heat flow in sedimentary basins
DESCRIPTION
Heat Flow in Sedimentary Basins. Petroleum Geology Class 745 Spring 2002. Istvan Csato University of South Carolina Department of Geological Sciences. Heat Flow in Various Tectonic Settings. Welte et al. (1997). Subsidence Rates of Basins. Angevine et al. (1990). Heat Flow Equations. - PowerPoint PPT PresentationTRANSCRIPT
Heat Flow in Sedimentary BasinsHeat Flow in Sedimentary Basins
Istvan CsatoUniversity of South CarolinaDepartment of Geological Sciences
Petroleum Geology Class 745Spring 2002
Heat Flow in Various Tectonic Settings
Welte et al. (1997)
Subsidence Rates of Basins
Angevine et al. (1990)
q= kg q – heat fowk – thermal conductivityg – thermal gradient
Fourier’s law:
T= To + (q/k)z
C(t) = z[kz (z)] – vzwCw (z) + A
Heat transport equation:
bulk densityC – bulk heat capacityw – fluid densityC – fluid heat capacityvz – fluid velocityA – radioactive heat generation per unit volume per unit time
Heat Flow Equations
Bottom-hole Temperature
Deming (1997)
Thermal Conductivity
Kpr = km(1-)kw
m – matrixw – pore fluid
k = 1.0 – 4.5 W/mK
Deming and Chapman (1988) Ungerer et al. (1990)
Sedimentation Rate and Heat Flow
Deming (1997)
Heat Flow and Thrusting
Wygrala et al. (1990)
Heat Flow and Salt
Heynisch et al. (1987)
Heat Flow and Fluid Flow
Willet and Chapman (1987)
Heat Flow and Fluid Flow
Majorovitz et al. (1985)
Heat Flow Data
Young (<25 Ma) rift basins: 90-120 mW/m2
Foreland basins: 50-70 mW/m2
Intracratonic basins: 30-50 mW/m2
Deming (1997)