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Source identification of sea surface oil with geochemical data in Cantarell, Mexico

2014; Elsevier BV; Volume: 117; Linguagem: Inglês

10.1016/j.microc.2014.06.025

1095-9149

Caroline C. Texeira, Celeste Yara dos Santos Siqueira, Francisco Radler de Aquino Neto, Fernando Pellon de Miranda, José Roberto Cerqueira, Adriano O. Vasconcelos, L. Landau, Miguel Herrera, Karen Bannermaman,

Atmospheric and Environmental Gas Dynamics

Abstract The Gulf of Mexico is one of the world's largest petroleum regions. Cantarell is an important oil field located in the Akal Pillar province. This region is characterized by several oil seeps. However, there is no consensus on the Cantarell oil seep subsurface provenance. Surface oil samples (seepage) and subsurface oil samples (reservoirs) from the Akal Pillar province were analyzed using gas chromatography with a flame ionization detector (GC-FID) and gas chromatography with a mass spectrometry detector (GC-MS). The data obtained were used to identify and characterize biomarker and diamondoid distributions. Multivariate statistical analyses of geochemical results were made to identify the Cantarell oil seep origin. Geochemical analysis showed small differences between the results which could help the correlation studies between the samples. Cluster analysis indicated a good correlation of the seepage samples with a unique subsurface oil sample, CAN8, from the reservoir in the Paleocene/Cretaceous breccia.