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The AAPG/Datapages Combined Publications Database

GCAGS Transactions

Abstract


Gulf Coast Association of Geological Societies Transactions
Vol. 55 (2005), Pages 926-935

Stratigraphic Analysis Garden Banks Block 235, Gulf of Mexico

Edwin I. Linares, Abu K. M. Sarwar

Abstract

This paper presents a stratigraphic analysis of three-dimensional seismic data of Garden Banks Block 235 located in the Gulf of Mexico. Three exploratory wells were drilled in Block 235, but no discovery was made in previous exploration efforts in this block. Our examination found a new potential prospect in Block 235.

Detailed geometric and instantaneous attribute analysis by Hilbert transformation revealed the presence of Previous HitdirectNext Hit Previous HithydrocarbonNext Hit Previous HitindicatorsNext Hit, such as bright spots and flat spots. Further studies were conducted to test these Previous HitdirectNext Hit Previous HithydrocarbonNext Hit Previous HitindicatorsNext Hit, confirming the presence of complex stratigraphic changes within a prospective reservoir.

The Previous HithydrocarbonTop pool is in a sand-filled channel, whose origin is related to salt tectonics and deltaic sand deposited during a relatively low standing of the sea level. The salt diapirs created high and lows on the slope, trapping sands that were transported down slope from the north. Dip-oriented salt ridges funneled sand rich turbidite sediments to this specific channel within the Garden Banks area.

The tectonic and stratigraphic framework was interpreted based on an integrated study of well log data, seismic facies, and seismic attributes. The reservoir was delineated and the reserve potential was evaluated, and the oil reserves were estimated.


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