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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Information on ICL’s current product line can be found at www. The proposal would need to clearly describe the technical concept chemical approach, structure if IP protected and proof of concept results, if available. Peer reviewed only Published between: 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.
Log in to your subscription Username. A thermodynamic model has been proposed for asphaltene inhibition by treating asphaltenes as micelles [ 2 ]. 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. There are two types classes of additives used to tackle the asphaltene problem at the production sites. Since asphaltene inhibitors prevent precipitation, they are best applied upstream of the location where asphaltene onset pressure occurs, typically downhole.
Asphaltene inhibitor – OilfieldWiki
AI additives prevent the aggregation of asphaltene molecules, whereas AD additives are usually non-polymeric surfactants. They have been successfully applied for inhibition and removal of asphaltene deposits in production equipment. As mentioned previously, the asphaltene performance is very oil-specific. Certain polymeric dispersants increase asphaltene solubilization in hydrocarbon media, and when used in conjunction with emulsion breakers, facilitate the demulsification process.
Most common ones are xylene and toluene. AI agents are polymeric resinous materials that stabilize the asphaltenes and prevent destabilization, agglomeration and flocculation of asphaltenes by forming strong association with asphaltene moieties.
One major problem is their agglomeration at the water-oil interface of crude oil emulsions. In general asphaltene inhibitors are polymeric chemistries with charged groups that are aimed to function as artificial resins to keep the asphaltenes in solution.
Please post helpful feedback. It is well-known that the performance of asphaltene inhibitors are oil-specific. Petroleum asphaltenes are defined as a solubility class of the heavy components in crude oil which are insoluble in nonpolar solvents.
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Publishers Content Coverage Privacy. Marques, Gaspar Gonzalez, Jair B. During transport in pipes, following oil processing, asphaltene builds up on pipes and other equipment.
Therefore, some asphaltene inhibitors can function as asphaltene dispersants. Therefore, it is very important to conduct inhibitor screening on the actual crude sample. 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.
Most asphaltene solvents are based on aromatic solvents, sometimes with added enhancers [ 7 ]. Asphaltenes exist in the form of colloidal dispersions stabilized by other constituents of the crude oil. If an asphaltene inhibitor contains long alkyl long chains, it can help disperse any formed asphaltene aggregates as well. The technique monitors asphaltene agglomeration while undergoing titration with an incompatible solvent precipitant.
They typically do not show a critical concentration effect and the effectiveness is proportional to the concentration. Dead oil can be used as a preliminary screening method, but live oil testing is recommended as it more closely mimics the field conditions.
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Proceedings of an international conference Diverless and Deepwater Techology: Once agglomeration occurs, destabilized asphaltenes can form a thick pad in the dehydration equipment, which significantly reduces the demulsification rate. They provide real inhibition since they prevent the aggregation of asphaltene molecules and therefore shift the asphaltene onset pressure.
Gonzalez, “Stabilization of asphaltenes by phenolic compounds extracted from cashew-nut shell liquid,” Journal of Applied Polymer Science, 73 1 Pillon, “Effect of dispersants and flocculants on the colloidal stability of asphaltene constituents,” Petroleum Science and Engineering 19 As a technology incubator, ICL Innovation is looking only for innovative technologies that may be further developed and commercialized through a business unit in ICL.
Contact Us Subscribe to newsletter How to contribute? Asphaltene deposition is a major problem both upstream and downstream in the petroleum industry. Asphaltene squeeze into the formation has been proposed, but has not been proven effective most due dispeersant short squeeze life [ 5 ]. Our research and development laboratories in North America, South America, Europe, Asia and Australia are staffed with industry experts and state of the art analytical and application equipment.