Heterogeneities and diagenetic control on the spatial distribution of carbonate rocks acoustic properties at the outcrop scale

Matonti, C.; Guglielmi, Yves; Viseur, Sophie; Bruna, Pierre Olivier; Borgomano, Jean; Dahl, C. Rambech; Marié, Lionel

doi:10.1016/j.tecto.2014.10.020

Cited by 45 publications

(36 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Porosity, fabrics and pore types being the main contrai factors of elastic velocity in carbonate rocks (Eberli et al, 2003;Baechle et al, 2008;Verwer et al, 2008), it seems natural to seek to link elastic properties and diagenesis. However, only a few studies tackle the key issue of relating sedimentological and diagenetic features to physical properties measured at the sample scale and extrapolating the obtained results at the formation scale to derive global evolution laws (Brigaud, 201 O;Regnet et al, 2015aRegnet et al, , 2015bMatonti et al, 2015Matonti et al, , 2016. Numerous acoustic of 0.02) to the reference pores.…”

Section: Introductionmentioning

confidence: 99%

Effective medium modeling of diagenesis impact on the petroacoustic properties of carbonate rocks

et al. 2019

View full text Add to dashboard Cite

1Carbonate formations are heterogeneous and their velocity -porosity relationships are mainly controlled by microstructural parameters. As diagenesis is responsible for important changes in the microstructure of carbonate rocks, we propose here to extend the classic effective medium approach to mode! the impact of diagenesis on carbonate elastic properties through a step by step effective medium modeling. Two different carbonate formations are considered. The first key step is the characterization of the diagenesis which affected the studied carbonate series.An effective medium mode! integrating ail the geological information accessible from thin section analysis is then built. The evolution of the micro structural parameters during diagenesis is thoroughly constrained based on an extensive experimental dataset, including XRD analysis, various porosimetry techniques and ultrasonic velocities measurements. Finally, direct calculations with the mode! provide elastic wave velocities representative of the different diagenetic stages. An extrapolation to permeability evolution is also introduced. This approach allows the identification of the acoustic signature of specific diagenetic events, such as dolomitization, dissolution or cementation, and the assessment of their impact on the flow properties of carbonate formations.

show abstract

Section: Introductionmentioning

confidence: 99%

Effective medium modeling of diagenesis impact on the petroacoustic properties of carbonate rocks

et al. 2019

View full text Add to dashboard Cite

show abstract

“…pluri-metric at seismic). According to Matonti et al (2015), the direct comparison of P-wave velocities acquired on carbonates at two different scales (plug versus outcrop) highlights a decrease of the P-wave velocity with scale. These authors pointed out here a "scale effect" that they partly attribute to the presence of structural features (fractures).…”

Section: This Equality Of Dry Elastic Moduli At All Frequencies Is Onmentioning

confidence: 99%

Upscaling of elastic properties in carbonates: A modeling approach based on a multiscale geophysical data set

Fortin¹,

Bailly

Adelinet

et al. 2020

Preprint

View full text Add to dashboard Cite

<p>Linking ultrasonic measurements made on samples, with sonic logs and seismic subsurface data, is a key challenge for the understanding of carbonate reservoirs. To deal with this problem, we investigate the elastic properties of dry lacustrine carbonates. At one study site, we perform a seismic refraction survey (100 Hz), as well as sonic (54 kHz) and ultrasonic (250 kHz) measurements directly on outcrop and ultrasonic measurements on samples (500 kHz). By comparing the median of each data set, we show that the P wave velocity decreases from laboratory to seismic scale. Nevertheless, the median of the sonic measurements acquired on outcrop surfaces seems to fit with the seismic data, meaning that sonic acquisition may be representative of seismic scale. To explain the variations due to upscaling, we relate the concept of representative elementary volume with the wavelength of each scale of study. Indeed, with upscaling, the wavelength varies from millimetric to pluri-metric. This change of scale allows us to conclude that the behavior of P wave velocity is due to different geological features (matrix porosity, cracks, and fractures) related to the different wavelengths used. Based on effective medium theory, we quantify the pore aspect ratio at sample scale and the crack/fracture density at outcrop and seismic scales using a multiscale representative elementary volume concept. Results show that the matrix porosity that controls the ultrasonic P wave velocities is progressively lost with upscaling, implying that crack and fracture porosity impacts sonic and seismic P wave velocities, a result of paramount importance for seismic interpretation based on deterministic approaches.</p><p>Bailly, C., Fortin, J., Adelinet, M., & Hamon, Y. (2019). Upscaling of elastic properties in carbonates: A modeling approach based on a multiscale geophysical data set. Journal of Geophysical Research: Solid Earth, 124. https://doi.org/10.1029/2019JB018391</p>

show abstract

“…Carbonate reservoirs are of great importance for hydrocarbon exploration and exploitation, from which more than 50% of oil and gas are produced globally (Jia et al, 2016). However, carbonate reservoirs are in most cases inherently heterogeneous (e.g., Heasley, Worden, & Hendry, 2000;Hollis et al, 2010;Makhloufi et al, 2013;Matonti et al, 2015;Wang & Al-Aasm, 2002). Marine carbonate reservoir quality is affected by initial depositional patterns and subsequent diagenetic alterations (e.g., Amel, Jafarian, Husinec, Koeshidayatullah, & Swennen, 2015;Beigi et al, 2017;Vincent, Emmanuel, Houel, & Loreau, 2007).…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

View full text Add to dashboard Cite

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

Heterogeneities and diagenetic control on the spatial distribution of carbonate rocks acoustic properties at the outcrop scale

Cited by 45 publications

References 62 publications

Effective medium modeling of diagenesis impact on the petroacoustic properties of carbonate rocks

Effective medium modeling of diagenesis impact on the petroacoustic properties of carbonate rocks

Upscaling of elastic properties in carbonates: A modeling approach based on a multiscale geophysical data set

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

Contact Info

Product

Resources

About