Zapata Incorporated

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Geothermal

ZAPATA provides geophysical services for both geothermal exploration and induced seismicity monitoring. Our geophysicists are among the industry’s  most experienced when it comes to the application of seismic reflection techniques in “hard rock” environments, which require special considerations during acquisition, processing and interpretation to be successful.  In addition, our team is well versed in electromagnetic and electrical methods that can be applied to the search for  exploitable geothermal resources.

ZAPATA installs, operates and maintains passive seismic  networks used to monitor induced seismicity at active geothermal power plants. Passive seismic networks can also used in geothermal exploration, the evaluation of dam and power plant sites, and in volcanology.  Passive networks provide the spatial distribution of earthquake hypocenters within an area of interest.

Brawley Passive Seismic for Geothermal Field

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ZAPATA has installed and for several years monitored a network of passive seismic stations in the vicinity of Brawley, California.  The network has allowed the detection of many more seismic events than are recorded on the southern California network established by USGS, and the hypocenters of the events have been located and mapped to monitor any seismicity around the geothermal well field.

Tuscarora Seismic Reflection

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The objective of the seismic reflection profiling in the vicinity of Tuscarora, Nevada was to delineate the general geologic structure within the area of interest, and in particular to locate steeply dipping normal faults associated with the site’s narrow north-south graben. The geology at the site consists of a thin veneer of alluvium overlying volcanic rocks, a large part of which have been hydrothermally altered into clays.  ZAPATA performed seismic reflection surveys along four lines, using its iVi EnviroVibe Vibroseis Source and Geometrics Geode Recording System.  The effort consisted of  5 linear miles of data acquisition, processing and full interpretation.