Anisotropic permeability and bimodal pore-size distributions of fine-grained marine sediments

Bolton, A. J.; Maltman, Alex; Fisher, Q.J.

doi:10.1016/s0264-8172(00)00019-2

Cited by 95 publications

(64 citation statements)

References 41 publications

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“…Aligned type I and II voids may provide efficient fluid transport along their long dimensions at low P e , but not at high P e . Much as observed by Bolton et al [2000], closure of compliant beddingparallel cracks may lead to reductions in permeability anisotropy at pressure. Our measurements of permeability for Wilcox shale at P e = $10 MPa are nearly identical for flow parallel and perpendicular to bedding.…”

Section: Pores Responsible For Flowmentioning

confidence: 77%

“…Compositional layering of higher and lower clay content, wavy clay mineral packets, and clay mineral alignments parallel to bedding are ubiquitous in shales [Lee et al, 1985;Bennett et al, 1989;Kim et al, 1998Kim et al, , 1999Hildenbrand and Urai, 2003], marine sediments [Kim et al, 2001], and compacted and sheared clays [Vasseur et al, 1995;Dewhurst et al, 1996a]. Aligned type I voids within individual clay grains and intergranular, bedding-parallel type II cracks have been observed in a number of shales and mud rocks [Dewhurst et al, 1998;Kim et al, 1999;Hildenbrand and Urai, 2003] and in marine sediments [Bolton et al, 2000]. Type III voids at clay platelet terminations have been imaged in other deeply buried shales [Lee et al, 1985] and we expect that type IV voids at face-to-edge clay interfaces are common as well.…”

Section: Pores Responsible For Flowmentioning

confidence: 99%

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Permeability of illite‐bearing shale: 1. Anisotropy and effects of clay content and loading

et al. 2004

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[1] Permeability of illite-rich shale recovered from the Wilcox formation and saturated with 1 M NaCl solution varies from 3 Â 10 À22 to 3 Â 10 À19 m 2 , depending on flow direction relative to bedding, clay content (40-65%), and effective pressure P e (2-12 MPa). Permeability k is anisotropic at low P e ; measured k values for flow parallel to bedding at P e = 3 MPa exceed those for flow perpendicular to bedding by a factor of 10, both for low clay content (LC) and high clay content (HC) samples. With increasing P e , k becomes increasingly isotropic, showing little directional dependence at 10-12 MPa. Permeability depends on clay content; k measured for LC samples exceed those of HC samples by a factor of 5. Permeability decreases irreversibly with the application of P e , following a cubic law of the form k = k 0 [1 À (P e /P 1 ) m ] 3 , where k 0 varies over 3 orders of magnitude, depending on orientation and clay content, m is dependent only on orientation (equal to 0.166 for bedding-parallel flow and 0.52 for flow across bedding), and P 1 (18-27 MPa) appears to be similar for all orientations and clay contents. Anisotropy and reductions in permeability with P e are attributed to the presence of crack-like voids parallel to bedding and their closure upon loading, respectively.

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Section: Pores Responsible For Flowmentioning

confidence: 77%

Section: Pores Responsible For Flowmentioning

confidence: 99%

Permeability of illite‐bearing shale: 1. Anisotropy and effects of clay content and loading

et al. 2004

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“…Of particular interest to our study is the anisotropy of permeability (e.g., Clennell et al, 1999, Bolton et al, 2000 because that property is likely to change in response to tectonic loading and fault-related deformation. Typically, comparisons are made between horizontal (cross-core) permeability (k h ) and vertical (alongcore) permeability (k v ) at the same sampling depth.…”

Section: Introductionmentioning

confidence: 99%

Data report: permeability of mud(stone) samples from Site C0001, IODP Expedition 315, Nankai Trough: NanTroSEIZE Stage 1

