Effects of carnallite content on mechanical properties of Maha Sarakham rock salt

Luangthip, Amornrat; Wilalak, Naphaphat; Thongprapha, Thanittha; Fuenkajorn, Kittitep

doi:10.1007/s12517-017-2945-9

Cited by 12 publications

(9 citation statements)

References 15 publications

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“… Note : Anhydrite and carbonate values from Gudmundsson (2012), halite values from Jackson and Hudec (2017) and carnallite values from Luangthip et al (2017). …”

Section: Introductionmentioning

confidence: 99%

Characterising the internal structural complexity of the Southern North Sea Zechstein Supergroup Evaporites

2023

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The internal structure and architecture of evaporite sequences is often overlooked, with attention frequently concentrating on the external geometries that salt bodies form. The availability of extensive 3D seismic data affords the opportunity to interpret the internal structures within these evaporite sequences and comprehensively characterise the different structural facies over large areas. This paper concentrates on the Zechstein Supergroup evaporite deposits within the Southern North Sea of the United Kingdom's Continental Shelf. This analysis of the internal structural complexity and stratigraphic heterogeneity utilises 26,000 km2 of 3D seismic data together with over 96 wells from the Southern North Sea. Characterisation of the different structural facies present was undertaken alongside mapping their spatial distribution to understand the relationship they have with one another and the structural evolution that may have been taken. This work has (1) characterised and mapped six different internal structural facies present within the Zechstein with increasing levels of deformation; (2) shown the internal lithological heterogeneity is indicative of variations in the vertical strength profile of layered evaporite sequences; (3) discontinuous high‐amplitude reflections within the Zechstein are as a result of the geometries being too steeply dipping for the seismic data to image; and (4) the ability to possibly predict the internal heterogeneity of areas of poorly imaged salt, such as within large diapiric salt structures, from surrounding structural facies. These findings suggest that there is significant internal complexity even within areas of the basin with minor mobilisation to the external salt geometry.

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“… Note : Anhydrite and carbonate values from Gudmundsson (2012), halite values from Jackson and Hudec (2017) and carnallite values from Luangthip et al (2017). …”

Section: Introductionmentioning

confidence: 99%

Characterising the internal structural complexity of the Southern North Sea Zechstein Supergroup Evaporites

2023

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“…(Li et al 2018;Liu et al 2014). Few experimental researchers have attempted to study the impact of heterogeneity in the composition of the rock salt (Luangthip et al 2017;. However very few researchers have studied the impact of heterogeneity in simulations.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Behavior of Salt X

Bresser¹,

Drury²,

Fokker³

et al. 2022

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Cover illustration: Microstructure of naturally deformed rock salt from the Avery Island salt dome, Louisiana, U.S.A. (images contributed by C.J. Spiers).The gold-colored image (long-side scale ~0.8 mm) is a �� light micrograph of a polished and etched section showing the internal subgrain structure within a single salt grain in the rock. The subgrains plus ��= stress vs. subgrain size relations for salt indicate that deformation involved a component of dislocation creep at a deviatoric stress around 1 MPa.The blue image (long-side scale 3 mm) is a transmitted light micrograph of a thin section of Avery Island salt that was g-irradiated to reveal the internal microstructure through radiation damage (precipitation of sodium nano-particles). The section shows evidence for both subgrains and asymmetric crystal overgrowth features (clear zones), suggesting that deformation involved not only dislocation creep but also dissolution-precipitation processes, such as grain boundary migration and/or pressure solution.All papers published in this volume were peer-reviewed before publication. Original papers and original reviews of previous work were accepted. The Organizing Committee is not responsible for the statements made or for the opinions expressed in this volume.

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“… 35 , 65 , 69 . Few experimental researchers have attempted to study the impact of heterogeneity in the composition of rock salt 19 , 65 , 68 , 70 . However, very few researchers have tried to study the impact of heterogeneity by considering elastic and creep properties of interlayers in the domain 19 .…”

Section: Introductionmentioning

confidence: 99%

Geomechanical simulation of energy storage in salt formations

Kumar

Makhmutov

Spiers

et al. 2021

Sci Rep

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A promising option for storing large-scale quantities of green gases (e.g., hydrogen) is in subsurface rock salt caverns. The mechanical performance of salt caverns utilized for long-term subsurface energy storage plays a significant role in long-term stability and serviceability. However, rock salt undergoes non-linear creep deformation due to long-term loading caused by subsurface storage. Salt caverns have complex geometries and the geological domain surrounding salt caverns has a vast amount of material heterogeneity. To safely store gases in caverns, a thorough analysis of the geological domain becomes crucial. To date, few studies have attempted to analyze the influence of geometrical and material heterogeneity on the state of stress in salt caverns subjected to long-term loading. In this work, we present a rigorous and systematic modeling study to quantify the impact of heterogeneity on the deformation of salt caverns and quantify the state of stress around the caverns. A 2D finite element simulator was developed to consistently account for the non-linear creep deformation and also to model tertiary creep. The computational scheme was benchmarked with the already existing experimental study. The impact of cyclic loading on the cavern was studied considering maximum and minimum pressure that depends on lithostatic pressure. The influence of geometric heterogeneity such as irregularly-shaped caverns and material heterogeneity, which involves different elastic and creep properties of the different materials in the geological domain, is rigorously studied and quantified. Moreover, multi-cavern simulations are conducted to investigate the influence of a cavern on the adjacent caverns. An elaborate sensitivity analysis of parameters involved with creep and damage constitutive laws is performed to understand the influence of creep and damage on deformation and stress evolution around the salt cavern configurations. The simulator developed in this work is publicly available at https://gitlab.tudelft.nl/ADMIRE_Public/Salt_Cavern.

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Effects of carnallite content on mechanical properties of Maha Sarakham rock salt

Cited by 12 publications

References 15 publications

Characterising the internal structural complexity of the Southern North Sea Zechstein Supergroup Evaporites

Characterising the internal structural complexity of the Southern North Sea Zechstein Supergroup Evaporites

The Mechanical Behavior of Salt X

Geomechanical simulation of energy storage in salt formations

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