--> Abstract: Applications of the Trap and Seal Analysis Methodology on Prospects and Reservoirs in Carbonates, Southeastern Mexico; #90063 (2007)

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Applications of the Trap and Seal Analysis Methodology on Prospects and Reservoirs in Carbonates, Southeastern Mexico

 

Sanchez, Raymundo1, Marco Arreguin2 (1) Pemex Exploracion y Produccion, Villahermosa, Tabasco, Mexico (2) Pemex Exploracion y Produccion, Boca del Rio Veracruz, Mexico

 

An example of the application of the trap and seal analysis is presented. A mature, light-oil and gas producing field was interpreted using 3D-seismic recently acquired. The reservoir is Cretaceous carbonate. Four blocks adjacent to the field were identified and development prospects were proposed in each block. A pre-drill trap and seal analysis was conducted. Potential hydrocarbon columns were estimated and risk-assessment for both trap and seal elements was done. The analysis included both the QC of maps and assessment of top seal capacity. Fault plane profiles were constructed in order to assess the lateral seal capacity since the prospects were fault-dependant traps.

 

As a result of the study, it was concluded that lateral seal had the higher risk. The fault plane profiles showed that there is reservoir-to-reservoir juxtaposition between the different blocks. This conclusion was confirmed when a well was drilled in one of the studied traps, then the development strategy was changed for this field

 

AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California