..." nanoparticle can alter the reservoir wettability and reduces interfacial tension resulting in additional recovery of entrapped oil from pores. Nanoparticles derived from transition metal oxides namely NiO, Co3O4 and Fe3O4 adsorbs asphaltenes from heavy oil which reduces the viscosity of heavy oil and enhances...

... that of the microbial treatment. This technology proves to be feasible and economical in these oil fields. Keywords: heavy oil; microbes; microbial degradation; Oil character improvement Heavy oils are rich in gum and asphaltene, and they have the characters of high freezing point, low flow ability, difficult oil...

... in order to get a proper control of the asphaltene stability during the conversion process. The technical feasibility of this configuration, that overcomes the limit of the traditional thermal and hydrothermal conversion technologies (i.e. product stability), has been demonstrated by operating...

... development was initiated leading to the initial plant in Esso's Ingolstadt Refinery. Conversion of Petroleum residues (vac resid, bitumen, rock asphaltenes) is carried out in the unique short residence time "LR-Mixer Reactor" which achieves a substantial reduction of feedstock contaminants (heavy metals, CCR...

... (DAO), which, mixed with the VGO fraction, can be easily reprocessed to yield distillates via conventional FCC or Hydrocracking Unit. The asphaltene stream, together with the catalyst, is recycled to the HT unit, mixed with fresh feedstock and then reprocessed. In this way, the catalyst can be easily...

... residue heavy crude enhanced recovery Downstream Oil & Gas reactor deep conversion asphaltene deeper conversion conversion distillate h-oil process DEEP CONVERSION OF HEAVY OILS : H-OIL PROCESS AND DEASPHALTING DEEP CONVERSION OF HEAVY OILS VIA COMBINATION OF THE H-OIL PROCESS AND SOLVENT...

... Abstract. Hydrocracking uses hydrogen and catalyst to remove metals and converts asphaltenes and conradson carbons in residua. Hydrocracking processes differ in economics and process complexity; both are affected by how an individual process maintains the catalyst activity that is rapidly lost...

... conversion of heavy feedstocks in combination with more focus on quality aspects of the produ feedstock molecular conversion residue catalyst asphaltene Downstream Oil & Gas rfcc unit stability heavy feedstock enhanced recovery residue pretreatment concarbon conversion refining...

... enhanced depolymerization and fragmentation of asphaltenes and a portion of the low molecular weight asphaltene fragments with low H/C ratio resisted further cracking even at high temperatures and led to the formation of coke like Sediments. Asphaltene cracking showed strong dependency on catalyst pore...

... that the content of saturates and aromatics in the residue is high up to 40-50% with low metal content, high H/C ratio. These components are good feedstock for FCC or Hydrocracking Units. Therefore using the deasphalting process, the asphaltenes and resins (having high metal content and low H/C ratio) which...

... aqueous sodium silicate and ultrasound at ambient atmosphere and room temperature. Not only is a high accumulative recovery observed, but also the recovered bitumen is upgraded which is virtually free of asphaltene. The mecha- nism of the recovery and upgrading of bitumen reveals that the in situ...

... tels que la composition de la charge et du résidu de distillation, la pression partielle en oil sand Downstream Oil & Gas Upstream Oil & Gas complex reservoir bitumen feedstock reactor composition particle Coke Formation Alberta Hydrocracker asphaltene molecule fouling...

... le procédé Schwedt de désulfuration, optimisé pour la dénitrification et la déaromatisation partielle, dans des conditions de pression moyenne. Les fractions les plus lourdes obtenues par le procédé HSC servent de fuel oil pour la centrale existante. Elles contiennent des asphaltènes en dispersion...

... from residues most of the impurities (asphaltenes, heavy resins, metals) which affect the performances of catalytic conversion processes, while minimizing asphalt production. From the SDA unit, the deasphalted oil (DAO) passes through the thermal hydrovisbreaking step where, in the presence...

.... The author replied that there were no generally accepted combustibility indices, although individual companies had their own in- house indices. These are based essentially on a func- tion of asphaltenes, such as Conradson Carbon, and an inverse function of metals content, since metals such as nickel actually...

...UPGRADING THROUGH ASPHALTENIC BOTTOM CONVERSION Chisato Takeuchi, Yoshio Fukui, Yoshimi Shiroto and Munekazu Nakamura; Chiyoda Chemical Engineering & Construction Co., Ltd. 3-13, Moriya-Cho, Kanagawa-ku Yokohama 221, Japan. Abstract. To cope with the ever-increasing need to produce more...

... these differences and discusses the new process and catalyst technologies that have been developed to convert these new feedstocks into distillate fuels. The olefin, paraffin, aromatic and asphaltene contents of these feedstocks influence the overall upgrading schemes, as well as the most amenable product slates...

... to sulphur and nitrogen, residual feedstocks contain appreciable amounts of metals and asphaltenes, which reduce the oil's amenability to hydroprocessing. Metal poisoning shortens catalyst life to some extent, and the presence of particulate matter, as well as the considerable coke-forming tendency...

... receive attention. Residuums-A trend is noted to (amorphous) alumina or SiA1 carriers containing pores of various sizes, having a large pore volume and internal surface. These properties enable deposition of large amounts of metallics and asphaltenes. Catalysts for non-fixed bed operation are briefly...

... Abstract The paper describes a process for the removal of asphaltenes from residual fuels, resulting in a marked reduction of the ash content of the fuel. After addition to the residue of a technical pentane solvent, the asphaltenes precipitate and are separated by a system of hydrocyclones...