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physical al. et Zoback Chang, After sandstones. in properties Reference comments General developed where 1972) (Freyburg – Germany 1987) (McNally and consolidated both grained, Fine Australia Basin, with sandstones unconsolidated range porosity wide Unpublished sandstones unconsolidated and Weak 1992) al. et Holt (Fjaer, UCS with sa
other Region Thuringia, Bowen Coast Gulf Coast Gulf Inlet, Cook Australia of Gulf Sedimentary worldwide (MPa), E
and – –
UCS Elsevier (fraction),
between of [(1+ν)/(1−ν)] 2 (1−2ν) p ρV 2 ) p V clay (kg/m 3 ),
relationships permission with 31.5 exp(−0.036
t)
t −3 10 7 ρ 2 V 2 p 0.78V clay ] 21 − ρV 2 p ρV 2 ) 10 −11 × 10 −10 × exp(0.000027E) ρ (µs/ft),
Empirical Reprinted MPa UCS, − V p 0.035 1200 × 1.4138 10 −20 × 3.3 [1+ 1.745×10 −9 exp(1.9 42.1 exp(1.14 3.87 46.2 (1−Bφ) 2 A exp(−10φ) 277
t (m/s), V p
4.1. used:
Table (2006). Equation No. 1 2 3 4 5 6 7 8 9 10 Units
