2020
DOI: 10.1007/s00603-020-02248-3
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Experimental Investigation on Static and Dynamic Bulk Moduli of Dry and Fluid-Saturated Porous Sandstones

Abstract: Knowledge of pressure-dependent static and dynamic moduli of porous reservoir rocks is of key importance for evaluating geological setting of a reservoir in geo-energy applications. We examined experimentally the evolution of static and dynamic bulk moduli for porous Bentheim sandstone with increasing confining pressure up to about 190 MPa under dry and water-saturated conditions. The static bulk moduli (Ks) were estimated from stress–volumetric strain curves while dynamic bulk moduli (Kd) were derived from th… Show more

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Cited by 22 publications
(5 citation statements)
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“…In laboratory ultrasonic tests, the P-wave velocity is widely observed to increase when macroporous, clay-deficient rocks become (almost) fully saturated with water. This P-wave velocity increase, under zero confining pressure, has been reported in sandstone as 8 to 73 % (King, 1966;Han, 1987;Coyner, 1984;Mavko & Jizba, 1991;Wang et al, 2021); granite as 8 to 27 % (Nur & Simmons, 1969;Saito, 1981;Coyner, 1984); limestone as 0 to 73 % (Nur & Simmons, 1969;Coyner, 1984;Agersborg et al, 2008) and dolomite as 28 % (Nur & Simmons, 1969). Various physical mechanisms have been proposed to predict such P-wave velocity increase; for example, Gassmann's equation ), Biot's theory (Biot, 1956) and the squirt flow model (Mavko & Jizba, 1991;.…”
Section: Background On Elastic Response Of Porous Media During Water ...supporting
confidence: 72%
“…In laboratory ultrasonic tests, the P-wave velocity is widely observed to increase when macroporous, clay-deficient rocks become (almost) fully saturated with water. This P-wave velocity increase, under zero confining pressure, has been reported in sandstone as 8 to 73 % (King, 1966;Han, 1987;Coyner, 1984;Mavko & Jizba, 1991;Wang et al, 2021); granite as 8 to 27 % (Nur & Simmons, 1969;Saito, 1981;Coyner, 1984); limestone as 0 to 73 % (Nur & Simmons, 1969;Coyner, 1984;Agersborg et al, 2008) and dolomite as 28 % (Nur & Simmons, 1969). Various physical mechanisms have been proposed to predict such P-wave velocity increase; for example, Gassmann's equation ), Biot's theory (Biot, 1956) and the squirt flow model (Mavko & Jizba, 1991;.…”
Section: Background On Elastic Response Of Porous Media During Water ...supporting
confidence: 72%
“…In laboratory ultrasonic tests, the P-wave velocity is widely observed to increase when macroporous, clay-deficient rocks become (almost) fully saturated with water. This P-wave velocity increase, under zero confining pressure, has been reported in sandstone as 8 to 73 % [22][23][24][25][26] ; granite as 8 to 27% 9,12,24 ; limestone as 0 to 73% 12,24,27 and dolomite as 28%. 12 Various physical mechanisms have been proposed to predict such P-wave velocity increase; for example, Gassmann's equation, 11 Biot's theory 28 and the squirt flow model.…”
Section: Introductionsupporting
confidence: 68%
“…Due to the high sample permeability (10 − 12 m 2 ), fluid pressure rapidly equilibrates on the order of milliseconds within the whole sample volume ( 46 , 58 ). With the onset of fluid injection, slip along smooth and rough faults initiates with a delay that progressively decreases with subsequent injection cycles (stage 3 in Fig.…”
Section: Resultsmentioning
confidence: 99%