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3D Fault Detection on a Seismic Migration Image at the Lightning Dock Geothermal Area

Lightning Dock Geothermal (LDG), is an operating power plant in Hidalgo County, southwest New Mexico, USA. LDG LLC conducted a 3D active-source surface seismic survey in 2011 using accelerated weight drop sources for subsurface characterization. The 3D seismic survey covered a region of approximately 4 km in the east-west direction and approximately 3.5 km in the north-south direction. This 3D seismic survey used a simple square pattern to distribute source and receivers. The survey used a total of 17 receiver lines with a quasi-equal spacing of 660 ft and with an orientation of the north-south direction, and a total of 21 source lines with a quasi-equal spacing of 600 ft and with an orientation of the east-west direction. Within the source lines or the receiver lines, the source interval is 110 ft and the receiver interval is 220 ft. We perform migration velocity analysis and prestack depth migration to produce a high-resolution subsurface image, and then delineate faults on the migration image using a machine learning method. Our results provide valuable information for siting new wells to improve the geothermal energy production at the Lightning Dock geothermal area.

Session: Seismic Monitoring, Modelling and Management Needed for Geothermal Energy and Geologic Carbon Storage - III

Type: Oral

Room: Tikahtnu Ballroom A

Date: 5/2/2024

Presentation Time: 03:00 PM (local time)

Presenting Author: Lianjie Huang

Student Presenter: No

Additional Authors