Cédric Carpentier

University of Lorraine | UdL · UMR 7359 GeoRessources

The sequence stratigraphic framework of initiation and growth of carbonates in environments impacted by siliciclastic inputs is highly variable because of the biogenic nature of the sedimentary production and its sensitivity to environmental conditions. Using panorama interpretations, logging, and characterization of benthic communities, the mixed...

Nummulitic Limestones deposits are preserved along the tectonic contact between the Variscan basement and Alpine units of Corsica. These marine carbonates, dated from the Late Palaeocene to the Middle Eocene, were deposited within a foreland flexural basin that is considered to be the southern continuation of the Alpine foreland basin of southeast...

Transgressive marine carbonates commonly represent the initial infill of flexural foreland basins. In this context, parameters controlling carbonate distribution and facies can be both global and local. Global parameters essentially relate to flexural subsidence of the lithosphere, orogenic front advance and eustasy, while local factors include inh...

Newly formed smectite and palygorskite and their association are good proxies of a subtropical climate alternating dry and warm/ humid seasons during the late Cretaceous during the formation of the Chu-Syrasu basin. The association of fine-grain clays, smectite and fibres (palygorskite) and the occurrence locally of grains of albite, and natrolite,...

In carbonate rocks, natural production of sulfuric acid can form karstic cavities. Where both epigenic and hypogenic speleogeneses have taken place, these processes are challenging to constrain, especially if there is more than one source of sulfur involved. Thanks to an innovative approach coupling geomorphology with measurements of multiple sulfu...

Jurassic carbonate strata in the eastern Paris Basin exhibit several generations of faults, tension gashes and stylolites. Although their relative chronology can sometimes be determined according to cross-cutting relationships, the duration of major deformation phases and their influence on fluid flow and carbonate cementation are still uncertain....

In the southeastern Alps and in Corsica, the structure of the Alpine foreland basin is superimposed on inherited structures dating from the Santonian to Eocene Pyrenean orogeny. The Pyrenean orogeny is the result of the collision between Iberia and Europe, which has structured the substratum of the subsequent Alpine foreland basin. This basin was f...

Assisted well correlation aims at complementing sedimentological expertise with computational rigor to increase automation, improve reproducibility and assess uncertainties during stratigraphic correlation. In this work, a computer-assisted method is proposed to automatically generate possible well correlations based on facies interpretation, dipme...

Computer-assisted stratigraphic correlation can help to produce several scenarios reflecting interpretation uncertainties. In this work, we propose a method which translates sedimentary concepts into a correlation cost for each possible stratigaphic correlation. All these correlation costs are used to populate a cost matrix in order to apply the Dy...

The link between fluid circulation schemes and basin histories remain one of the most valuable tools to understand the diagenetic evolution of petroleum reservoir. This study proposes a diagenetic model for the Deep Lacq reservoir constrained by petrography, geochemistry, fluid inclusions studies and basin modeling analyses. Drill cores penetrating...

Late Jurassic coral assemblages and their ecological reef zonation (as a function of water depth) were studied in 490 m deep shafts dug for the underground laboratory of the French National Agency for Radioactive Waste Management (ANDRA). Based on a quantitative approach, several ecozones are distinguished. Identified ecozones represent evolution f...

Hypogenic caves, linked to carbonate rock dissolution due to CO2- and H2S-rich ascending deep waters, represent more than 10% of karstic networks worldwide; a proportion that increases as these systems are better constrained. However, interaction between hypogenic and epigenic processes is still poorly understood, especially since the subsequent in...

Well-log interpretation and chronostratigraphic well correlation are essential steps in the basin and reservoir modeling, as they provide clues for the quantification of depositional history and flow units. At the sub-seismic scale (1 to 100 meters), correlations affect the layer geometry and the geobodies connectivity but are subject to many uncer...

