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fracturing
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Datadepth 10000 ftSo 0.7Rho f 165 lb/ft3Rho o 50.5 lb/ft3Cf 0.000003 psi-1Co 0.00001 psi-1Cw 0.000003 psi-1PR psi
solution1- Calculate absolute overbudenơ 11459.00 psi2- Calculate Biot's poro elastic constantCt 0.00α 0.723- Calculate pore pressureP 3507.00 psi4- Calculate effective stressơeff 8918.00 psi
Datadepth 10000 ftSo 0.7Rho f 165 lb/ft3 depth overburden hor. StressRho o 50.5 lb/ft3 0 0 0Cf 0.000003 psi-1 10000 11459 5514Co 0.00001 psi-1Cw 0.000003 psi-1Poission ratio 0.25Pr 3507 psiơv 11459 psiα 0.72depletion 1000 psi
solutionơH min 5514 psiơH min' 2972 psi∆ơH min 483 psi
0 2 0 0 0 4 0 0 0 6 0 0 0 8 0 0 0 1 0 0 0 0 1 2 0 0 0 1 4 0 0 00
2000
4000
6000
8000
10000
12000 overburden original hor. stress
critical depth for hor. frac
new ground level
new overburden
0 2 0 0 0 4 0 0 0 6 0 0 0 8 0 0 0 1 0 0 0 0 1 2 0 0 0 1 4 0 0 00
2000
4000
6000
8000
10000
12000 overburden original hor. stress
critical depth for hor. frac
new ground level
Datadepth 10000 ftơH min 5000 psiơH max 6500 psiPp 3700 psiTensile stength 500 psiPoission ratio 0.25α 0.70
solution1- Calculate upper limit for break down pressurePbreak 5300 psi2- Calculate lower limit for break down pressureή 0.233Pbreak 4743
Est