Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions

Understanding elastic properties of reservoir rocks is essential for seismic modeling under different saturation conditions as well as lithology discrimination. Experiments on elastic properties of limestones are significantly less published compared to siliciclastic sedimentary rocks. The current s...

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Autores principales:	Domagoj Vukadin, Jasna Orešković, Csaba Kutasi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	limestone reservoir ultrasonic velocity measurement elastic modulus Pannonian Basin Technology T
Acceso en línea:	https://doaj.org/article/a70bfe784a0b47f288a1fc92afda34a4
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spelling	oai:doaj.org-article:a70bfe784a0b47f288a1fc92afda34a42021-11-11T16:02:09ZElastic Properties of Pannonian Basin Limestone under Different Saturation Conditions10.3390/en142172911996-1073https://doaj.org/article/a70bfe784a0b47f288a1fc92afda34a42021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7291https://doaj.org/toc/1996-1073Understanding elastic properties of reservoir rocks is essential for seismic modeling under different saturation conditions as well as lithology discrimination. Experiments on elastic properties of limestones are significantly less published compared to siliciclastic sedimentary rocks. The current study presents the results of laboratory measurements on Pannonian Basin limestone cores. The research was carried out for the first time for a hydrocarbon reservoir in the Bjelovar Depression, located in the southern part of the Pannonian Basin. Ultrasonic velocity measurements and determination of dynamic elastic properties were performed on limestone plugs, in dry and saturated condition under different confining pressure steps. Based on the results obtained in laboratory conditions, an empirical relationship between shear wave velocity (<i>Vs</i>) and compressional wave velocity (<i>Vp</i>) has been defined. The saturated samples show an effect of shear modulus weakening, while three samples have a shear modulus strengthening effect. Two models were used in the interpretation of the measured data, the Kuster and Toksöz and the Xu-Payne model. The results show that the Xu-Payne model describes the data well and the dominant pore type system in the limestone samples can been identified. The interpretation revealed an interparticle pore system with a fraction of microcracks from 20% to 35%. The results have helped to understand the elastic properties of limestones from the southern part of the Pannonian Basin, which are necessary for any process of reservoir characterization, such as porosity distribution and permeability variation.Domagoj VukadinJasna OreškovićCsaba KutasiMDPI AGarticlelimestone reservoirultrasonic velocity measurementelastic modulusPannonian BasinTechnologyTENEnergies, Vol 14, Iss 7291, p 7291 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	limestone reservoir ultrasonic velocity measurement elastic modulus Pannonian Basin Technology T
spellingShingle	limestone reservoir ultrasonic velocity measurement elastic modulus Pannonian Basin Technology T Domagoj Vukadin Jasna Orešković Csaba Kutasi Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions
description	Understanding elastic properties of reservoir rocks is essential for seismic modeling under different saturation conditions as well as lithology discrimination. Experiments on elastic properties of limestones are significantly less published compared to siliciclastic sedimentary rocks. The current study presents the results of laboratory measurements on Pannonian Basin limestone cores. The research was carried out for the first time for a hydrocarbon reservoir in the Bjelovar Depression, located in the southern part of the Pannonian Basin. Ultrasonic velocity measurements and determination of dynamic elastic properties were performed on limestone plugs, in dry and saturated condition under different confining pressure steps. Based on the results obtained in laboratory conditions, an empirical relationship between shear wave velocity (<i>Vs</i>) and compressional wave velocity (<i>Vp</i>) has been defined. The saturated samples show an effect of shear modulus weakening, while three samples have a shear modulus strengthening effect. Two models were used in the interpretation of the measured data, the Kuster and Toksöz and the Xu-Payne model. The results show that the Xu-Payne model describes the data well and the dominant pore type system in the limestone samples can been identified. The interpretation revealed an interparticle pore system with a fraction of microcracks from 20% to 35%. The results have helped to understand the elastic properties of limestones from the southern part of the Pannonian Basin, which are necessary for any process of reservoir characterization, such as porosity distribution and permeability variation.
format	article
author	Domagoj Vukadin Jasna Orešković Csaba Kutasi
author_facet	Domagoj Vukadin Jasna Orešković Csaba Kutasi
author_sort	Domagoj Vukadin
title	Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions
title_short	Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions
title_full	Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions
title_fullStr	Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions
title_full_unstemmed	Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions
title_sort	elastic properties of pannonian basin limestone under different saturation conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a70bfe784a0b47f288a1fc92afda34a4
work_keys_str_mv	AT domagojvukadin elasticpropertiesofpannonianbasinlimestoneunderdifferentsaturationconditions AT jasnaoreskovic elasticpropertiesofpannonianbasinlimestoneunderdifferentsaturationconditions AT csabakutasi elasticpropertiesofpannonianbasinlimestoneunderdifferentsaturationconditions
_version_	1718432432868294656

Elastic Properties of Pannonian Basin Limestone under Different Saturation Conditions

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