The polyphasic tectonic evolution of the northern Pyrenees (southern France) makes the context of foothills a privileged place for deep fluid circulations. Among these, the presence of CO 2-and H2S-rich deep brines has been identified in the South-Aquitaine oil & gas fields, trapped within Jurassic and Cretaceous carbonate formations. Expelled from...

Fluid-rock interaction is of key interest for deciphering the geodynamic history of complex geological environments. In this paper, we describe the mineralogy and petrography of the Rousse reservoir (the Upper Jurassic “Dolomie de Mano” formation) as well as the reconstruction of its thermal and pressure history. We also investigate the base of the...

We discuss the sampling and the volumetric impact of stratigraphic correlation uncertainties in basins and reservoirs. From an input set of wells, we evaluate the probability for two stratigraphic units to be associated using an analog stratigraphic model. In the presence of multiple wells, this method sequentially updates a stratigraphic column de...

Interactions between fracturing, fluid circulations and fluid chemistry in hyper-extended margins are still poorly described as most of them are located offshore, buried underneath post-rift sediments. The southern Aquitaine basin and the northern Pyrenees constitute an appropriate case study to investigate these interactions since a model of hyper...

of this paper are to propose a geodynamic and sequential framework for the late Triassic and early Jurassic of central and south Tunisia and to evidence the impact of local tectonics on the stratigraphic architecture. Facies of the Upper Triassic to Lower Jurassic of Central and Southern Tunisia have been interpreted in terms of depositional enviro...

Le caractère réservoir d’une roche dépend principalement de ses conditions pétrophysiques (porosité et perméabilité), qui évoluent au cours du temps mais qui dépendent aussi fortement des conditions de pression et de température, lesquelles varient tout au long de l’enfouissement. Certains réservoirs carbonatés montrent des valeurs de porosité-perm...

An integrated stratigraphic study was conducted on a Kimmeridgian succession of 3rd-order cycles including marls and limestones in a shelf context at Bure (Paris Basin). The study was possible due to the exceptional opportunity provided by well-boring activities related to the construction of an underground laboratory of the French National Agency...

Porous micritic facies, either primary chalks or resulting from secondary destructive micritization, can constitute important hydrocarbon or water reservoirs. Characterization of reservoir properties and the understanding of factors which controlled the distribution of porosity are of primary interest to evaluate the prospective reserves. Middle an...

The existence of high quality (high porosity – high permeability) reservoirs in carbonated rocks at great depth highlights a paradox. Indeed, classical modeling of rock evolution during burial forecasts a strong decrease of porosity with depth, thus predicting a lack of economically interesting reservoirs under 4000 m. So how these reservoirs come...

We propose a method to manage uncertainties about the layering of 3D reservoir models, using stochastic correlations of sedimentary units identified along wells, according to the sequence stratigraphy paradigm. A stratigraphic model represents the architecture of the stratigraphic succession of an area. Sequence stratigraphy is a common paradigm in...

Suite à la hausse de la demande mondiale en énergie (et par conséquent en hydrocarbures), des réservoirs pétroliers tels les réservoirs carbonatés de grande profondeur (Deeply Buried Reservoirs DBR) sont aujourd’hui la cible privilégiée de l’exploration et de l’exploitation pétrolière. L’étude des mécanismes mis en jeu au cours de la mésogénèse des...

It is usually very difficult to identify and quantify the relative influence of tectonics, eustasy and climate on carbonate system evolution from sedimentary records. In order to improve our understanding of these mechanisms, we have traced for the first time, the evolution of the eastern Paris Basin platform throughout the entire Jurassic period....

Several diagenetic models have been proposed for Middle and Upper Jurassic carbonates of the eastern Paris Basin. The paragenetic sequences are compared in both aquifers to propose a diagenetic model for the Middle and Late Jurassic deposits as a whole. Petrographic (optical and cathodoluminescence microscopy), structural (fracture orientations) an...

