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

Asphaltenes, the most aromatic of the heaviest components of crude oil, are critical to all
aspects of petroleum utilization, including reservoir characterization, production …

For decades, discussion of asphaltene structure focused primarily on molecular weight. Now
that it is widely accepted that asphaltene monomers are between∼ 250 and 1200 g/mol …

The Yen–Mullins model, also known as the modified Yen model, specifies the predominant
molecular and colloidal structure of asphaltenes in crude oils and laboratory solvents and …

Asphaltenes, the most aromatic of the heaviest components of crude oil, are critical to all
aspects of petroleum use, including production, transportation, refining, upgrading, and …

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

Previously, asphaltene science had been hindered by many significant uncertainties
regarding molecular weight, molecular structure, and nanocolloidal characteristics in …

Advances in high-resolution Fourier transform ion cyclotron resonance mass spectrometry
(FT-ICR MS) enable molecular-level characterization of ultracomplex asphaltene samples …

Analytical chemistry is powerful in analyzing complex mixtures of crude oil and brine
subsurfaces on the basis of atomic and molecular levels. Geochemistry applies chemical …

Laser desorption laser ionization mass spectra of 23 model compounds and 2 petroleum
asphaltene samples are presented. These experiments involved desorption by irradiation …