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- Title
GEOQUÍMICA DE HIDROCARBUROS DE LA SUBCUENCA BAJA GUAJIRA, COLOMBIA.
- Authors
García González, Mario; Mier Umaña, Ricardo; E. Cruz Guevara, Luis
- Abstract
This paper proposes two petroleum systems in the Baja Guajira Sub-basin: 1) The Upper Cretaceous Formation- Castilletes Formation system and 2) The Siamana Formation- Macarao Formation-Castilletes Formation system. Geochemical models in two dimensions, calibrated with thermal maturity data, indicate that hydrocarbons have been originated at the base of the stratigraphic sequence and have migrated upward. The critical factor in determining the formation of the Chuchupa and Ballena gas field was the presence of sealing beds in the top of the Castilletes Formation. Well information from the Baja Guajira Sub-Basin reveals a relatively absence of low permeable strata explaining the scatter occurrence of gas field in the Guajira Sub-Basin. The geochemical information along with the geochemical models allow to locate the best prospective area for hydrocarbons, which is located toward the norwest of the Baja Guajira Sub-basin in the offshore region, where it is expected the presence of several hydrocarbon kitchens.
- Subjects
COLOMBIA; GEOCHEMISTRY; HYDROCARBONS; GEOCHEMICAL modeling; GEOLOGICAL formations; GAS fields
- Publication
Boletin de Geologia, 2011, Vol 33, Issue 2, p33
- ISSN
0120-0283
- Publication type
Article