Nationwide Collection of Heat Flow and Temperture Gradient Data and Related Resources

This dataset features a large collection of various types of well data and related resources related to geothermal exploration across the US. This dataset contains publications, curated well data, maps, and other resources from prior to 2014, when this was originally compiled for the now-retired National Geothermal Data System (NGDS).

- Nationwide heat flow and gradient data on >44,000 wells
- >6,000 related resources tied to wells
- >900 publication PDFs and related links

SMU Geothermal Laboratory contributed two different nationwide heat flow databases to the project. One is based on equilibrium temperature measurements (over 14,000 sites) and the other is based on corrected bottom hole temperature (BHT) data from oil and gas industry wells (over 30,000 sites). In addition, scanned field notes and temperature-depth curves were associated with approximately 6000 specific sites in the heat flow database. Records were corrected and overlapping sites in the equilibrium heat flow database were linked between the original SMU National database and the UND Global Heat Flow database. New or related sites, which were not previously published because they lacked full heat flow content, are now included as gradient only information along with their detailed temperature data to fill-in data gaps. Finally, SMU submitted over 920 scanned publications, reports, and maps suitable for full text searching.