Heat Flow in Sedimentary Basins

1
Heat Flow in Sedimentary Basins
Petroleum Geology Class 745 Spring 2002
Istvan Csato University of South
Carolina Department of Geological Sciences
2
Heat Flow in Various Tectonic Settings
Welte et al. (1997)
3
Subsidence Rates of Basins
Angevine et al. (1990)
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Heat Flow Equations
Fouriers law
q kg q heat fow k thermal
conductivity g thermal gradient
T To (q/k)Dz
Heat transport equation
rC(dT/dt) d/dz kz (dT/dz) vzrwCw (dT /dz)
A
r - bulk density C bulk heat capacity rw
fluid density C fluid heat capacity vz fluid
velocity A radioactive heat generation
per unit volume per unit time
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Bottom-hole Temperature
Deming (1997)
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Thermal Conductivity
Ungerer et al. (1990)
Deming and Chapman (1988)
Kpr km(1-F)kwF
k 1.0 4.5 W/mK
m matrix w pore fluid
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Sedimentation Rate and Heat Flow
Deming (1997)
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Heat Flow and Thrusting
Wygrala et al. (1990)
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Heat Flow and Salt
Heynisch et al. (1987)
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Heat Flow and Fluid Flow
Willet and Chapman (1987)
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Heat Flow and Fluid Flow
Majorovitz et al. (1985)
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Heat Flow Data
Young (lt25 Ma) rift basins 90-120 mW/m2
Foreland basins 50-70 mW/m2
Intracratonic basins 30-50 mW/m2
Deming (1997)