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While these written contributions are valuable, the real mother lode of Hubbert lore comes from a series of face-to-face interviews carried out over nine multihour sessions in Bethesda, Maryland, by the science historian Ronald E. Doel in 1989, just before Hubbert's sudden death later that year. Hubbert replied that his conclusion that Muskat's expression for Darcy's law is physically erroneous "cannot be invalidated by the insertion of escape clauses to the effect that gravity is being neglected" (Hubbert [20]). After his foray into groundwater science, Hubbert went on to make paradigm-shifting contributions in several other subfields of geology, notably his explanation of the hydrodynamic entrapment of petroleum (Hubbert [18]), his study of the mechanisms of hydraulic fracturing (Hubbert and Willis [16]), and his solution to the longstanding mysteries around the mechanisms of overthrust faulting (Hubbert and Rubey [15]). In his review, Hubbert pillories Muskat for not correcting the pressure-based version of Darcy's law, despite "the twelve years which have elapsed" between the two books, and sarcastically suggests that this incorrect form "should hereafter be known as 'Muskat's law'" (Hubbert [19]). [Extracted from the article] |
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