Advanced search
1 file | 6.99 MB Add to list

Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen

(2019) NORWEGIAN JOURNAL OF GEOLOGY. 99(2). p.285-316
Author
Organization
Abstract
The Upper Triassic to Middle Jurassic Wilhelmoya Subgroup forms one of the more suitable reservoir units on the Norwegian Arctic archipelago of Svalbard. The target siliciclastic storage unit, which is encountered at approx. 670 m depth at the potential injection site in Adventdalen, central Spitsbergen, is a severely under-pressured (at least 35 bar), tight and compartmentalised reservoir with significant contribution of natural fractures to permeability. In this contribution, we characterise the 15-24 m-thick Wilhelmoya Subgroup storage unit using both borehole and outcrop data and present water-injection test results that indicate the presence of fluid-flow barriers and the generation of new, and propagation of pre-existing natural fractures during injection. Whole core samples from drillcores and outcrops were sampled for pore network characterisation and analysed using high-resolution X-ray computed tomography (Micro-CT). We demonstrate that heterogeneities such as structural discontinuities, igneous bodies and lateral facies variations, as examined in well core and equivalent outcrops, will strongly influence fluid flow in the target reservoir, both by steering and baffling fluid migration. Many of these heterogeneities are considered to be subseismic, and their detailed characterisation is important to predict subsurface CO2 storage potential and optimise injection strategy.
Keywords
CCS, reservoir compartmentalisation, Spitsbergen, OLD RED SANDSTONE, FOLD-THRUST BELT, BARENTS SEA, KNORRINGFJELLET FORMATION, RESERVOIR SANDSTONES, DOLERITIC INTRUSIONS, IGNEOUS INTRUSIONS, CONTINENTAL-MARGIN, STRUCTURAL OUTLINE, NORDENSKIOLD-LAND

Downloads

  • NJG Vol99 NrXX ArtXX Mulrooney.pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 6.99 MB

Citation

Please use this url to cite or link to this publication:

MLA
Mulrooney, Mark Joseph, et al. “Fluid Flow Properties of the Wilhelmøya Subgroup, a Potential Unconventional CO2 Storage Unit in Central Spitsbergen.” NORWEGIAN JOURNAL OF GEOLOGY, vol. 99, no. 2, 2019, pp. 285–316.
APA
Mulrooney, M. J., Larsen, L., Van Stappen, J., Rismyhr, B., Senger, K., Braathen, A., … Cnudde, V. (2019). Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen. NORWEGIAN JOURNAL OF GEOLOGY, 99(2), 285–316.
Chicago author-date
Mulrooney, Mark Joseph, Leif Larsen, Jeroen Van Stappen, Bjarte Rismyhr, Kim Senger, Alvar Braathen, Snorre Olaussen, Mai Britt E Mørk, Kei Ogata, and Veerle Cnudde. 2019. “Fluid Flow Properties of the Wilhelmøya Subgroup, a Potential Unconventional CO2 Storage Unit in Central Spitsbergen.” NORWEGIAN JOURNAL OF GEOLOGY 99 (2): 285–316.
Chicago author-date (all authors)
Mulrooney, Mark Joseph, Leif Larsen, Jeroen Van Stappen, Bjarte Rismyhr, Kim Senger, Alvar Braathen, Snorre Olaussen, Mai Britt E Mørk, Kei Ogata, and Veerle Cnudde. 2019. “Fluid Flow Properties of the Wilhelmøya Subgroup, a Potential Unconventional CO2 Storage Unit in Central Spitsbergen.” NORWEGIAN JOURNAL OF GEOLOGY 99 (2): 285–316.
Vancouver
1.
Mulrooney MJ, Larsen L, Van Stappen J, Rismyhr B, Senger K, Braathen A, et al. Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen. NORWEGIAN JOURNAL OF GEOLOGY. 2019;99(2):285–316.
IEEE
[1]
M. J. Mulrooney et al., “Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen,” NORWEGIAN JOURNAL OF GEOLOGY, vol. 99, no. 2, pp. 285–316, 2019.
@article{8599899,
  abstract     = {The Upper Triassic to Middle Jurassic Wilhelmoya Subgroup forms one of the more suitable reservoir units on the Norwegian Arctic archipelago of Svalbard. The target siliciclastic storage unit, which is encountered at approx. 670 m depth at the potential injection site in Adventdalen, central Spitsbergen, is a severely under-pressured (at least 35 bar), tight and compartmentalised reservoir with significant contribution of natural fractures to permeability. In this contribution, we characterise the 15-24 m-thick Wilhelmoya Subgroup storage unit using both borehole and outcrop data and present water-injection test results that indicate the presence of fluid-flow barriers and the generation of new, and propagation of pre-existing natural fractures during injection. Whole core samples from drillcores and outcrops were sampled for pore network characterisation and analysed using high-resolution X-ray computed tomography (Micro-CT). We demonstrate that heterogeneities such as structural discontinuities, igneous bodies and lateral facies variations, as examined in well core and equivalent outcrops, will strongly influence fluid flow in the target reservoir, both by steering and baffling fluid migration. Many of these heterogeneities are considered to be subseismic, and their detailed characterisation is important to predict subsurface CO2 storage potential and optimise injection strategy.},
  author       = {Mulrooney, Mark Joseph and Larsen, Leif and Van Stappen, Jeroen and Rismyhr, Bjarte and Senger, Kim and Braathen, Alvar and Olaussen, Snorre and Mørk, Mai Britt E and Ogata, Kei and Cnudde, Veerle},
  issn         = {0029-196X},
  journal      = {NORWEGIAN JOURNAL OF GEOLOGY},
  keywords     = {CCS,reservoir compartmentalisation,Spitsbergen,OLD RED SANDSTONE,FOLD-THRUST BELT,BARENTS SEA,KNORRINGFJELLET FORMATION,RESERVOIR SANDSTONES,DOLERITIC INTRUSIONS,IGNEOUS INTRUSIONS,CONTINENTAL-MARGIN,STRUCTURAL OUTLINE,NORDENSKIOLD-LAND},
  language     = {eng},
  number       = {2},
  pages        = {285--316},
  title        = {Fluid flow properties of the Wilhelmøya Subgroup, a potential unconventional CO2 storage unit in central Spitsbergen},
  url          = {http://dx.doi.org/10.17850/njg002},
  volume       = {99},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: