Effective flow properties heterolithic, cross-bedded tidal sandstones: Part 1. Surface-based modeling

Massart, B.; Jackson, M.; Hampson, Gary J.; Johnson, Howard D.; Legler, Berit; Jackson, Christopher

doi:10.1306/02011614221

Cited by 17 publications

(12 citation statements)

References 38 publications

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“…Consequently, in toeset 163 regions, the sandstone permeability is set to zero if the volumetric sandstone fraction is less 164 than 0.29, to mimic the lack of lateral connectivity in lenticular-bedded toesets. Note that, 165 were obtained from the Butterfly Canyon location described in the companion paper 224 (Massart et al, 2016). This model is also presented in the companion paper (see Figure 14 in 225 Massart et al, 2016).…”

Section: Surface-based Model Construction 110mentioning

confidence: 86%

“…Note that, 165 were obtained from the Butterfly Canyon location described in the companion paper 224 (Massart et al, 2016). This model is also presented in the companion paper (see Figure 14 in 225 Massart et al, 2016). 226…”

Section: Surface-based Model Construction 110mentioning

confidence: 86%

“…Models of cross-bedded heterolithic sandstones measuring 3 x 3 x 1 m (9 m 3 ) were 111 generated for this study using the surface-based methodology presented in the companion 112 paper (Massart et al, 2016), so only a brief outline of the methodology is provided here. The 113 methodology follows four key steps: 114…”

Section: Surface-based Model Construction 110mentioning

confidence: 99%

“…Mudstone drapes are modelled as elliptical patches that cover the foreset-149 toeset surfaces until a user-specified proportion of their area is reached, following the 150 methodology of Jackson and Muggeridge (2000). A mudstone frequency function, extracted 151 from outcrop data, is used to constrain the probability that a given location on each surface 152 is occupied by a mudstone drape (see Figure 12 in Massart et al, 2016). 153…”

Section: Surface-based Model Construction 110mentioning

confidence: 99%

“…In a companion paper (Massart et al, 2016, this issue), we document a new surface-88 based methodology for accurate geometric representation of lithologic heterogeneity in 89 heterolithic, cross-bedded tidal sandstones. The method requires the user to define input 90 values for a small number of parameters that describe the geometry and spatial distribution 91 of foreset-toeset surfaces and the distribution of mudstone drapes along these surfaces.…”

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confidence: 99%

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Effective flow properties heterolithic, cross-bedded tidal sandstones: Part 2. Flow simulation

Massart¹,

Jackson²,

Hampson³

et al. 2016

Bulletin

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Here we investigate the impact of mudstone drape distribution on the effective permeability 26 of heterolithic, cross-bedded tidal sandstones using three-dimensional (3D) surface-based 27 "mini-models" that capture the geometry of cross-beds at an appropriate scale. The impact 28 of seven geometric parameters has been determined: (1) mudstone fraction, (2) sandstone 29 laminae thickness, (3) mudstone drape continuity, (4) toeset dip, (5) climb angle of foreset-30 toeset surfaces, (6) proportion of foresets to toesets, and (7) trough or tabular geometry of 31 the cross-beds. 32We begin by identifying a representative elementary volume (REV) of 1 m 3 , confirming 33 that the model volume of 9 m 3 yields representative permeability values. Effective 34 permeability decreases as the mudstone fraction increases, and is highly anisotropic: vertical 35 permeability falls to c. 0.5% of the sandstone permeability at a mudstone fraction of 25%, 36 while the horizontal permeability falls to c. 5% and c. 50% of the sandstone value in the dip 37 (across mudstone drapes) and strike (parallel to mudstone drapes) directions, respectively. 38There is considerable spread around these values, because each parameter investigated can 39 significantly impact effective permeability, with the impact depending upon the flow 40 direction and mudstone fraction. The results yield improved estimates of effective 41 permeability in heterolithic, cross-bedded sandstones, which can be used to populate 42 reservoir-scale model grid blocks using estimates of mudstone fraction and geometrical 43 parameters obtained from core and outcrop-analog data. 44 45

