In the present work, we studied catalytic performance of an oil-soluble nickel-based catalyst during aquathermolysis oil-saturated crushed cores from Boca de Jaruco extra-heavy oil field. The decomposition nickel tallate and some aspects in-situ transformation given precursor under steam injection conditions were investigated in a high-pressure batch reactor using XRD SEM analysis methods. chan...

A reservoir rock is a porous geological formation in contact with two liquids : brine and oil. An improved knowledge of rock wettability is of primary importance to estimate the amount of crude oil in underground resources. The petroleum industries have observed that wettability contrasts in sedimentary reservoir rocks are largely correlated to the presence of clays (illite andlor kaolinite) in...

The science of polymers, more specifically, synthesis, characterization, and physicochemical properties in solutions, has wide application in the petroleum industry, which uses polymers as components of fluids or additives to correct problems that affect oil production and/or increase production costs. Polymers are utilized during all phases, from drilling to treatment of oil and water. Researc...

Measuring average quantities in complex mixtures can be challenging for mass spectrometry, as it requires ionization and detection with nearly equivalent cross-section for all components, minimal matrix effect, and suppressed signal from fragments and aggregates. Fragments and aggregates are particularly troublesome for complex mixtures, where they can be incorrectly assigned as parent ions. He...

A coal tar pitch was fractionated by solvent solubility into heptane-solubles, heptane-insoluble/toluene-solubles (asphaltenes), and toluene-insolubles (preasphaltenes). The aim of the work was to compare the mass ranges of the different fractions by several different techniques. Thermogravimetric analysis, size-exclusion chromatography (SEC) and UV-fluorescence spectroscopy showed distinct dif...

The oxidative aging of bitumen was investigated chemically and structurally using SARA analysis, TOF-SIMS AFM. Typical wax-containing non-waxy samples were selected. Short- long-term tests conducted under standard conditions, at prolonged times. For both the bitumen, significantly decreases aromatic fraction same time increase content resins asphaltenes. AFM shows bee-like structures on surface...

Heavy fuel oil has an energy density content comparable to distillate fuels but a very high viscosity that necessitates extra heating before spray combustion inside boiler. is also characterized by asphaltenes, carbon residues, trace metals, such as vanadium and nickel, fuel-bound nitrogen, sulfur. Asphaltenes are heavy polycyclic aromatic compounds with embedded heteroatoms significantly affec...