Review on Hydraulic Behavior of faults and models

Document Type : Original Article

Author

Mining Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran,

Abstract

Joints, deformation bands and faults are physical structures in rocks that have been developed as tabular zones of strain and fracture in response to tectonic and gravitational loading. The flow properties of faults are in general quite complex, because they can act as conduits or barriers to fluid flow. In most cases, a fault displays both aspects of this complex signature in time and space. Thus, the accurate description of permeability in the fault zone is an important aspect of the overall characterization of the reservoir or aquifer. Fault zone components consist of sheared joints, deformation bands, fragmented rock, fault rock, and slip surfaces, while damage outside of the core is in the form of joints, sheared joints and deformation bands.The distribution and orientation of these components may be variable within a fault zone,
and each component has its hydraulic properties that vary as functions of geologic, mechanical,
and hydrologic condition. Further, the infl uence of a given structural component on fl uid fl ow
within and around a fault zone depends strongly on the component’s geometric relationship to
other structural components and to the direction of fl uid fl ow in this research the different models that describe the hydraulic behavior of faults has been reviewed.

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Antonellini, M., Aydin, A., 2002Microstructure of deformation bands in pourous sandstones at arches nation park, journal of structural geology 16, 941-959.
Caine, J.S, et al, 1996, fault zone architecture and permeability structure, geology 24, 1025-1028.
Graham Wall, B, 2004, evoluation of fluid pathways along fracture controlled faults in fold-thrust belt carbonate strata , Ph.D thesis, Stanford university.
Micarelli, L. et al 2006, “Structural evolution and permeability of normal fault zones in highly porous carbonate rocks ” Journal of Structural Geology 28 , 1214–1227.
olsson, W, 1992, “The effect of slip on the flow of fluid through afracture”, geophysical research, 19, 541-543
Smith, L. 1990, “ Interaction of fault zones, fluid flow, and heat transfer at the basin scale, In: hydrogeology of low permeability environments”, hydrogeology, p 41-67
Smith . 1995, “ scaling and nonsealing faults in Louisiana gulf coast salt basin-implications for effective permeability of fractured rock”, association of petroleum geologist 64, 145-172
Taylor, W.L, 2000, “Affinity of joints and deformation bands-implications for effective permeability of fractured rock”, water resources research
Taylor, W.L, (1999), “fluid flow in and chemical alteration in fractured sandstones.”Ph.D thesis, Stanford university.