A Geomechanical Model for Gas Hydrate Bearing Sediments Incorporating High Dilatancy, Temperature, and Rate Effects

Bohan Zhou; Marcelo Sanchez; Luciano Oldecop; Carlos Santamarina

doi:10.3390/en15124280

A Geomechanical Model for Gas Hydrate Bearing Sediments Incorporating High Dilatancy, Temperature, and Rate Effects

Bohan Zhou, Marcelo Sanchez, Luciano Oldecop, Carlos Santamarina

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The geomechanical behavior of methane hydrate bearing sediments (MHBS) is influenced by many factors, including temperature, fluid pressure, hydrate saturation, stress level, and strain rate. The paper presents a visco-elastoplastic constitutive model for MHBS based on an elastoplastic model that incorporates the effect of hydrate saturation, stress history, and hydrate morphology on hydrate sediment response. The upgraded model is able to account for additional critical features of MHBS behavior, such as, high-dilatancy, temperature, and rate effects. The main components and the mathematical formulation of the new constitutive model are described in detail. The upgraded model is validated using published triaxial tests involving MHBS. The model agrees overly well with the experimental observations and is able to capture the main features associated with the behavior of MHBS.

Original language	English (US)
Pages (from-to)	4280
Journal	Energies
Volume	15
Issue number	12
DOIs	https://doi.org/10.3390/en15124280
State	Published - Jun 10 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-06-13
Acknowledgements: We acknowledge the financial support from NETL (National Energy Technology Laboratory, DOE, USA, through Award No.: DE-FE0013889.
The authors thank Xuerui Gai for technical assistance and useful discussion.

ASJC Scopus subject areas

General Computer Science

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10.3390/en15124280

https://repository.kaust.edu.sa/bitstream/10754/678894/1/energies-15-04280.pdf

Cite this

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title = "A Geomechanical Model for Gas Hydrate Bearing Sediments Incorporating High Dilatancy, Temperature, and Rate Effects",

abstract = "The geomechanical behavior of methane hydrate bearing sediments (MHBS) is influenced by many factors, including temperature, fluid pressure, hydrate saturation, stress level, and strain rate. The paper presents a visco-elastoplastic constitutive model for MHBS based on an elastoplastic model that incorporates the effect of hydrate saturation, stress history, and hydrate morphology on hydrate sediment response. The upgraded model is able to account for additional critical features of MHBS behavior, such as, high-dilatancy, temperature, and rate effects. The main components and the mathematical formulation of the new constitutive model are described in detail. The upgraded model is validated using published triaxial tests involving MHBS. The model agrees overly well with the experimental observations and is able to capture the main features associated with the behavior of MHBS.",

author = "Bohan Zhou and Marcelo Sanchez and Luciano Oldecop and Carlos Santamarina",

note = "KAUST Repository Item: Exported on 2022-06-13 Acknowledgements: We acknowledge the financial support from NETL (National Energy Technology Laboratory, DOE, USA, through Award No.: DE-FE0013889. The authors thank Xuerui Gai for technical assistance and useful discussion.",

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AU - Zhou, Bohan

AU - Sanchez, Marcelo

AU - Oldecop, Luciano

AU - Santamarina, Carlos

N1 - KAUST Repository Item: Exported on 2022-06-13 Acknowledgements: We acknowledge the financial support from NETL (National Energy Technology Laboratory, DOE, USA, through Award No.: DE-FE0013889. The authors thank Xuerui Gai for technical assistance and useful discussion.

PY - 2022/6/10

Y1 - 2022/6/10

N2 - The geomechanical behavior of methane hydrate bearing sediments (MHBS) is influenced by many factors, including temperature, fluid pressure, hydrate saturation, stress level, and strain rate. The paper presents a visco-elastoplastic constitutive model for MHBS based on an elastoplastic model that incorporates the effect of hydrate saturation, stress history, and hydrate morphology on hydrate sediment response. The upgraded model is able to account for additional critical features of MHBS behavior, such as, high-dilatancy, temperature, and rate effects. The main components and the mathematical formulation of the new constitutive model are described in detail. The upgraded model is validated using published triaxial tests involving MHBS. The model agrees overly well with the experimental observations and is able to capture the main features associated with the behavior of MHBS.

AB - The geomechanical behavior of methane hydrate bearing sediments (MHBS) is influenced by many factors, including temperature, fluid pressure, hydrate saturation, stress level, and strain rate. The paper presents a visco-elastoplastic constitutive model for MHBS based on an elastoplastic model that incorporates the effect of hydrate saturation, stress history, and hydrate morphology on hydrate sediment response. The upgraded model is able to account for additional critical features of MHBS behavior, such as, high-dilatancy, temperature, and rate effects. The main components and the mathematical formulation of the new constitutive model are described in detail. The upgraded model is validated using published triaxial tests involving MHBS. The model agrees overly well with the experimental observations and is able to capture the main features associated with the behavior of MHBS.

UR - http://hdl.handle.net/10754/678894

UR - https://www.mdpi.com/1996-1073/15/12/4280

U2 - 10.3390/en15124280

DO - 10.3390/en15124280

M3 - Article

SN - 1996-1073

VL - 15

SP - 4280

JO - Energies

JF - Energies

IS - 12

ER -

A Geomechanical Model for Gas Hydrate Bearing Sediments Incorporating High Dilatancy, Temperature, and Rate Effects

Abstract

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