Petroleum accumulation and leakage in a deeply buried carbonate reservoir, Nispero field (Mexico)
Por:
Bourdet J., Pironon J., Levresse G., Tritlla J.
Publicada:
1 ene 2010
Resumen:
The filling history of the Nispero deeply buried Lower Cretaceous carbonate reservoir (below 4000 m) from the south part of Gulf of Mexico was studied using a combination of data from petrography, stable isotopes and fluid inclusions and compared with a one-dimensional burial model to derive timing. A combination of techniques such as microthermometry, confocal laser scanning microscopy (CLSM) and Raman microspectroscopy have been used to characterize the different fluid inclusion assemblages and discriminate between the reequilibrated and the preserved fluid inclusions. The Nispero reservoir is composed of a fractured finely crystalline replacement dolostone. A first generation of fractures is filled by a non-planar dolomite cement, and a second generation by a planar-E dolomite cement and a blocky sparite. The reservoir is lastly stylolitised. Dolomite has delta(13)C values between 0.9 and 4.0 parts per thousand (PDB) and delta(18)O values between -4.5 and -10.8 parts per thousand (P
Filiaciones:
Bourdet J.:
G2R, Nancy-Université, CNRS, BP 239, 54506 Vanduvre-lès-Nancy, France
Pironon J.:
G2R, Nancy-Université, CNRS, BP 239, 54506 Vanduvre-lès-Nancy, France
Levresse G.:
UNAM, Ctr Geosci, Juriquilla, Queretaro, Mexico
Tritlla J.:
UNAM, Ctr Geosci, Juriquilla, Queretaro, Mexico
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