Free Standard AU & NZ Shipping For All Book Orders Over $80!
Register      Login
Exploration Geophysics Exploration Geophysics Society
Journal of the Australian Society of Exploration Geophysicists
RESEARCH ARTICLE

Statistical methods for estimates of heat flow in Australia

J.P. Cull and G.R. Beardsmore

Exploration Geophysics 23(2) 83 - 86
Published: 1992

Abstract

Normally, special purpose drill holes are required to provide direct determinations of surface heat flow. These provide core samples for thermal conductivity measurements and allow access for measurements of a reliable geothermal gradient after long periods of equilibration. Different, indirect procedures are now required to provide estimates of heat flow for offshore basins. Bottom hole temperatures can be used with suitable corrections to provide an indication of the regional geothermal gradient. However, the corresponding thermal conductivities are more difficult to determine. Geophysical logs can be used to detect the major lithologies but detailed statistical analysis is required for numerical estimates. Complex mixing models are now suggested for geothermal surveys linking physical properties to variations in the mineralogy of each well.

https://doi.org/10.1071/EG992083

© ASEG 1992

Export Citation

View Dimensions