Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs

Mechanical rock properties are essential to minimize many well problems during drilling and production operations. While these properties are crucial in designing optimum mud weights during drilling operations, they are also necessary to reduce the sanding risk during production operations....

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Autor principal:	Mustafa Adil Issa
Formato:	article
Lenguaje:	EN
Publicado:	Union of Iraqi Geologists (UIG) 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/a0a51abf43fa41c0857b7a5fbbd4b5bb
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spelling	oai:doaj.org-article:a0a51abf43fa41c0857b7a5fbbd4b5bb2021-11-06T11:55:28ZEstimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs2414-60642663-875410.46717/igj.54.2D.10Ms-2021-10-29https://doaj.org/article/a0a51abf43fa41c0857b7a5fbbd4b5bb2021-10-01T00:00:00Zhttp://igj-iraq.org/igj/index.php/igj/article/view/746https://doaj.org/toc/2414-6064https://doaj.org/toc/2663-8754 Mechanical rock properties are essential to minimize many well problems during drilling and production operations. While these properties are crucial in designing optimum mud weights during drilling operations, they are also necessary to reduce the sanding risk during production operations. This study has been conducted on the Zubair sandstone reservoir, located in the south of Iraq. The primary purpose of this study is to develop a set of empirical correlations that can be used to estimate the mechanical rock properties of sandstone reservoirs. The correlations are established using laboratory (static) measurements and well logging (dynamic) data. The results support the evidence that porosity and sonic travel time are consistent indexes in determining the mechanical rock properties. Four correlations have been developed in this study which are static Young’s modulus, uniaxial compressive strength, internal friction angle, and static Poisson’s ratio with high performance capacity (determination coefficient of 0.79, 0.91, 0.73, and 0.78, respectively). Compared with previous correlations, the current local correlations are well-matched in determining the actual rock mechanical properties. Continuous profiles of borehole-rock mechanical properties of the upper sand unit are then constructed to predict the sand production risk. The ratio of shear modulus to bulk compressibility (G/Cb) as well as rock strength are being used as the threshold criterion to determine the sanding risks. The results showed that sanding risk or rock failure occurs when the rock strength is less than 7250 psi (50 MPa) and the ratio of G/Cb is less than 0.8*1012 psi2. This study presents a set of empirical correlations which are fewer effective costs for applications related to reservoir geomechanics.Mustafa Adil IssaUnion of Iraqi Geologists (UIG)articleGeologyQE1-996.5ENIraqi Geological Journal, Vol 54, Iss 2D, Pp 125-137 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 Mustafa Adil Issa Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs
description	Mechanical rock properties are essential to minimize many well problems during drilling and production operations. While these properties are crucial in designing optimum mud weights during drilling operations, they are also necessary to reduce the sanding risk during production operations. This study has been conducted on the Zubair sandstone reservoir, located in the south of Iraq. The primary purpose of this study is to develop a set of empirical correlations that can be used to estimate the mechanical rock properties of sandstone reservoirs. The correlations are established using laboratory (static) measurements and well logging (dynamic) data. The results support the evidence that porosity and sonic travel time are consistent indexes in determining the mechanical rock properties. Four correlations have been developed in this study which are static Young’s modulus, uniaxial compressive strength, internal friction angle, and static Poisson’s ratio with high performance capacity (determination coefficient of 0.79, 0.91, 0.73, and 0.78, respectively). Compared with previous correlations, the current local correlations are well-matched in determining the actual rock mechanical properties. Continuous profiles of borehole-rock mechanical properties of the upper sand unit are then constructed to predict the sand production risk. The ratio of shear modulus to bulk compressibility (G/Cb) as well as rock strength are being used as the threshold criterion to determine the sanding risks. The results showed that sanding risk or rock failure occurs when the rock strength is less than 7250 psi (50 MPa) and the ratio of G/Cb is less than 0.8*1012 psi2. This study presents a set of empirical correlations which are fewer effective costs for applications related to reservoir geomechanics.
format	article
author	Mustafa Adil Issa
author_facet	Mustafa Adil Issa
author_sort	Mustafa Adil Issa
title	Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs
title_short	Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs
title_full	Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs
title_fullStr	Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs
title_full_unstemmed	Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs
title_sort	estimation of mechanical rock properties from laboratory and wireline measurements for sandstone reservoirs
publisher	Union of Iraqi Geologists (UIG)
publishDate	2021
url	https://doaj.org/article/a0a51abf43fa41c0857b7a5fbbd4b5bb
work_keys_str_mv	AT mustafaadilissa estimationofmechanicalrockpropertiesfromlaboratoryandwirelinemeasurementsforsandstonereservoirs
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Estimation of Mechanical Rock Properties from Laboratory and Wireline Measurements for Sandstone Reservoirs

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