Turbidites Characterization From Seismic Stratigraphy Analysis: Application to the Netherlands Offshore F3 Block

Abstract

Abstract

The generation of geological models (stratigraphic, structural and paleo-environmental) that allow the localization of geobodies such as turbidites and submarine channels is nowadays one of the most useful tools used by geoscientist for the generation of new drilling opportunities to increase production. Now, using methods such as sequence stratigraphy, geometrical and stratigraphic seismic attributes linked to well log and core information define the basis for the interpretation of both lithostratigraphy and chronostratigraphy of these bodies. Similarly, these models allow the interpreter to reconstruct the depositional environment and deformation history. This paper shows the chronostratigraphic stages proposed for the Netherlands Offshore F3 Block which are based on the termination of reflectors and seismic facies. Also, a set of system tracts such as TST, HST, FSST and LST were identified in the basin. The available dataset provided the information to identify the geometry and changes in the sedimentation patterns of the stratigraphic sequences from the Miocene to the present defining a 3D model of the sedimentological and structural architecture. Last but not least, based on the stratigraphic model previously defined, a 3D model of the main geobodies derived from submarine channels and fluvio-deltaic setting was generated.

Applications

One of the most important applications of the study presented in this paper is the seismic characterization of geobodies linked to a sequence stratigraphy model which gives the interpreter the basis for hydrocarbon exploration and prospect definition.

Results & Conclusions

The application of seismic stratigraphy linked to seismic attributes and lithostratigraphic/chronostratigraphic models defined from well information allowed the definition of the main stratigraphic sequences from the Miocene to the present of the Netherlands Offshore F3 Block. Each sequence was characterized by its lower and upper limits and seismic facies association. The stratigraphic horizons and seismic facies defined were correlated to the available well information.

On the other hand, a three dimensional model of geobodies interpreted was generated. These geobodies were characterized using seismic attributes defining their thickness and continuity.

Technical Contributions

This study contributes to the generation of methodologies to reconstruct the depositional environment, deformation history, identification and seismic characterization of geobodies.

AAPG Datapages/Search and Discovery Article #90260 © 2016 AAPG/SEG International Conference & Exhibition, Cancun, Mexico, September 6-9, 2016