Li¹,

Likos²,

Guo³

et al. 2012

Proceedings of the IODP

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In this study, we conducted constant-flow permeability tests in the horizontal (cross-core) and vertical (along-core) directions using five whole-round core specimens of mud(stone) from Integrated Ocean Drilling Program (IODP) Site C0001. The site is located above the accretionary prism of the Nankai Trough offshore of the Kii Peninsula, Japan. The samples came from depths of approximately 25 to 290 m below seafloor and include lithologic Units I (slope apron facies) and II (upper accretionary prism). Effective isotropic confining stress during the tests was set at five increments ranging from 0.034 MPa (5 psi) to 0.551 MPa (80 psi). Average values of hydraulic conductivity range from 1.06 × 10 -8 to 7.30 × 10 -7 cm/s. Corresponding values of intrinsic permeability range from ~10 -17 to 10 -16 m 2 . The ratio of horizontal to vertical permeability (k h /k v ) averages 1.15. Environmental scanning electron microscopy was used to assess the relation between the sediment's microstructure and the anisotropy of permeability. Indicators of anisotropy generally show modestly better alignment of grains in the horizontal direction. IntroductionEarthquakes and tsunamis are among the most unpredictable and destructive natural disasters, sometimes destroying life as well as buildings on a massive scale. Particularly destructive are those earthquakes occurring in subduction zones. Recent examples include the Sumatra earthquake and tsunami in 2004 and the earthquake and tsunami off the coast of Sendai (Tohoku) Japan in 2011.To better understand how and why earthquakes and tsunamis occur in subduction zones, it is useful to measure the mechanical and hydrological properties of sediments and sedimentary rocks retrieved by scientific ocean drilling. Among those many properties, permeability has an important influence on sediment consolidation and strength through its affect on pore fluid pressure (Moore and Vrolijk, 1992; Saffer and Bekins, 2006). By characterizing hydrological properties both within and adjacent to fault zones at various depths, we can examine how geologic structures and permeability might influence one another over a range of effective stress values, thereby improving the understanding of fault dynamics.Kinoshita, M., Tobin, H., Ashi, J., Kimura, G., Lallemant, S., Screaton, E.J., Curewitz, D., Masago, H., Moe, K. In this report, we present the results of constant-flow permeability tests that were completed at the University of Missouri on whole-round core specimens retrieved from the Nankai Trough accretionary prism offshore Japan (Fig. F1) (Fig. F1). The upper three samples come from lithologic Unit I (slope apron facies), whereas the lower three are from Unit II (upper accretionary prism). Bedding dips at the sampling depths are also shown on Figure F1. Unfortunately, the deepest sample could not be tested successfully because of severe fracturing.Previous laboratory tests of natural clay-rich sediment and shale tend to show large ranges in permeability values because of differences in the material'...

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“…As noted by Martinsen (1994), the movement of failed material downslope across the basal shear surface can lead to intense deformation. This morphodomain is dominated by shear stress and strike-slip deformation; as a result, The sealing potential of the translational morphodomian is relatively promising compared to the other morphodomains because of the relative absence of mass-transport-induced faulting and the positive effect of shear deformation; as it preferentially destroys large pore-throats (Yamamoto, 2006) and can also reduce the permeability of the remolded material thus creating better sealing facies (Arch and Maltman, 1990;Dewhurst et al, 1996;Bolton et al, 2000). Figure 1.7: (a) Examples of different styles of deformation in rafted blocks from Gamboa et al (2012).…”

Section: Translational Morphodomainmentioning

confidence: 99%

Fabric Development and Pore-Throat Reduction in a Mass-Transport Deposit in the Jubilee Gas Field, Eastern Gulf of Mexico: Consequences for the Sealing Capacity of MTDs

Cardona

Wood

Day-Stirrat

et al. 2016

Advances in Natural and Technological Hazards Research

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Anisotropic permeability and bimodal pore-size distributions of fine-grained marine sediments

Cited by 95 publications

References 41 publications

Permeability of illite‐bearing shale: 1. Anisotropy and effects of clay content and loading

Permeability of illite‐bearing shale: 1. Anisotropy and effects of clay content and loading

Data report: permeability of mud(stone) samples from Site C0001, IODP Expedition 315, Nankai Trough: NanTroSEIZE Stage 1

Fabric Development and Pore-Throat Reduction in a Mass-Transport Deposit in the Jubilee Gas Field, Eastern Gulf of Mexico: Consequences for the Sealing Capacity of MTDs

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