efficiently inhibit pad formation and help reduce asphaltwne dosage. In general asphaltene inhibitors are polymeric chemistries with charged groups that are aimed to function as artificial resins to keep the asphaltenes in solution.
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Pillon, “Effect of dispersants and flocculants on the colloidal stability of asphaltene constituents,” Petroleum Science and Engineering 19 Asphaltene squeeze into the formation has been proposed, but has not been proven effective most due to short squeeze life [ 5 ].
A thermodynamic model has been aspualtene for asphaltene azphaltene by treating asphaltenes as micelles [ 2 ]. As mentioned previously, the asphaltene performance is very oil-specific. Circulating the dispersant in a tank with heated crude has also dispersed the tarry solid into the oil for sale with normal produced crude.
This is partially contributed to the presence of organic acids in the oil. Most asphaltene solvents are based on aromatic solvents, sometimes with added enhancers [ 7 ]. Like asphaltene inhibitors, the performance of asphaltene dispersants is also dispersanr to the types of oils.
Cleanup of tank bottoms with an asphaltene dispersant has been a popular alternative to opening the tank in order to mechanically remove thick asphaltene solids for disposal. Although generally referred to as asphaltene inhibitors by the industrythis class of additives can actually further divided as asphaltene inhibitors and asphaltene dispersants, depending on their mechanisms of preventing asphaltene deposition.
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Most common ones are xylene and toluene. Proceedings of an international conference Diverless and Deepwater Techology: Tell us about your innovation.
If not chosen properly, some asphaltene inhibitors can actually make the asphaltene problem worse by precipitating more asphaltenes compared to an untreated system [ 3 ] [ 4 ].
Society of Petroleum Engineers Disciplines 4. If an asphaltene inhibitor contains long alkyl long chains, it can help disperse any formed asphaltene aggregates as well.
Asphaltene Dispersants for Oil Industry | ICL Innovation
A product that works well on one type of oil may not work well on other fluids. Unlike asphaltene inhibitors, asphaltene dispersants do not prevent asphaltene precipitation but reduce the size of asphaltene particles and keep them in suspension to reduce asphaltene deposition [ 6 ].
Similar effects were observed in squeeze applications of asphaltene dispersants alone or with paraffin inhibitors. It is well-known that the performance of asphaltene inhibitors are oil-specific.
They typically do not show a critical concentration effect and the effectiveness is proportional to the concentration.
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Marques, Gaspar Gonzalez, Jair B. Asphaltenes exist in the form of colloidal dispersions stabilized by other constituents of the crude oil. During transport in pipes, following oil processing, asphaltene builds up on pipes and other equipment. Criteria for dispersant application and selection are discussed, which include the application of a novel laboratory technique to assess asphaltene stabilization in the crude oil.