Potential Field Poisson Wavelet Multiscale Edge Analysis (Worms) for Geothermal; A Review

摘要

Gravity and magnetic potential field methods have a long history in geothermal technologies and elsewhere. The traditional approach is to take the measurements, grid them, invert them - using some canned procedure - and then to interpret the results. Starting about 20 years ago in mineral exploration, a wavelet-based approach short-circuited the inversion and produced results directly interpretable as lateral contacts in the underlying rocks. This talk will present a brief overview of the technique's underpinnings, and then show case studies of interest in geothermal activities. One case study will demonstrate the technique directly detecting a blind structure with injection-correlated seismicity in the Avoca region of Upstate New York, USA. Another case study correlates worm detected structures with those identified by seismic reflection in a geothermal exploration project near Wiesbaden in Germany.