The preservation of good petrophysical properties (high porosity / high permeability) at great depth in carbonate rocks may lead to the existence of a deeply buried reservoir (DBR), a target of interest for the oil industry. One of the key processes controlling diagenesis of the burial environment is Pressure Solution Creep (PSC), an efficient comp...

Chemo-mechanical processes involved in the deep burial diagenesis of carbonate petroleum reservoirs are still poorly understood. To better understand these processes and explain how porosity and permeability can be preserved at the great depth of DBR (Deeply Buried Reservoirs), we developed an experimental device allowing both the simulation of hig...

In the oil industry, the preservation of petrophysical properties at great depth may lead to the existence of a deeply buried reservoir (DBR), a favoured target in the field of petroleum exploration and exploitation. The accurate prediction of reservoir quality requires an understanding of the key controlling diagenetic processes. Pressure solution...

Diagenesis of carbonate rock is of great importance in the understanding of the preservation of good reservoir properties at great depth. Pressure Solution is a coupled chemical – mechanical process occurring during diagenesis and generating a reduction of porosity with depth. In this study, we evaluated the effects of pore fluid chemistry, mainly...

The Late Oxfordian–Early Kimmeridgian interval of the eastern part of the Paris Basin is charac- terized by a carbonate succession deposited in shallow- marine platform environments. The Gudmont-Villiers section is represented by deposits ranging from barrier to typical lagoonal environments often poor in macrofossils. Previously unpublished calcar...

The Middle Oxfordian of the eastern Paris Basin constitutes a remarkable example of the growth and demise of a carbonate platform. Fischer plots, sedimentary and diagenetic features allow the identification of four depositional cycles (S5 to S8) in the Transversarium Zone; they are inserted in a lower frequency cycle of increased/decreased accommod...

In the present study, the difficulty which lies in the identification of sea-level fall discontinuities in deep depositional environments led the authors to use the transgressive surfaces (i.e. the most noticeable surfaces in the present case) to determine depositional cycles. Four (3rd order?) Lower and Middle Oxfordian cycles were identified (S1,...

A new fauna of crustacean decapods has been discovered on the occasion of the digging of two large wells in Kimmeridgian marls and limestones at Bure (Lorraine, France). Among the stratigraphically well repaired identified fossils Thalassinoidea are abundant with the species Etallonia isochela (Woodward, 1876). Other fossils are represented by a Pa...

Oxfordian reefal episodes of Lorraine and Burgundy have a long time been considered as contemporaneous. Biostratigraphic data and sequential evolutions peculiar to each region indicate their structural autonomy during Oxfordian times. A north-south-oriented well-logging transect shows that, during the Middle Oxfordian, a shallow reefal platform dev...

Rapporteurs : M. André STRASSER Professeur, Université de Fribourg, Suisse M. Jacques THIERRY Professeur, Université de Dijon Examinateurs : M. Alain TROUILLER Ingénieur Andra M. Fabrice MALARTRE Maître de Conférences, Université de Nancy INPL Invité : M. Jean-Loup RUBINO Ingénieur Total

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The study of sedimentary facies in the quarry of Dompcevrin (Middle Oxfordian) located northwestward of St-Mihiel (Meuse department) provides evidences of high-energy depositional conditions. The occurrence of beaches associated with hurricane coral breccias containing megaclasts is characteristic of platform edge environments. The open sea was loc...

Middle to Upper Oxfordian reefs of a shallow marine carbonate platform located in northeastern France show important facies changes in conjunction with terrigeneous contents. The Pagny-sur-Meuse section shows coral-microbialite reefs that developed both in pure carbonate limestones and in mixed carbonate-siliciclastic deposits. Phototrophic coral a...

Wells being dug at Bure, France, in strata of Kimmeridgian age have uncovered a diverse fauna of reptant decapods.

Wells being dug at Bure, France, in strata of Kimmeridgian age have uncovered a diverse fauna of reptant decapods.