Changes

The increasing use by academic institutions of high-resolution swath bathymetry and sea-floor imaging techniques, coupled correlating seismic anomalies from 3D mapping with core and well logging data reveals the depositional geometry and sedimentological characteristics of coarse-grained contourites.

The increasing use by academic institutions of high-resolution swath bathymetry and sea-floor imaging techniques, coupled correlating seismic anomalies from 3D mapping with core and well logging data reveals the depositional geometry and sedimentological characteristics of coarse-grained contourites.

Fine-grained drifts can locally and regionally develop large and thick accumulations, which have an important seal potential for trapping hydrocarbon.  

Contourite deposits must present some particular characteristics. Coarse-grained sediments,preserving good petrophysical characteristics, such as porosity, permeability, and lateral and vertical transmissibility of fluids, must form part of the deposit, wich could be a great reservoir.  

The depth, thickness, extent and properties of these sands. This sand is clean and well especially selected, and therefore very porous and permeable, gives ideal conditions for hydrocarbons remain stored .

Fine-grained drifts can locally and regionally develop large and thick accumulations, which have an important seal potential for trapping hydrocarbon. The depth, thickness, extent and properties of these sands are determining.  

Contourite deposits must present some particular characteristics. Coarse-grained sediments,preserving good petrophysical characteristics, such as porosity, permeability, and lateral and vertical transmissibility of fluids, must form part of the deposit. Some reliable criteria for recognizing this, both in seismic profiles and lithology, need to be identified to predict their occurrence. Our findings could be an important change in future hydrocarbon exploration targets.

Some reliable criteria for recognizing this, both in seismic profiles and lithology, need to be identified to predict their occurrence. Our findings could be an important change in future hydrocarbon exploration targets.

== Bibliography ==

== Bibliography ==

* Rebesco M. and Camerlenghi A., 2008. Contourites. El SevierScience

* Rebesco M. and Camerlenghi A., 2008. Contourites. El SevierScience

* Stow D. A. V., Pudsey C. J., Howe J. A., Faugères J.-C. and Viana A. R., 2002. Deep-WaterContouriteSystems: Modern Drifts and Ancient Series, Seismic and Sedimentary Characteristics. Geological SocietyMemoir No. 22

* Stow D. A. V., Pudsey C. J., Howe J. A., Faugères J.-C. and Viana A. R., 2002. Deep-WaterContouriteSystems: Modern Drifts and Ancient Series, Seismic and Sedimentary Characteristics. Geological SocietyMemoir No. 22