Hydrocarbon anomalies using airborne gamma radiation over the unconventional petroleum system of the South Portuguese Zone, Portugal. (December 2020)

• Record Type: Journal Article
• Authors: Barberes, Gabriel A.; Barata, Maria Teresa; Pena dos Reis, Rui; Spigolon, André L.D.
• Is Part Of: Applied radiation and isotopes. Volume 166(2020:Dec.)
• Publication Date: 2020-12
• Subjects: Remote sensing -- Gamma radiation -- Hydrocarbon anomalies -- South Portuguese Zone -- Carboniferous shales -- Unconventional petroleum geology; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2020.109406
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: The use of airborne gamma radiation in hydrocarbon exploration is widely known to define possible areas of microseepage. At this paper, the radiometric survey was applied to identify hydrocarbon anomalies over the South Portuguese Zone (SPZ) unconventional petroleum system. Spectral gamma-ray data were processed to thorium normalization method. Obtained results show positive anomalies mainly on the southwest sector of the SPZ, corroborating the data obtained through fluid geochemical analysis, revealing other several surface sweet spots for hydrocarbons emanations. Highlights: Surface geochemical prospecting for hydrocarbon exploration. Airborne gamma radiation applied to unconventional petroleum system characterization. Hydrocarbon microseeps detection over the South Portuguese Zone.