East Mesa Geothermal Area

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East Mesa Geothermal Area




Area Overview



Geothermal Area Profile



Location: California

Exploration Region: Gulf of California Rift Zone

GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

Coordinates: 32.78333333°, -115.25°


Resource Estimate

Mean Reservoir Temp: 170°C443.15 K
338 °F
797.67 °R
[1]

Estimated Reservoir Volume: 35.6 km³35,600,000,000 m³
8.541 mi³
1,257,202,135,267.6 ft³
46,563,042,036.4 yd³
35,600,000,000,000 L
[2]

Mean Capacity: 115 MW115,000 kW
115,000,000 W
115,000,000,000 mW
0.115 GW
1.15e-4 TW
[3]

USGS Mean Reservoir Temp: 355°C628.15 K
671 °F
1,130.67 °R
[4]

USGS Estimated Reservoir Volume: 35 km³ [4]

USGS Mean Capacity: 203 MW [4]

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History and Infrastructure


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Regulatory and Environmental Issues


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Exploration History



First Discovery Well

Completion Date:

Well Name:

Location:

Depth:

Initial Flow Rate:
  • "d" is not declared as a valid unit of measurement for this property.
  • The given value was not understood.

Flow Test Comment:

Initial Temperature:


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Well Field Description



Well Field Information

Development Area:


Number of Production Wells:

Number of Injection Wells:

Number of Replacement Wells:


Average Temperature of Geofluid: 296 170°C443.15 K
338 °F
797.67 °R
[6]

Sanyal Classification (Wellhead): Low Temperature


Reservoir Temp (Geothermometry):

Reservoir Temp (Measured):

Sanyal Classification (Reservoir):


Depth to Top of Reservoir: 1500 m1.5 km
0.932 mi
4,921.26 ft
1,640.415 yd
[1]

Depth to Bottom of Reservoir: 2500 m2.5 km
1.553 mi
8,202.1 ft
2,734.025 yd
[1]

Average Depth to Reservoir: 2000 m2 km
1.243 mi
6,561.68 ft
2,187.22 yd


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Geology of the Area



Geologic Setting

Tectonic Setting: Rift Zone

Controlling Structure:

Topographic Features:

Brophy Model: Type D: Sedimentary-hosted, Volcanic-related Resource

Moeck-Beardsmore Play Type: CV-2a: Plutonic - Recent or Active Volcanism, CV-2b: Plutonic - Inactive Volcanism, CV-3: Extensional Domain"CV-2a: Plutonic - Recent or Active Volcanism, CV-2b: Plutonic - Inactive Volcanism, CV-3: Extensional Domain" is not in the list of possible values (CV-1a: Magmatic - Extrusive, CV-1b: Magmatic - Intrusive, CV-2a: Plutonic - Recent or Active Volcanism, CV-2b: Plutonic - Inactive Volcanism, CV-3: Extensional Domain, CD-1: Intracratonic Basin, CD-2: Orogenic Belt, CD-3: Crystalline Rock - Basement) for this property.


Geologic Features

Modern Geothermal Features:

Relict Geothermal Features:

Volcanic Age: The given value was not understood.

Host Rock Age:

Host Rock Lithology: sandstone

Cap Rock Age:

Cap Rock Lithology: The given value was not understood.


The moderate-temperature, low-salinity, liquid-dominated East Mesa geothermal field is located in the Imperial Valley, southern California, about 110 miles east of the San Diego metropolitan area. This valley is part of the Salton trough- an actively developing structural depression that hosts a number of geothermal systems.

The subsurface stratigraphy at East Mesa is characterized mainly by complex interfingering of late Cenozoic Colorado River delta deposits. A shale caprock covers flow in dominantly sandstones of 120-150°C fluids whose migration is unaffected by faults in the region.[8]






Heat Source


known or inferred magmatic system


Geofluid Geochemistry



Geochemistry

Salinity (low): 1500 [9]

Salinity (high): 6000 [10]

Salinity (average): 3750

Brine Constituents:

Water Resistivity:


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NEPA-Related Analyses (1)


Below is a list of NEPA-related analyses that have been conducted in the area - and logged on OpenEI. To add an additional NEPA-related analysis, see the NEPA Database.

CSV

Document # Analysis
Type
Applicant Application
Date
Decision
Date
Lead
Agency
Development
Phase(s)
Techniques
DOI-BLM-CA-067-2006-12 EA Geothermal/Leasing


Exploration Activities (3)


Below is a list of Exploration that have been conducted in the area - and cataloged on OpenEI. Add.png Add a new Exploration Activity


Page Technique Activity Start Date Activity End Date Reference Material
Earth Tidal Analysis At East Mesa Geothermal Area (1984) Earth Tidal Analysis 1984 1984


Tracer Testing At East Mesa Geothermal Area (1983) Tracer Testing 1983 1983


Tracer Testing At East Mesa Geothermal Area (1984) Tracer Testing 1984 1984

References


  1. 1.0 1.1 1.2 Ruggero Bertani. 2005. World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress.
  2. Geothermex Inc.. 2004. New Geothermal Site Identification and Qualification. Richmond, CA: California Energy Commission. Report No.: P500-04-051. Contract No.: 500-04-051.
  3. Karl Gawell. 04/03/2014. Statement of Karl Gawell, Executive Director, Geothermal Energy Association Before the Senate Select Committee on California’s Energy Independence & Assembly Select Committee on Renewable Energy Economy in Rural California. Personal Communication sent to Senate Select Committee on California’s Energy Independence & Assembly Select Committee on Renewable Energy Economy in Rural California.
  4. 4.0 4.1 4.2 U.S. Geological Survey. 2008. Assessment of Moderate- and High-Temperature Geothermal Resources of the United States. USA: U.S. Geological Survey. Report No.: Fact Sheet 2008-3082.
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List of existing Geothermal Resource Areas.








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