• Carbon Dioxide Saturation Estimates at Sleipner Using Seismic Imaging and Rock Physics Inversion 

      Dupuy, Bastien; Romdhane, Anouar; Eliasson, Peder; Yan, Hong; Torres Caceres, Veronica Alejandra; Querendez, Etor; Ghaderi, Amir (Chapter; Peer reviewed, 2017)
      We present an integrated approach combining Full-Waveform Inversion and rock physics inversion to estimate CO2 saturation at Sleipner. Acoustic FWI provides high-resolution P-wave velocity images where the uncertainty is ...
    • CO2 saturation estimates at Sleipner (North Sea) from seismic tomography and rock physics inversion 

      Yan, Hong; Dupuy, Bastien; Romdhane, Mohamed Anouar; Arntsen, Børge (Journal article; Peer reviewed, 2018)
      CO2 saturations are estimated at Sleipner using a two‐step imaging workflow. The workflow combines seismic tomography (full‐waveform inversion) and rock physics inversion and is applied to a two‐dimensional seismic line ...
    • Combined geophysical and rock physics workflow for quantitative CO2 monitoring 

      Dupuy, Bastien; Romdhane, Anouar; Eliasson, Peder; Yan, Hong (Peer reviewed; Journal article, 2021)
      Safe CO2 storage requires conformance verification, i.e. confirmation that the pressure and CO2 accumulation are consistent with modelling forecasts within a given uncertainty range. Quantitative estimates of relevant ...
    • Effect of non-linear elasticity on stress paths in depleted reservoirs and their surroundings 

      Lozovyi, Serhii; Yan, Hong; Holt, Rune Martin; Bakk, Audun (Chapter, 2020)
      The prediction of stress and strain changes in and around reservoir using numerical simulators is often based on assumption of linear elasticity before reaching yield point. However, it is known that rocks are generally ...
    • Quantitative seismic characterisation of CO2 at the Sleipner storage site, North Sea 

      Dupuy, Bastien; Romdhane, Anouar; Eliasson, Peder; Querendez, Etor; Yan, Hong; Torres Caceres, Veronica Alejandra; Ghaderi, Amir (Journal article; Peer reviewed, 2017)
      Reliable quantification of carbon dioxide (CO2CO2) properties and saturation is crucial in the monitoring of CO2CO2 underground storage projects. We have focused on quantitative seismic characterization of CO2CO2 at the ...
    • Rock physics inversion for CO2 characterization at Sleipner 

      Yan, Hong (Master thesis, 2017)
      We combine Full-Waveform Inversion (FWI) and rock physics inversion to provide quantitative estimates of CO2 saturation at Sleipner. The rock physics tool is based on uniform saturation and patchy saturation rock physics ...
    • Rock Physics Inversion for CO2 Saturation Estimation at Sleipner - Sensitivity Tests and Baseline Application 

      Yan, Hong; Dupuy, Bastien; Romdhane, Anouar; Arntsen, Børge (Chapter, 2017)
      We demonstrate the use of rock physics inversion for estimating CO2 saturation and rock frame properties at the Sleipner CO2 storage pilot in the North Sea. We investigate the relation between rock physics properties and ...
    • Stress paths and predicted time-shifts around a depleting reservoir 

      Yan, Hong; Bakk, Audun; Holt, Rune Martin; Lozovyi, Serhii (Chapter, 2020)
      Time-lapse (4D) seismic is an essential tool for monitoring the subsurface in and around producing hydrocarbon or CO2 storage reservoirs. The seismic time-shifts, in the reservoir as well as in the overburden, depend on ...
    • Third-order elasticity of transversely isotropic field shales 

      Bakk, Audun; Duda, Marcin; Xie, Xiyang; Stenebråten, Jørn; Yan, Hong; MacBeth, Colin; Holt, Rune Martin (Peer reviewed; Journal article, 2023)
      The formations above a producing reservoir can exhibit large mechanical changes, creating a risk of significant subsidence and loss of rock integrity. These changes can be monitored by time-lapse seismic acquisition, which ...