Published March 15, 2023 | Version v1
Conference paper Open

Australia-wide downhole DAS array for observational seismology

  • 1. Curtin University, R.Pevzner@curtin.edu.au
  • 2. Curtin University, K.Tertyshnikov@curtin.edu.au
  • 3. Curtin University, Sinem.Yavuz@curtin.edu.au
  • 4. Curtin University, Pavel.Shashkin@curtin.edu.au
  • 5. CSIRO, Valeriya.Shulakova@csiro.au
  • 6. Curtin University, B.Gurevich@curtin.edu.au

Description

Downhole seismic acquired with distributed acoustic sensors (DAS) provides a unique opportunity to record genuinely broadband data with a frequency range varying from sub-milli-Hertz to several kilo-Hertz. As such, downhole DAS is used to detect and track local microearthquakes caused by fluid injection into a reservoir, analyse natural seismicity or look at lower frequency signals like oceanic microseisms. In most cases, the published studies deal with local single-well installations or multi-well installations with the wells located within first kilometres of each other. In the last two years (2020-2022) we acquired continuous DAS data in three different locations across Australia, namely Otway International Test Centre, Victoria, NGL training well at Curtin Campus in Perth and Harvey-3 well, located 120 km south of Perth in Western Australia. In this presentation, we discuss the outcomes of this trial.

Notes

Open-Access Online Publication: May 29, 2023

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