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EVENING TALK: New Insights into Turbidite Systems Offshore Mozambique – Arc...

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Imperial College - Royal School of Mines

Prince Consort Rd

Kensington

London

SW7 2BP

United Kingdom

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About the Speaker

Fabio is a Petroleum Geoscientist with a Bsc degree from Universidad Nacional of Colombia and a Msc in Petroleum Geophysics from Imperial College London. In his 12+ yr. as a geoscientist, Fabio has been involved in several positions from exploration to reservoir characterisation projects in the Oil & Gas sector. He joins Eni in the beginning of 2015 as Senior Geologist, where is currently involved in the characterisation and delineation of a number of assets in East Africa. Among its recent duties, he has been involved in an internal R&D project, which aims to understand and unravel the sedimentological concepts behind the deposition of the reservoirs in the area of Mozambique by the integration of data from diverse sources. His interests include: sedimentology, sequence stratigraphy, geophysics, seismic interpretation and geomodelling.

Fabio received the best oral presentation award in the 16th African Conference held in London.

The Abstract

Particular geological settings have formed a massive accumulation of deep-water turbidite reservoirs in the Rovuma Basin. To better understand these exceptional reservoirs, an extensive data set (e.g.: bottom hole cores, piston cores, box cores, cone penetration tests, age dating, AUV, 2D high resolution seismic, 3D seismic data) has been integrated and interpreted in a sequence ranging from the present day sea floor to the overburden sequence and the reservoir levels some 3000 meters below.

The aim of this study was to better understand the sedimentology and the reservoir architecture of ultra-deep water turbidite systems in East Africa. The utilized approach integrates a variety of datasets ranging from 1D to 3D. Interpreted surfaces provide a solid 3D framework and subdivide each reservoir interval into a series of channel complex systems where the NTG distribution is then defined. An iterative process of amplitude extractions and internal re-mapping on seismic is used to refine this framework. This subdivides the systems into zones and sub-zones that represent individual depositional complexes with specific depositional trends. Stratigraphic framework and depositional model are calibrated and crosschecked with well data and a modern analogue to ultra-deep water turbidite systems that has been studied on the seafloor in Mozambique using abundant shallow seafloor datasets such as bathymetry and samples.

The presentation will show the stacking pattern of channel complexes in Mozambique and how reservoir quality seems to be controlled by a combination of sequence stratigraphy, turbidite activity and the influence of bottom currents. Observations on one example on the reservoir level will be compared with high resolution analogues on modern seafloor an older analogue from the overburden sequence. It is highlighted how these concepts help to better understand ultra-deep water deposits in the north of Mozambique.

Authors: Fabio Contreras, Daniel Bendias, Denis Palermo, Massimo Catanzaro, Andrea Luciani, Carla Benvenuti, Filippo Maioli


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Date and Time

Location

Imperial College - Royal School of Mines

Prince Consort Rd

Kensington

London

SW7 2BP

United Kingdom

View Map

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