Asphaltene is the heaviest and most polar fraction of crude oils, which is usually defined as
a solubility class, soluble in light aromatics, benzene and toluene, and insoluble in paraffins …

Asphaltene deposition in the reservoirs, tubbing, and surface facilities causes serious flow
assurance problems with significant economic implications. Asphaltene flow assurance …

Modern production methods and environmental constraints demand chemical solutions. And
as oilfields age, the need for chemicals to ensure steady production increases. Production …

As discussed in chapter 1, reservoir fluids are in the forms of natural gases, gas
condensates, volatile oils, and black oils. As shown in Table 1.1, these fluids contain …

Asphaltene precipitation and its subsequent deposition is one of the major flow assurance
problems of oil industry. This issue could arise in upstream and downstream sectors. There …

Asphaltenes are defined in terms of their solubility classification. This operational definition
combined with the previous controversy over asphaltene molecular weight have obscured …

It is demonstrated that one may identify up to seven distinct phase transition points due to
separations of heavy organics (saturates, resins and asphaltenes) from petroleum fluids …

Undesirable adsorption of asphaltenes on rock minerals was studied. Asphaltenes are an
important component of crude oil, being also natural surfactant stabilising water/crude oil …

Asphaltenes are the heaviest and the most polar fractions of crude oil and are defined as a
solubility class (typically soluble in toluene but insoluble in n-alkanes like n-heptane) …

Asphaltene precipitation from live crude oils that occurs due to pressure reduction can foul
and clog oil production equipment, at the well surface, in the borehole, and even in the …