Restructuring of complex pore-network and the evolution of reservoir porosity as a function of space and time (to be used in mass conservation equation): Requires the history of reservoir compaction?
If the degree of compaction is neither related to porosity loss nor to the increase in density, then, can’t we apply Athy’s compaction model (which demonstrates the exponential porosity reduction from 50 to 5% over a depth of 2 – 2.5 km from the surface) to characterize the porosity associated with a carbonate reservoir (with dominant cementation, dissolution, pressure-solution, recrystallization & grain-replacement than the siliciclastic deposits)?
Can the linear relation between porosity reduction (with its respective increase in density) and the increased over-burden and tectonic stresses (using Athy’s Model) be applied confidently to characterize a typical oil/gas reservoir?
Whether the compaction associated with a typical petroleum reservoir could result solely from ‘chemical readjustment’ (under any circumstances); or will it always include the reservoir porosity that has resulted from recrystallization of solid grains as well?
If yes, will it be feasible to explicitly measure the enhancement in the rigidity of the solid-grain structure (resulting from the alteration of mechanically deformed clays into shales) to characterize the reservoir porosity?
Note: Approximation is always possible for a normally consolidated sediments of uniform lithology.
I think this chapter of book could help you;
Compaction of Sediments and Different Compaction Models
In book: Emilie Du Châtelet und die deutsche Aufklärung (January 2020).Troyee Das, Soumyajit Mukherjee.
That's available on the ResearchGate Server for download.
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