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Section: Surface-based Model Construction 110mentioning

confidence: 86%

Section: Surface-based Model Construction 110mentioning

confidence: 86%

Section: Surface-based Model Construction 110mentioning

confidence: 99%

Section: Surface-based Model Construction 110mentioning

confidence: 99%

mentioning

confidence: 99%

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Effective flow properties heterolithic, cross-bedded tidal sandstones: Part 2. Flow simulation

Massart¹,

Jackson²,

Hampson³

et al. 2016

Bulletin

Self Cite

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Hierarchies of stratigraphic discontinuity surfaces in siliciclastic, carbonate and mixed siliciclastic‐bioclastic tidalites: Implications for fluid migration in reservoir quality assessment

Chiarella,

Longhitano,

Spalluto

et al. 2024

The Depositional Record

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The hierarchies of the stratigraphic discontinuity surfaces observed in ancient tidalites are qualitatively assessed, aiming to evaluate their role as possible preferential conduits for fluid migration. Three outcrop examples are presented from microtidal settings of southern Italy: (i) siliciclastic tidalites consisting of quartz‐rich cross‐stratified sandstones generated by strong two‐directional tidal currents flowing along a tidal strait; (ii) carbonate tidalites, which accumulated in a Cretaceous lagoon and tidal flat where peritidal cycles formed vertically‐stacked sequences of biopeloidal and fenestral packstones, wackestones and bindstones during repeated phases of Milankovitch‐scale sea‐level changes; (iii) mixed, siliciclastic‐bioclastic tidalites, deposited in a bay and recording offshore‐transition, to shoreface wave‐dominated and tide‐influenced environments. Observations made during this study suggest that fluid movement can be controlled by the presence of main bounding surfaces that occur at different dimensions, from large (hectometre)‐scale, to medium (decametre)‐scale, to smaller (metre)‐scales. These surfaces produced either by depositional or erosional processes, are characterised by different features and geometries in siliciclastic, carbonate and mixed siliciclastic‐bioclastic tidalites arguably revealing complex internal pathways for fluid flows. These results suggest that fluids propagating along the main discontinuities follow a dominant sub‐horizontal direction of propagation, associated with minor sub‐vertical movements, due to local internal surface geometries and interconnections and a general lack of fractures. This surface‐based approach to the study of fluid‐flow transmission within stratified rocks represents a conceptual attempt to predict fluid mobility and reservoir potential in tidalite‐bearing siliciclastic, carbonate and mixed reservoir rocks.

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Improving the robustness of the control volume finite element method with application to multiphase porous media flow

Salinas

Pavlidis

Xie

et al. 2017

Numerical Methods in Fluids

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SummaryControl volume finite element methods (CVFEMs) have been proposed to simulate flow in heterogeneous porous media because they are better able to capture complex geometries using unstructured meshes. However, producing good quality meshes in such models is nontrivial and may sometimes be impossible, especially when all or parts of the domains have very large aspect ratio. A novel CVFEM is proposed here that uses a control volume representation for pressure and yields significant improvements in the quality of the pressure matrix. The method is initially evaluated and then applied to a series of test cases using unstructured (triangular/tetrahedral) meshes, and numerical results are in good agreement with semianalytically obtained solutions. The convergence of the pressure matrix is then studied using complex, heterogeneous example problems. The results demonstrate that the new formulation yields a pressure matrix than can be solved efficiently even on highly distorted, tetrahedral meshes in models of heterogeneous porous media with large permeability contrasts. The new approach allows effective application of CVFEM in such models.

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Effective flow properties heterolithic, cross-bedded tidal sandstones: Part 1. Surface-based modeling

Cited by 17 publications

References 38 publications

Effective flow properties heterolithic, cross-bedded tidal sandstones: Part 2. Flow simulation

Effective flow properties heterolithic, cross-bedded tidal sandstones: Part 2. Flow simulation

Hierarchies of stratigraphic discontinuity surfaces in siliciclastic, carbonate and mixed siliciclastic‐bioclastic tidalites: Implications for fluid migration in reservoir quality assessment

Improving the robustness of the control volume finite element method with application to multiphase porous media flow

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