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

Asphaltenes, as the heaviest and most polar fraction of petroleum, have been characterized
by various analytical techniques. A variety of fractionation methods have been carried out to …

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 …

Emulsions of oil droplets in water but more typically water droplets in oil are common in the
production, transportation, and refining of petroleum and related products. Emulsions of …

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

Each different molecular elemental composition—eg, CcHhNnOoSs—has a different exact
mass. With sufficiently high mass resolving power (m/Δ m 50%≈ 400,000, in which m is …

The aggregation of asphaltenes has been established for decades by numerous
experimental techniques; however, very few studies have been performed on the …

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

A Liaohe crude oil was separated as saturates, aromatics, resins, and asphaltenes (SARA)
and neutral nitrogen fractions. The crude oil and its subfractions were analyzed by negative …

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 …