Deepwater turbidite system analysis, West Africa: Sedimentary model and implications for reservoir model construction

Navarre, Jean-Christophe; Claude, D.; Liberelle, Emmanuel; Safa, P.; Vallon, Gilles; Keskes, N.

doi:10.1190/1.1523754

Cited by 51 publications

(38 citation statements)

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“…Confined channel fills form some of the largest hydrocarbon fields in the world, including in areas of the West Africa margin (Abreau, at al. 2003, Navarre et al 2002 as well as in the U.S.A. Gulf of Mexico (Roberts and Compani 1996, Lee et al 1996, Bramlett and Craig 2002. In addition, they form major conduits for the movement of reservoir quality sands into ultradeep-water locations (Posamentier andKolla 2003, Prather 2000, Gardner and Borer 2000, Beaubouef et al 1999).…”

Section: List Ofmentioning

confidence: 99%

“…The base of the "channel storey" is a sharp erosional surface and the top surface is composed of capping shales. It is important to note that these shales are a major control in reservoir compartmentalization (Navarre et al 2002).…”

Section: Terminologymentioning

confidence: 99%

“…Channels, channel complexes, channel complex sets, etc., are traditionally classified by time scale. An individual channel is the result of a single cycle of erosion, infilling, and abandonment (Sprague et al, 2002), and typically occurs on the 5 th order time scale (Navarre et al 2002). The channel, or "channel storey" is defined by the surfaces at its base and cap.…”

Section: Terminologymentioning

confidence: 99%

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Quantitative Seismic Geomorphology of a Confined Channel Complex, Southern Atwater Fold Belt, Gulf of Mexico, U.S.A.

Morgan¹,

Wood²

2010

Seismic Imaging of Depositional and Geomorphic Systems: 30th Annual

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The largest valley formed in five main stages: initiating from narrow channel incision, widening through lateral incision and sidewall slumping, straightening, and finally flooding and infilling. The valley system is ~20,000 feet across and ~ 1,400 feet deep, with what look like well-developed levees ranging from 700 to 1300 feet at their thickest point extending ~19000 feet away from the channel. This system is underlain by a ~700 foot thick mass transport complex and overlain by younger, low sinuosity leveed channel systems. Both of these systems appear to have been sourced by large submarine drainages, originating from a shelf edge sediment source system to feed the rugose slope with deep-water channel pathways uninhibited by salt wall inflation at the time of valley deposition.Major phases of salt thrusting along the southern edge of the Atwater were contemporaneous with the formation of these large, through-going valley system, which appear to be associated with the period of sheet thickening and development of monoclinal basinward dip related to rafted mini-basin docking.Well log signatures show evidence for armored clay drapes along the valley margins as well as a flattening of lateral accretion packages toward the distal end of the system. The flattening of these packages seems to signal proximity to the fan terminus, which would serve as an important indicator of spatial extent of plays in deep-water.vii

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confidence: 99%

Section: Terminologymentioning

confidence: 99%

Section: Terminologymentioning

confidence: 99%

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Quantitative Seismic Geomorphology of a Confined Channel Complex, Southern Atwater Fold Belt, Gulf of Mexico, U.S.A.

Morgan¹,

Wood²

2010

Seismic Imaging of Depositional and Geomorphic Systems: 30th Annual

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“…The seismic geomorphology has been used as a powerful and efficient tool to characterize the deepwater depositional system and quantitatively measure the dimensions of depositional elements (Posamentier and Kolla, 2003;Wood and Mize-Spansky, 2009). So far, the seismic geomorphologic studies in deepwater setting mostly focused on the geometry of channel complex or submarine fan complex (Navarre et al, 2002;Posamentier and Kolla, 2003;Beaubouef, 2004;Ardill et al, 2005;Cross et al, 2009;Dykstra and Kneller, 2009;Hubbard et al, 2009). For single channel, several researches were done either on single channel's geometric feature or basic quantitative morphology in slope setting (Kolla et al, 2001;Wood and Mize-Spansky, 2009).…”

