Articles | Volume 14, issue 9
https://doi.org/10.5194/se-14-1005-2023
https://doi.org/10.5194/se-14-1005-2023
Research article
 | 
12 Sep 2023
Research article |  | 12 Sep 2023

Natural fracture patterns at Swift Reservoir anticline, NW Montana: the influence of structural position and lithology from multiple observation scales

Adam J. Cawood, Hannah Watkins, Clare E. Bond, Marian J. Warren, and Mark A. Cooper

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Cited articles

Agosta, F., Alessandroni, M., Antonellini, M., Tondi, E., and Giorgioni, M.: From fractures to flow: a field-based quantitative analysis of an outcropping carbonate reservoir, Tectonophysics, 490, 197–213, 2010. 
Aliverti, E., Biron, M., Francesconi, A., Mattiello, D., Nardon, S., and Peduzzi, C.: Data analysis, processing and 3D fracture network simulation at wellbore scale for fractured reservoir description, in: Fracture and In-Situ Stress Characterization of Hydrocarbon Reservoirs, edited by: Ameen, M., Geol. Soc. Spec. Publ., 209, 27–37, 2003. 
Awdal, A., Healy, D., and Alsop, G. I.: Fracture patterns and petrophysical properties of carbonates undergoing regional folding: A case study from Kurdistan, N Iraq, Mar. Petrol. Geol., 71, 149–167, 2016. 
Bachu, S.: Synthesis and model of formation-water flow, Alberta Basin, Canada, Am. Assoc. Petrol. Geol. Bull., 79, 1159–1178, 1995. 
Becker, I., Koehrer, B., Waldvogel, M., Jelinek, W., and Hilgers, C.: Comparing fracture statistics from outcrop and reservoir data using conventional manual and t-LiDAR derived scanlines in Ca2 carbonates from the Southern Permian Basin, Germany, Mar. Petrol. Geol., 95, 228–245, 2018. 
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Short summary
Here we test conceptual models of fracture development by investigating fractures across multiple scales. We find that most fractures increase in abundance towards the fold hinge, and we interpret these as being fold related. Other fractures at the site show inconsistent orientations and are unrelated to fold formation. Our results show that predicting fracture patterns requires the consideration of multiple geologic variables.
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