Fractures, faults, and hydrocarbon entrapment, migration and flow

Fractures, faults, and hydrocarbon entrapment, migration and flow This paper presents an overview of the role of structural heterogeneities in hydrocarbon entrapment, migration and flow. Three common structural heterogeneity types are considered: (1) dilatant fractures (joints, veins, and dikes); (2) contraction/compaction structures (solution seams and compaction bands); and (3) shear fractures (faults). Each class of structures has a different geometry, pattern, and fluid flow property, which are described by using analog outcrop studies, conceptual models, and, in some cases, actual subsurface data. Permeability of these structures may, on average, be a few orders of magnitude higher or lower than those of the corresponding matrix rocks. Based on these differences and the widespread occurrence of fractures and faults in rocks, it is concluded that structural heterogeneities should be essential elements of hydrocarbon migration and flow as well as entrapment and that they should be included in large-scale basin models and reservoir-scale simulation models. This proposition is supported by a number of case studies of various reservoirs presented in this paper. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine and Petroleum Geology Elsevier

Fractures, faults, and hydrocarbon entrapment, migration and flow

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Publisher
Elsevier
Copyright
Copyright © 2000 Elsevier Science Ltd
ISSN
0264-8172
eISSN
1873-4073
D.O.I.
10.1016/S0264-8172(00)00020-9
Publisher site
See Article on Publisher Site

Abstract

This paper presents an overview of the role of structural heterogeneities in hydrocarbon entrapment, migration and flow. Three common structural heterogeneity types are considered: (1) dilatant fractures (joints, veins, and dikes); (2) contraction/compaction structures (solution seams and compaction bands); and (3) shear fractures (faults). Each class of structures has a different geometry, pattern, and fluid flow property, which are described by using analog outcrop studies, conceptual models, and, in some cases, actual subsurface data. Permeability of these structures may, on average, be a few orders of magnitude higher or lower than those of the corresponding matrix rocks. Based on these differences and the widespread occurrence of fractures and faults in rocks, it is concluded that structural heterogeneities should be essential elements of hydrocarbon migration and flow as well as entrapment and that they should be included in large-scale basin models and reservoir-scale simulation models. This proposition is supported by a number of case studies of various reservoirs presented in this paper.

Journal

Marine and Petroleum GeologyElsevier

Published: Aug 1, 2000

References

  • Deep crustal growth of quartz, kyanite and garnet into large-aperture, fluid filled fractures, north-eastern Connecticut, USA
    Ague, J.J
  • Evolution of pull-apart basins and their scale independence
    Aydin, A; Nur, A
  • Hydrogeology of thrust faults and crystalline thrust sheets: Results of combined field and modeling studies
    Forster, C.B; Evans, J.P
  • Compaction bands: a structural analog for anti-mode I cracks in aeolian sandstone
    Mollema, P.N; Antonellini, M.A
  • Field measurement of radial solute transport in fractured rock
    Novakowski, K.S; Lapcevic, P.A
  • Structural permeability of fluid-driven fault-fracture meshes
    Sibson, R.H

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