lAnalyse d'une fuite par faille de l'installation de stockage souterrain de gaz natlurel de Leroy, Wyoming, USA

Translated title of the contribution: Analysis of fault leakage from Leroy underground natural gas storage facility, Wyoming, USA

Mingjie Chen*, Thomas A. Buscheck, Jeffrey L. Wagoner, Yunwei Sun, Joshua A. White, Laura Chiaramonte, Roger D. Aines

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Leroy natural-gas storage site is an anticlinal, fault-bounded, aquifer-storage system located in Wyoming, USA. Based on its abundant data, uncontrolled leakage history and subsequent control by the facility operators, a modeling framework was developed for studying reservoir behavior, examining pressure and gas-inventory histories, as well as gas and brine leakage, and evaluating the sensitivity of that behavior to uncertainty about reservoir properties. A three-dimensional model capturing the bounding fault, layered geologic stratigraphy, and surface topography was calibrated by history data of reservoir pressure and gas inventory. The calibrated model predicted gas arrival at the ground surface that was consistent with the timing of observed gas bubbling into a creek. A global sensitivity analysis was performed to examine the parameters influencing fault leakage, and a geomechanical stability analysis was conducted to investigate the likelihood of fault reactivation. In general, it is shown that a discrete leakage pathway is required to explain the observed gas leakage and its subsequent operational control by reducing reservoir pressures. Specifically, the results indicate that fault leakage is a plausible explanation for the observed gas leakage. The results are relevant to other natural-gas storage sites, as well as other subsurface storage applications of buoyant fluids, such as CO2.

Translated title of the contributionAnalysis of fault leakage from Leroy underground natural gas storage facility, Wyoming, USA
Original languageFrench
Pages (from-to)1429-1445
Number of pages17
JournalHydrogeology Journal
Issue number7
Publication statusPublished - Nov 2013
Externally publishedYes


  • Fault
  • Gas leakage
  • Natural gas
  • USA
  • Underground storage

ASJC Scopus subject areas

  • Water Science and Technology
  • Earth and Planetary Sciences (miscellaneous)


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