Hydraulic properties of injection formations constrained by surface deformation

Manoochehr Shirzaei, Michael Manga, Guang Zhai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Wastewater injection over the past decade has increased seismicity in the central USA, in some cases accompanied by detectable surface uplift. Here, we use this uplift to constrain subsurface properties and pore pressure evolution. We apply an advanced multitemporal interferometric algorithm to 35 synthetic aperture radar images acquired by ALOS satellite over four years before the 2012 earthquake sequence in east Texas, where large volumes of wastewater are disposed at depths of ∼800 m and ∼1800 m. To solve for the hydraulic diffusivity of the injection layers, we jointly inverted the injected volume and uplift data, considering a poroelastic layered half space. We find diffusivity values of 0.3±0.1 m 2 /s and 0.7±0.15 m 2 /s for shallow and deep injection layers, respectively, which combined with seismically-derived bulk moduli yields permeability values of 5.5±2.6×10 −14 m 2 and 1.9±0.25×10 −13 m 2 for these layers, consistent with permeability range reported for Rodessa formation and well test values. Hydraulic conductivity determines the evolution of pore pressure and thus the origin and location of induced seismicity. This study highlights the value of geodetic observations to constrain key hydrogeological properties of injection layers and to monitor the evolution of the subsurface pressure change.

Original languageEnglish (US)
Pages (from-to)125-134
Number of pages10
JournalEarth and Planetary Science Letters
Volume515
DOIs
StatePublished - Jun 1 2019

Fingerprint

Pore pressure
hydraulic property
hydraulics
Wastewater
Hydraulics
injection
uplift
Hydraulic conductivity
Synthetic aperture radar
pore pressure
diffusivity
Earthquakes
permeability
Elastic moduli
Satellites
porosity
wastewater
induced seismicity
ALOS
bulk modulus

Keywords

  • estimating hydraulic diffusivity
  • injection induced seismicity
  • InSAR time series
  • poroelastic model inversion

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

Hydraulic properties of injection formations constrained by surface deformation. / Shirzaei, Manoochehr; Manga, Michael; Zhai, Guang.

In: Earth and Planetary Science Letters, Vol. 515, 01.06.2019, p. 125-134.

Research output: Contribution to journalArticle

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AU - Zhai, Guang

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AB - Wastewater injection over the past decade has increased seismicity in the central USA, in some cases accompanied by detectable surface uplift. Here, we use this uplift to constrain subsurface properties and pore pressure evolution. We apply an advanced multitemporal interferometric algorithm to 35 synthetic aperture radar images acquired by ALOS satellite over four years before the 2012 earthquake sequence in east Texas, where large volumes of wastewater are disposed at depths of ∼800 m and ∼1800 m. To solve for the hydraulic diffusivity of the injection layers, we jointly inverted the injected volume and uplift data, considering a poroelastic layered half space. We find diffusivity values of 0.3±0.1 m 2 /s and 0.7±0.15 m 2 /s for shallow and deep injection layers, respectively, which combined with seismically-derived bulk moduli yields permeability values of 5.5±2.6×10 −14 m 2 and 1.9±0.25×10 −13 m 2 for these layers, consistent with permeability range reported for Rodessa formation and well test values. Hydraulic conductivity determines the evolution of pore pressure and thus the origin and location of induced seismicity. This study highlights the value of geodetic observations to constrain key hydrogeological properties of injection layers and to monitor the evolution of the subsurface pressure change.

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