The influence of different factors on the asphaltene stability in three iranian crude oils was evaluated. Compositional studies ...

At present, the regeneration agent with mineral oil as main component is widely used. However, its strong volatility, nonrenewability, and other shortcomings restrict development of technology. In this study, waste vegetable was used to prepare regenerated aging asphalt. The change in microstructure asphalt explored content time. results showed that addition could effectively supplement content...

In this work, the natural depletion process in sandstone and carbonate cores was modeled to investigate the asphaltene deposition mechanisms. A new permeability reduction correlation was proposed based on the Minssieux model that considers a combination of surface deposition, pore throat plugging, and filtration cake mechanisms. The results showed that the filtration cake is a dominant asphalte...

Asphaltene are large molecular crude constituents and their existence is related to numerous problems. However, nanofluids have proven be a very stable effective way of dealing with asphaltene agglomerations. This research addresses the effectiveness as compared traditional available (FLOW-X) commercial inhibitors. The synthesis characterization two green NPs preparation were performed successf...

The heavy crude oil consists of thousands of compounds and much of them have large molecular weights and complex structures. Studying the aggregation and diffusion behavior of asphaltenes can facilitate the understanding of the heavy crude oil. In previous studies, the fused aromatic rings were treated as rigid bodies so that dissipative particle dynamics (DPD) integrated with the quaternion me...

Asphaltene precipitation/deposition is considered a problem of formation damage, which can reduce the oil recovery factor. In addition, asphaltenes be deposited in pipelines and surface installations, causing serious complications guaranteeing runoff, decreasing production wells. The precipitation minimized by reducing flowrate or using chemical inhibitors. Analyzing stability trend petroleum v...

Asphaltene deposition in the pore-throats of reservoir rock reduces permeability, which leads to a reduction oil production. The amount deposited asphaltene is generally expressed by an equation that sums three types deposition: surface deposition, pore-throat plugging, and entrainment asphaltene. plugging accelerated increase asphaltene, termed snow-ball effect. Wang Civan's model commonly use...