Pore-scale modelling of elastic properties in hydrate-bearing sediments using 4-D synchrotron radiation imaging

Rui Li, Yingfang Zhou* (Corresponding Author), Wenbo Zhan, Jianhui Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Downloads (Pure)


Gas hydrate contains abundant methane gas, which is considered to be a promising energy resource to mitigate the influence of climate change in the future. Understanding the effect of fluids-solid-hydrate spatial distribution on elastic properties of hydrate-bearing sediments benefits the well-log interpretation. We constructed 4-D hydrate-bearing models covering a wide hydrate saturation range based on high-resolution digital images obtained by Synchrotron Radiation X-Rays Computed Tomography (SRXCT). We analysed the elastic moduli and elastic wave velocities of these models by the static Finite Element Method (FEM). The results demonstrated that the dominant hydrate
morphology transits from pore-filling to load-bearing when hydrate saturation increases. At low hydrate saturations, the hydrate formed around some gas bubbles blocks local pore space. Therefore a great enhancement in compressional wave velocity was observed at low hydrate saturations. While the shear wave velocity was less affected due to the presence of thin water films. Based on the simulated results, an empirical model was developed to compute the compressional and shear wave velocities considering the free gas phase. The comparison with some experimental measurements validated the applicability of the model.
Original languageEnglish
Article number105864
Number of pages15
JournalMarine and Petroleum Geology
Early online date2 Sept 2022
Publication statusPublished - Nov 2022

Bibliographical note

The financial support for this study was from PetroChina. We also thank S. K. Sahoo for sharing the high resolution 4D synchrotron radiation imaging data of hydrate formation.

Data Availability Statement

Data will be made available on request.


  • Hydrate-bearing sediments
  • Elastic moduli
  • Elastic wave velocity
  • Pore-scale modelling
  • 4-D hydrate morphology


Dive into the research topics of 'Pore-scale modelling of elastic properties in hydrate-bearing sediments using 4-D synchrotron radiation imaging'. Together they form a unique fingerprint.

Cite this