Asphaltene Stability in Crude Oil during Production Process

Investigation of Asphaltene Stability in the Iranian Crude Oils

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

Influence of Asphaltene Aggregation and Pressure on Crude Oil Emulsion Stability

My supervisor introduced me to the field of surface and colloid chemistry in 1997, while studying physical chemistry as an undergraduate student at the University of Bergen. Little did I then know that the work would lead me into the petroleum industry, and a struggle with "the good and the bad asphaltenes". As an experimentalist, the work in the laboratory has, more often than not, provided re...

I PROCESS CONSIDERATIONS IN CRUDE OIL BIODESULFURlZATION

Biodesulfurization offers an attractive alternative to conventional hydrodesulfurization due to the mild operating conditions and reaction specificity afforded by the biocatalyst. The enzymatic pathway existing in Rhodococnrs has been demonstrated to oxidatively desulfurize the organic sulfur occurring in dibenzothiophene while leaving the hydrocarbon intact. In order for biodesulfurization to ...

Crude Oil Emulsions – Composition Stability and Characterization

Asphaltene Precipitation in Crude Oils: Theory and Experiments

The precipitation of asphaltenes in two Mexican crude oils was measured using a combination of high-pressure isothermal expansion and atmospheric titration with nalkanes. Experiments were carried out from the liveand tank-oil type of samples of the same crude oils. For the oils investigated, compositional data, precipitation phase diagrams, and bubble point pressures are reported. A theoretical...