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Article(8)
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Journal of Petroleum Geology(2)
Estudios Geologicos(1)
International Journal of Environmental Analytical Chemistry(1)
Journal of Analytical and Applied Pyrolysis(1)
Journal of Petroleum Science and Engineering(1)
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Geología económica(5)
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scopus(8)
Comparative study of crude oils from the Machete area in the Eastern Venezuelan Basin by pyrolysis of asphaltenes
ArticleAbstract: This work is an analysis of crude oil samples from the two most recent producing wells in the MachetPalabras claves:Asphaltenes, Biomarkers, Chemical indicators, Eastern Venezuelan Basin, Extra-heavy oils, GC-MS techniques, Machete area, Orinoco Tar Belt, pyrolysis, SaturatesAutores:Galarraga F., Gonzalo Márquez, Martïnez A., Reátegui K.Fuentes:scopusGeochemical composition of beach tar from the se coast of the paria peninsula, ne venezuela: Derivation from natural seepages
ArticleAbstract: Tar residues ("tarballs") occur frequently on the SE coast of the Paria Peninsula, NE Venezuela. ThiPalabras claves:Gulf of Paria, Los Bajos fault, Marine seepages, Naparima Hill Formation, organic geochemistry, Seepage oils, Tarballs, Trinidad, VENEZUELAAutores:Carlos Sierra, De Freitas K.A., Érica Lorenzo, Escobar M., Fernàndez R., Galarraga F., Gallego J.R., Gonzalo MárquezFuentes:scopusEffects of Steam Soak on the Two Eocene Heavy Crude Oils from the Urdaneta District (Venezuela)
ArticleAbstract: Simulation studies of steam-alkaline injection were made using the only two Eocene viscous crude oilPalabras claves:Biomarkers, Oil recovery, Simulation of steam-alkaline injection, Urdaneta District, Viscous crudesAutores:Galarraga F., Gonzalo Márquez, Permanyer A.Fuentes:scopusMain factors controlling the compositional variability of seepage oils from trujillo state, western venezuela
ArticleAbstract: The organic geochemistry of eighteen samples of seepage oils from Trujillo State, Western Venezuela,Palabras claves:biodegradation, Hydrocarbon flow rate, Oil seeps, Trujillo State, VENEZUELA, Water washingAutores:Escobar M., Galarraga F., Gonzalo Márquez, Manuel Martínez, Tocco R., Urbani F.Fuentes:scopusLichens as biomonitors for the determination of polycyclic aromatic hydrocarbons (PAHs) in Caracas Valley, Venezuela
ArticleAbstract: Biomonitoring of PAH air pollution using lichens was carried out. Sixteen PAHs were studied in 11 loPalabras claves:Atmospheric pollution, Caracas, Fossil fuels, PAHs, Pyxine coralligera MalmeAutores:Benzo Z., Fernàndez A., Fernàndez R., Galarraga F., Gonzalo Márquez, Hernández M. J.E., Requiz M.Fuentes:scopusTrace elements of Paleocene Táchira coals, Southwestern Venezuela: A geochemical study
ArticleAbstract: The concentration and distribution of 35 elements in 78 coal samples from the Táchira State coal fiePalabras claves:Coal, factor analysis, geochemistry, Trace elements, VENEZUELAAutores:Carmen Milena López, Escobar M., Esteves I.H., Galarraga F., González R., Manuel MartínezFuentes:scopusV/Ni ratio as a parameter in palaeoenvironmental characterisation of nonmature medium-crude oils from several Latin American basins
ArticleAbstract: Statistical descriptive analyses were performed taking into account sulphur, vanadium and nickel conPalabras claves:crude oil group, generic diagram, oil prospecting, palaeoenvironmental characterization, vanadium:nickel ratioAutores:Galarraga F., Gonzalo Márquez, Llamas J.F., Manuel Martínez, Martïnez A., Reátegui K.Fuentes:scopusThe effects of sulfur on the weathering extent of carbon. A companson of two mines in Hato de la Virgin, State of Tachira, Venezuela
ArticleAbstract: Ten bituminous coal samples, showing several weathering levels, were collected at different depths iPalabras claves:Coal, geochemistry, OXIDATION, Sulfur, VENEZUELA, WeatheringAutores:Escobar M., Esteves I.H., Galarraga F., González R., Manuel MartínezFuentes:scopus