A review of variability of the effective mineral's elastic moduli in sandstones

H. Amini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Understanding the bulk and shear moduli of the background material (?_0, µ_0) from which the rock frame is built is crucial in rock physic models with a direct impact on rock frame modelling and Gassmann fluid substitution. Here, I describe different components of the background material and explain why the terms grain, matrix, solid or mineral do not solely represent ?_0 and µ_0 accurately. I explored the literature to gain a data-driven insight into variability of the elastic properties of the non-clay fraction of the sandstones, where quartz's elastic properties are typically used for. The results from unjacketed bulk compressibility measurements, along with two other empirical methods indicate the range of ?_0 and µ_0 vary over a rather large interval. It is shown that the effective medium theories - even using a detailed mineralogical description of the rock aggregate - do not guarantee an accurate estimation of ?_0 (and probably µ_0). It was also found that the quartz elastic properties, in particular its shear modulus, do not appear to be suitable for characterisation of the for non-clay fraction of the sandstones. Alternatively, unjacketed bulk compressibility measurements, or curve fitting is recommended for estimation of these parameters.

Original languageEnglish
Title of host publication81st EAGE Conference and Exhibition 2019
PublisherEAGE Publishing BV
ISBN (Electronic)9789462822894
Publication statusPublished - 3 Jun 2019
Event81st EAGE Conference and Exhibition 2019 - London, United Kingdom
Duration: 3 Jun 20196 Jun 2019

Conference

Conference81st EAGE Conference and Exhibition 2019
CountryUnited Kingdom
CityLondon
Period3/06/196/06/19

Fingerprint

elastic modulus
sandstones
Sandstone
Minerals
modulus of elasticity
elastic property
Elastic moduli
Rocks
minerals
sandstone
rocks
Quartz
elastic properties
shear modulus
mineral
compressibility
Compressibility
rock
quartz
shear

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Amini, H. (2019). A review of variability of the effective mineral's elastic moduli in sandstones. In 81st EAGE Conference and Exhibition 2019 EAGE Publishing BV.
Amini, H. / A review of variability of the effective mineral's elastic moduli in sandstones. 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 2019.
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Amini, H 2019, A review of variability of the effective mineral's elastic moduli in sandstones. in 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 81st EAGE Conference and Exhibition 2019, London, United Kingdom, 3/06/19.

A review of variability of the effective mineral's elastic moduli in sandstones. / Amini, H.

81st EAGE Conference and Exhibition 2019. EAGE Publishing BV, 2019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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M3 - Conference contribution

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Amini H. A review of variability of the effective mineral's elastic moduli in sandstones. In 81st EAGE Conference and Exhibition 2019. EAGE Publishing BV. 2019