Impact of sedimentology and diagenesis on the petrophysical properties of a tight oolitic carbonate reservoir. The case of the Oolithe Blanche Formation (Bathonian, Paris Basin, France)

Makhloufi, Yasin; Collin, Pierre‐Yves; Bergerat, Françoise; Casteleyn, Lisa; Claes, Steven; David, Christian; Menéndez, Beatriz; Monna, Fabrice; Robion, Philippe; Sizun, Jean‐Pierre; Swennen, Rudy; Rigollet, Christophe

doi:10.1016/j.marpetgeo.2013.08.021

Cited by 45 publications

(34 citation statements)

References 51 publications

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“…This observation is consistent with our previous studies focusing on the capillary coefficient values of the Oolithe Blanche formation, which is often used as a proxy for transport properties 3,4,6 (Fig. 3).…”

Section: Influence Of Microporosity Distribution On the Permeabilitysupporting

confidence: 93%

“…The measured porosity, cement proportion and mean grain size are similar 6 for UP and RP samples (Table 1). Concerning the hydraulic radii, we can assume that the values should also be very close, looking at the small variability of the mean throat diameter except for sample BY11 which has a higher mean pore throat diameter and consistently a higher permeability ( Table 1).…”

Section: Influence Of Microporosity Distribution On the Permeabilitysupporting

confidence: 60%

“…The Oolithe Blanche formation being a microporous grainstone, the pore network connectivity and thus permeability depends on the distribution of microporosity within the grains (rimmed vs. uniform). 6 The difference in the ooids microtexture can be observed on pore-casts ( Fig. 4) obtained by dissolving on a surface the calcite matrix using HCl acid after injection of blue-dyed epoxy into the pore space: this technique reveals the three dimensional geometry of the pore space (in blue) for each sample.…”

Section: Resultsmentioning

confidence: 99%

“…This effect is clearly the reflection of two different microstructural attributes of the porous media, and can be related to the contrast in tortuosity when comparing UP and RP samples. 6 To estimate the tortuosity contrast for flow through our granular media, we use here a revised Kozeny-Carman equation proposed by Walsh and Brace 48 and Costa,49 where the permeability k is calculated from:…”

Section: Influence Of Microporosity Distribution On the Permeabilitymentioning

confidence: 99%

“…1 However, several studies concerning both type of exploitations showed that the Oolithe Blanche forms a complex carbonate reservoir presenting heterogeneous petrophysical and microstructural properties. [2][3][4][5][6] Many studies using P-wave velocities measurements have shown that dynamic moduli of carbonate rocks are controlled by several microstructural parameters such as rock fabric, pore type and shape, porosity and pore fluid, making it difficult to attribute changes in seismic expression to any one parameter. 3,4,[6][7][8][9][10][11][12][13][14][15] Elastic waves are, in essence, small mechanical perturbations and are therefore affected by the rock microstructure and rock deformation processes.…”

Section: Introductionmentioning

confidence: 99%

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Influence of microporosity distribution on the mechanical behavior of oolithic carbonate rocks

Regnet

David

Fortin

et al. 2015

Geomechanics for Energy and the Environment

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Section: Influence Of Microporosity Distribution On the Permeabilitysupporting

confidence: 93%

Section: Influence Of Microporosity Distribution On the Permeabilitysupporting

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Section: Influence Of Microporosity Distribution On the Permeabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of microporosity distribution on the mechanical behavior of oolithic carbonate rocks

Regnet

David

Fortin

et al. 2015

Geomechanics for Energy and the Environment

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Investigating the relative permeability behavior of microporosity‐rich carbonates and tight sandstones with multiscale pore network models

et al. 2016

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The relative permeability behavior of rocks with wide ranges of pore sizes is in many cases still poorly understood and is difficult to model at the pore scale. In this work, we investigate the capillary pressure and relative permeability behavior of three outcrop carbonates and two tight reservoir sandstones with wide, multimodal pore size distributions. To examine how the drainage and imbibition properties of these complex rock types are influenced by the connectivity of macropores to each other and to zones with unresolved small‐scale porosity, we apply a previously presented microcomputed‐tomography‐based multiscale pore network model to these samples. The sensitivity to the properties of the small‐scale porosity is studied by performing simulations with different artificial sphere‐packing‐based networks as a proxy for these pores. Finally, the mixed‐wet water‐flooding behavior of the samples is investigated, assuming different wettability distributions for the microporosity and macroporosity. While this work is not an attempt to perform predictive modeling, it seeks to qualitatively explain the behavior of the investigated samples and illustrates some of the most recent developments in multiscale pore network modeling.

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Seepage reflux dolomitization and telogenetic karstification in Majiagou Formation in the Ordos Basin, China

et al. 2018

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This study investigates the characteristics of the heterogeneous carbonate reservoir of Majiagou Formation in Jingxi area, Ordos Basin, China, to explain the diagenetic control and distribution of high‐quality reservoir intervals. The carbonates of the study area mainly consist of silt‐sized crystalline dolomite, microcrystalline dolomite, and microcrystalline limey dolomite. Both dolomite content and dolomite size gradually decrease both from top to bottom and from slope to basin. Intercrystalline pores exist in the silt‐sized crystalline dolomite, and vuggy pores and fractures mainly developed in microcrystalline (limey) dolomite. Furthermore, typical geopetal infills and three stages of calcite cements could be differentiated. Based on petrographical and geochemical analysis, the reservoir is dominantly controlled by seepage reflux dolomitization and telogenetic karstification. Four reservoir evolutions could be differentiated. The reservoir in the first model is dominated by intercrystal porosity occurring in silt‐sized crystalline dolostone. It experienced strong dolomitization, telogenetic karstification, and shallow as well as deep burial cementation. The reservoir in the second model consists of only a small amount of high‐angle dissolution fissures and vertical dissolution cavities in microcrystalline (limey) dolostone. It experienced relatively weak dolomitization, strong telogenetic karstification, and two important calcite cementation events. The reservoir in the third model is marked by many vuggy pores and dissolution fractures, occurring in microcrystalline (limey) dolostone. The strata experienced relatively weak dolomitization, strong telogenetic karstification, and two weak calcite cementation episodes. The reservoir in the fourth model is dominated by fractures and their related dissolution pores, which developed in microcrystalline (limey) dolostone. These dolostones experienced relatively weak dolomitization, telogenetic karstification, and calcite cementation. From a reservoir point of view, the reservoirs represented by the first and third models, which respectively are composed of silt‐sized crystalline dolomite occurring in the top of the whole dolostone succession and the dolomite affected by telogenetic karstification, are the most vital exploration targets.

show abstract

Impact of sedimentology and diagenesis on the petrophysical properties of a tight oolitic carbonate reservoir. The case of the Oolithe Blanche Formation (Bathonian, Paris Basin, France)

Cited by 45 publications

References 51 publications

Influence of microporosity distribution on the mechanical behavior of oolithic carbonate rocks

Influence of microporosity distribution on the mechanical behavior of oolithic carbonate rocks

Investigating the relative permeability behavior of microporosity‐rich carbonates and tight sandstones with multiscale pore network models

Seepage reflux dolomitization and telogenetic karstification in Majiagou Formation in the Ordos Basin, China

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