Ngawha Geothermal Area

From Open Energy Information




Area Overview



Geothermal Area Profile



Location: Northland, New Zealand

Exploration Region: New Zealand Geothermal Region

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: -35.4181°, 173.8531°


Resource Estimate

Mean Reservoir Temp: 230°C
503.15 K
446 °F
905.67 °R
[1]

Estimated Reservoir Volume: 55 km³
55,000,000,000 m³
13.195 mi³
1,942,306,669,655 ft³
71,937,284,045 yd³
55,000,000,000,000 L

Mean Capacity: 25 MW
25,000 kW
25,000,000 W
25,000,000,000 mW
0.025 GW
2.5e-5 TW
[1]

USGS Mean Reservoir Temp:

USGS Estimated Reservoir Volume:

USGS Mean Capacity:

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History and Infrastructure



Operating Power Plants: 1


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Developing Power Projects: 0

No geothermal projects listed.

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Power Production Profile

Gross Production Capacity: 25 MW
25,000 kW
25,000,000 W
25,000,000,000 mW
0.025 GW
2.5e-5 TW

Net Production Capacity:

Owners  :
  • Top Energy

Power Purchasers :

Other Uses:


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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:

Flow Test Comment:

Initial Temperature:


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Well Field Description



Well Field Information

Development Area: 25


Number of Production Wells:

Number of Injection Wells:

Number of Replacement Wells:


Average Temperature of Geofluid: 200°C
473.15 K
392 °F
851.67 °R

Sanyal Classification (Wellhead):


Reservoir Temp (Geothermometry):

Reservoir Temp (Measured):

Sanyal Classification (Reservoir):


Depth to Top of Reservoir: 600m
0.6 km
0.373 mi
1,968.504 ft
656.166 yd
[1]

Depth to Bottom of Reservoir: 2800m
2.8 km
1.74 mi
9,186.352 ft
3,062.108 yd
[1]

Average Depth to Reservoir: 1700m
1.7 km
1.056 mi
5,577.428 ft
1,859.137 yd


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Geology of the Area



Geologic Setting

Tectonic Setting:

Controlling Structure:

Topographic Features:

Brophy Model: Type A: Magma-heated, Dry Steam Resource

Moeck-Beardsmore Play Type: CV-2a: Plutonic - Recent or Active Volcanism, CV-2b: Plutonic - Inactive Volcanism
"CV-2a: Plutonic - Recent or Active Volcanism, CV-2b: Plutonic - Inactive Volcanism" 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: Hot Springs

Relict Geothermal Features:

Volcanic Age: Pleistocene

Host Rock Age:

Host Rock Lithology: Greywackes

Cap Rock Age:

Cap Rock Lithology: Marine Sediments


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Geofluid Geochemistry



Geochemistry

Salinity (low):

Salinity (high):

Salinity (average):

Brine Constituents: High boron levels (de Bray, 2002). See table 1 (Sheppard, 1987)

Water Resistivity:


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NEPA-Related Analyses (0)


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 No NEPA-related documents listed.


Exploration Activities (0)


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


No exploration activities listed on OpenEI.

References


  1. 1.0 1.1 1.2 1.3 Ruggero Bertani. 2005. World Geothermal Power Generation 2001-2005. Proceedings of World Geothermal Congress; Turkey: World Geothermal Congress.


List of existing Geothermal Resource Areas.