A probabilistic model for the formation of crack networks in rocks under CO2 injection

Seyedi, M.; Mushtaq, Arslan; Hild, F.

doi:10.1201/9781439833469.ch13

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Probabilistic Model For Crack Initiations and Interactions1

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2011

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“…A probabilistic model that takes into account the rock heterogeneity is introduced to describe crack initiation in the caprock under gas injection conditions (Seyedi and Hild 2007).…”

Section: Probabilistic Model For Crack Initiations and Interactionsmentioning

confidence: 99%

Hydro-mechanical modelling of geological CO₂storage and the study of possible caprock fracture mechanisms

Guy¹,

Seyedi²,

Hild³

2011

Georisk: Assessment and Management of Risk for Engineered Syste

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The present study discusses the results of a large scale finite element modelling of a hypothetical underground carbon dioxide (CO 2 ) storage operation. The hydro-mechanical properties of the materials modelled are chosen to be representative of a potential injection site. For high injection rates, local effective stress modifications may lead to various fracture mechanisms induced by shear or tensile stresses depending on the initial conditions. The results show the influence of the initial stress state on the possible fracture mechanisms. Sustainable injection rate maps are introduced that provide a first order estimate depending on initial stress states. The case of rock fracturing due to tensile stresses is treated. The stress intensity factor is used as the driving parameter describing the growth of initial vertical cracks. A probabilistic model based on rock heterogeneity is used to evaluate the probability of the formation and propagation of crack networks. The results show that a crack network can be generated. This crack network saturates quickly after the first crack activations.

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“…A probabilistic model that takes into account the rock heterogeneity is introduced to describe crack initiation in the caprock under gas injection conditions (Seyedi and Hild 2007).…”

Section: Probabilistic Model For Crack Initiations and Interactionsmentioning

confidence: 99%

Hydro-mechanical modelling of geological CO₂storage and the study of possible caprock fracture mechanisms

Guy¹,

Seyedi²,

Hild³

2011

Georisk: Assessment and Management of Risk for Engineered Syste

View full text Add to dashboard Cite

show abstract

A probabilistic model for the formation of crack networks in rocks under CO2 injection

Cited by 1 publication

References 1 publication

Hydro-mechanical modelling of geological CO₂storage and the study of possible caprock fracture mechanisms

Hydro-mechanical modelling of geological CO₂storage and the study of possible caprock fracture mechanisms

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A probabilistic model for the formation of crack networks in rocks under CO2 injection

Cited by 1 publication

References 1 publication

Hydro-mechanical modelling of geological CO2storage and the study of possible caprock fracture mechanisms

Hydro-mechanical modelling of geological CO2storage and the study of possible caprock fracture mechanisms

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Product

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Hydro-mechanical modelling of geological CO₂storage and the study of possible caprock fracture mechanisms

Hydro-mechanical modelling of geological CO₂storage and the study of possible caprock fracture mechanisms