The processes in which crude oil asphaltene aggregates are adsorbed onto surfaces have been the subject of debate recent years. Different thermodynamic, theoretical, and empirical models be...

Background . The production of oil and gas by horizontal wells, despite all its advantages, is subject to exploratory operational complications. At the final stage their development, such fields become hard-to-recover reserves. Production often associated with a high water cut, significant drop in reservoir pressure, precipitation asphaltene deposits. Aim To analyze problem early indication flo...

Characterizing Asphaltene Deposition in the Presence of Chemical Dispersants in Porous Media Micromodels Yu-Jiun Lin, Peng He, Mohammad Tavakkoli, Nevin Thunduvila Mathew, Yap Yit Fatt, John C. Chai, Afshin Goharzadeh, Francisco M. Vargas, and Sibani Lisa Biswal Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States Department of Chemical Engin...

'Solids formed from coprocessing of 10% coal/90% resid were characterized by solvent extraction, elemental analyses, C'3/C'z isotope ratio, ESR, and GPC techniques. adsorbed petroleum-derived material (oil, resin, asphaltene). The THF insolubles in the product contained high oxygen, low vanadium and a higher level of polyaromatic radicals than the soluble fraction, indicating that these insolub...

Asphaltenes are a class of high-density molecules obtained from crude oil. The implications of asphaltene stability within the oil matrix production affect the whole oil supply chain production. This reduces the oil recovery because of mobility changes in the reservoir [1]. So far, the experimental and theoretical investigations no have addressed discussions at electronic level regarding a nano...

In crude oil, asphaltene is one of the fractions that may be dissolved in aromatics like benzene or toluene but cannot alkanes n-heptane, n-pentane, petroleum ether (a mixture alkane compounds). A typical difficulty oil recovery and refinery processes precipitation, which happens when stream's pressure, composition, temperature change. So, stability needs to looked at find out how likely it for...