Section: Introductionmentioning

confidence: 99%

Seismic Geomorphology and Geometric Evolution of a Single Base-of-Slope Deepwater Channel in the near Seafloor of Alaminos Canyon, Northwestern Deep Gulf of Mexico

Jiang

Henriksen

Weimer

2011

Energy Exploration & Exploitation

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The main goal of this article is to investigate the seismic geomorphology and geometric evolution of the single base-of-slope deepwater channel within a depositional sequence in Alaminos Canyon area of northwestern deep Gulf of Mexico. High resolution 3D seismic data was used to characterize the stratigraphic architecture evolution of deepwater deposits within 300 milliseconds interval below the sea floor. The seismic geomorphologic feature of deepwater channel was fast interpreted by combining seismic cross sections and stratal slices rendered by domain transformation. The surface wrapping interpretation results of the deepwater channel indicate that the near seafloor channel evolved from earlier wider and straight channel to later relatively narrow and sinuous channel within a depositional sequence. The channel exhibits vertical aggrading pattern in updip confined setting and changes to appear lateral migrating pattern in downdip unconfined setting through time. The spatial and temporal evolution of this deepwater channel in this study represents the typical evolution of the channel in base-of-slope deepwater setting and can be used as analog to predict and characterize the deepwater hydrocarbon reservoir at exploration depth in this area or other similar settings around the world.

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“…Navarre et al, 2002). Because of the high costs of field development and production, it has become necessary to monitor very accurately the dynamic evolution of the field even at early production stages.…”

Section: Introductionmentioning

confidence: 99%

3D Seismic Constraint Definition in Deep-Offshore Turbidite Reservoir

Nivlet

Lefeuvre

Piazza

2007

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Définition de la contrainte sismique sur un réservoir turbidique en offshore profondGirassol est un champ turbiditique situé dans l'offshore profond Angolais. Les réservoirs de ce champ sont constitués de multiples complexes chenaux-levées s'érodant partiellement. De ce fait, la description de la géométrie des réservoirs, mais également la prédiction quantitative de leurs proprié-tés physiques s'annoncent a priori comme des problème très complexes. Nous montrons ici qu'il est néanmoins possible d'extraire une information géologique 3D quantitative de haute résolution, en intégrant correctement les différents types de données disponibles (sismique pre-stack 3D haute réso-lution, données de puits, vitesses sismiques, informations structurale et stratigraphique). Pour cela, nous proposons un workflow qui se divise en trois parties : -inversion stratigraphique des données pre-stack, afin d'estimer des volumes d'impédances acoustiques et de cisaillement qui expliquent au mieux les données sismiques observées ; -analyse probabiliste en faciès sismiques des résultats de l'inversion s'appuyant sur une technique d'analyse discriminante ; -estimation de volumes de proportions de faciès geologiques s'appuyant sur le résultat de l'analyse précédente, où l'on prend en compte les différences de résolution entre faciès sismiques et géolo-giques afin d'extraire une information géologique moyenne pertinente pour inférer les hétérogénéi-tés des réservoirs à petite échelle. Finalement, nous obtenons un ensemble de volumes renseignés en proportions de faciès géologiques, utilisés dans une étape ultérieure comme une contrainte spatiale pour la modélisation géologique. Abstract

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Deepwater turbidite system analysis, West Africa: Sedimentary model and implications for reservoir model construction

Cited by 51 publications

References 0 publications

Quantitative Seismic Geomorphology of a Confined Channel Complex, Southern Atwater Fold Belt, Gulf of Mexico, U.S.A.

Quantitative Seismic Geomorphology of a Confined Channel Complex, Southern Atwater Fold Belt, Gulf of Mexico, U.S.A.

Seismic Geomorphology and Geometric Evolution of a Single Base-of-Slope Deepwater Channel in the near Seafloor of Alaminos Canyon, Northwestern Deep Gulf of Mexico

3D Seismic Constraint Definition in Deep-Offshore Turbidite Reservoir

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