Imaging Faults with Reverse-Time Migration for Geothermal Exploration at Jemez Pueblo in New Mexico
- Los Alamos National Laboratory
- TBA Power
- Jemez Purblo
- NM Bureau of Geology and Mineral Researces
- EES-17 visitor
The fault zones at Jemez Pueblo may dominate the flow paths of hot water, or confine the boundaries of the geothermal reservoir. Therefore, it is crucial to image the geometry of these fault zones for geothermal exploration in the area. We use reverse-time migration with a separation imaging condition to image the faults at Jemez Pueblo. A finite-difference full-wave equation method with a perfectly-matching-layer absorbing boundary condition is used for backward propagation of seismic reflection data from receivers and forward propagation of wavefields from sources. In the imaging region, the wavefields are separated into the upgoing and downgoing waves, and leftgoing and rightgoing waves. The upgoing and downgoing waves are used to obtain the downward-looking image, and the leftgoing and rightgoing waves are used to form the left-looking image and right-looking image from sources. The left-looking and right-looking images are normally weaker than the downward-looking image because the reflections from the fault zones are much weaker than those from sedimentary layers, but these migration results contain the images of the faults. We apply our reverse-time migration with a wavefield separation imaging condition to seismic data acquired at Jemez Pueblo, and our preliminary results reveal many faults in the area.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- DOE/LANL
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1014446
- Report Number(s):
- LA-UR-11-10640; TRN: US201110%%904
- Resource Relation:
- Conference: GRC's 35th Annual Meeting ; 2011-10-23 - 2011-10-26 ; San Diego, California, United States
- Country of Publication:
- United States
- Language:
- English
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