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2008 New Mexico Geothermal Energy Working Group Meeting Perma Tools An energy company reaching new deep resources in fossil energy and geothermal power production. Randy Normann, CTO. Heat Of The Earth. Approximately 99% of the earth is >1000C (1800F)

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Randy Normann, CTO

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Randy normann cto

2008 New Mexico Geothermal Energy Working Group MeetingPerma Tools An energy company reaching new deep resources in fossil energy and geothermal power production

Randy Normann, CTO


Heat of the earth

Heat Of The Earth

  • Approximately 99% of the earth is >1000C (1800F)

  • Approximately 99.9% of the earth is > 100C (212F) the boiling point of water

    • Information from the German Energy Agency


Expected us temperatures at 6km doe dr dave blackwell smu

Expected US Temperatures at 6kMDOE & Dr. Dave Blackwell, SMU


Nm temperatures at 6km

NM Temperatures at 6km


Increasing temperatures as a function of depth

Temperature (°C)

10

20

30

40

50

0

Water table

100

200

Sandia computer tool

300

DTS tool

400

m

)

500

(

h

t

p

e

D

600

700

SMU electric-line tool

800

900

SMU computer tool

1000

0

15

30

45

60

75

Gradient (°C/km)

Increasing Temperatures as a Function of Depth

  • Earth is renewable energy

  • The Earth temperature gradient is between 17-30C/Km

  • Even the Kansas well temperature profile to the left shows increasing temperatures as a function of depth.

From: “how Hot Is It” , Ken W. Wisian et al, GRC trans. V20,September/Oct 1996


The earth is renewable energy

The Earth is Renewable Energy

  • Well temp gradients are range up to 60C/km!

  • Natural occurring K40 (potassium) is richer in some formations than others

  • NM has both uranium and potassium (potash)

From: “how Hot Is It” , Ken W. Wisian et al, GRC trans. V20,September/Oct 1996


Egs enhance geothermal resources

EGS: Enhance Geothermal Resources

  • For New Mexico, EGS could mean:

    • Converting deep oil and gas wells to geothermal power production

      • Small binary power plants

      • Heat harvesting of hot co-produced fluids

    • Creating man made geothermal reservoirs

      • Hot dry rock projects

      • Potentially large power plants

      • Working fluids not limited to water but could be CO2 or other fluids


Egr engineered geothermal reservoir

EGR: Engineered Geothermal Reservoir

Well is drilled to desired temperature and rock type. Hydraulic pressure is used to fracture the rock.


Fractures can reach 1000s of feet away from the well

Fractures Can Reach 1000s of Feet Away From the Well


Enclosed geothermal system

Enclosed Geothermal System

The fractured rock is used as an heat exchanger. This is the standard concept shown in EGS presentations.


A more realistic view

A More Realistic View

Horizontal wells can reach up to 6 miles in length!!

Horizontal wells in the hot formations can greatly increase the size of the reservoir.


Shameless ad

Shameless Ad

First geothermal tool – designed at Sandia built New Mexico business.


Conclusion

Conclusion

  • New Mexico has significant geothermal potential for EGS

    • Small power binary power plants

    • Large EGR power plants

  • Questions for the group

    • Has anyone looked at the potential heat generated in NM rock formations?

    • Has anyone considered using other fluids other than water for a hot dry rock heat exchanger for New Mexico EGS?


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