Flow and Contaminant Transport in Fractured Rock by Jacob Bear, C-F. Tsang, Ghislain De Marsily

By Jacob Bear, C-F. Tsang, Ghislain De Marsily

Long ago or 3 a long time, fractured rock domain names have got expanding realization not just in reservoir engineering and hydrology, but in addition in reference to geological isolation of radioactive waste. destinations in either the saturated and unsaturated zones were into account simply because such repositories are assets of warmth and capability resources of groundwater illness. hence, as well as the delivery of mass of fluid stages in unmarried and multiphase move, the problems of warmth shipping and mass shipping of elements must be addressed.

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1976) describe such tests. In a nonhomogeneous material, magnitude of this coefficient will vary in space. However, Braester (1984) showed that even when this coefficient is taken as a constant (as in the case of uniform regular porous blocks), the pressure decline is not sufficiently sensitive to the block size. Braester, therefore, questions the usefulness of the solution. 6 Mass Balance in a Single Continuum Model An important conclusion from the features discussed above is that the flow in a fractured porous rock differs from that in an ordinary porous medium only during the initial stages of transient flow, and only in the vicinity of a producing well.

67), first proposed by Barenblatt and Zheltov (1960) and Barenblatt et al. (1960) assumes quasi-steady leakage, and an exchange that is proportional to the difference between the average pressures in the fractures and in the porous blocks. The coefficient of proportionality, assumed a constant, is approximately correlated to the porous block geometry. Duguid and Lee (1977) presented a slightly different double porosity model. 81) the pressures are relative to the initial one, and it is assumed that φ^τ <

A symbol for all other phases, except a). ßp Coefficient offluidcompressibility at constant pressure. 7 As superscript, symbol denoting a 7-component. θα Volumetric fraction of an a-phase. λ Coefficient of radioactive decay. μ Dynamic viscosity of afluidphase. va Outward unit vector to a surface. p Mass density. φ Piezometric head. Φ Porosity. 1. ) dU). ) (= JJ— fy (~) dU). Deviation of G from its intrinsic phase average, Ga, over an REV. ) over the thickness of a fracture. ) over thickness of thin domain.

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