Understanding fault and fracture networks to de-risk leakage from subsurface storage sites

R. E. Rizzo, H. Fazeli, C. Maier, R. March, D. Egya, F. Doster, A. Kubeyev, N. Kampman, K. Bisdom, J. Snippe, K. Senger, P. Betlem, T. Phillips, N. Forbes Inskip, O. Esegbue, A. Busch

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To verify successful long-term CO2 storage, it is critical to improve our understanding of leakage along natural faults and fractures within the primary caprock. In the proximity of a fault zone, interactions between multiple fracture sets can create complex networks which can play a fundamental role in fluid transport properties within the rock mass. Being able to fully characterise fault and fracture networks, in terms of fracture density, connectivity, aperture size and stress regime, can allow us to more accurately identify, analyse and model the bulk properties (e.g. transport, strength, anisotropy) and, therefore sealing behaviour, of faulted and fractured geological storage sites. Here, we present an integrated workflow which combines laboratory measurements of single fracture permeability with outcrop-scale analysis of fault and fracture networks occurring in reservoir/caprock sections. These data are then used to develop a hydromechanical model to upscale laboratory tests to network-scale and potentially to reservoir-scale, verified against in-situ fault permeability data, where available.

Original languageEnglish
Title of host publication1st Geoscience and Engineering in Energy Transition Conference, GET 2020
PublisherEAGE Publishing BV
ISBN (Electronic)9789462823549
DOIs
Publication statusPublished - 2020
Event1st Geoscience and Engineering in Energy Transition Conference 2020 - Virtual, Online
Duration: 16 Nov 202018 Nov 2020

Publication series

Name1st Geoscience and Engineering in Energy Transition Conference, GET 2020

Conference

Conference1st Geoscience and Engineering in Energy Transition Conference 2020
Abbreviated titleGET 2020
CityVirtual, Online
Period16/11/2018/11/20

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Energy Engineering and Power Technology

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