首页|Ultra-High Temperature (250℃+) and Wide Operating Temperature Range Ultracapacitor Enabling Downhole Power Source for Geothermal Exploration

Ultra-High Temperature (250℃+) and Wide Operating Temperature Range Ultracapacitor Enabling Downhole Power Source for Geothermal Exploration

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FastCAP developed a novel and innovative ultra-high temperature ultracapacitor ("ultracap") energy storage device showing outstanding performance suitable for geothermal exploration applications。 This proposed ultracap is an upgraded version of the previous 200℃ presented at GRC Summit 2014。 The ultracap performs reliably at ultra-high operating temperatures of 250℃ and beyond and operates over an extremely wide operating temperature range， -5℃ to 250℃+。 The rechargeable ultracap has significantly higher power density than lithium thionyl chloride batteries， a non-rechargeable incumbent used in oil and gas drilling today。 Several hermetically sealed， commercial ready prototype devices were tested in our laboratories at constant temperatures of 250℃+ showing no significant degradation over 1000 hours of operation (See Figure 1)。 Six similar prototypes will be tested at Sandia National Lab in the month of April， 2015 for an overall performance third party validation。 We expect these devices to show very good performance over 1000 hours of operation at three rated temperatures， 200℃， 225℃ and 250℃+， with negligible capacitance retention and minimal equivalent series resistance (ESR) increase。 Deployment of these novel ultra-high temperature ultracapacitors in geothermal drilling and exploration applications could have an immediate and significant impact on the effectiveness and efficiency of drilling processes， particularly with regard to use of advanced logging and monitoring techniques in the geothermal context。

250℃ Ultracapacitorultra-high temperature energy storagewide temperature range ultracapacitorgeothermal explorationdownhole energy storageextreme environment ultracapacitornanotechnologylithium-free energy storagesub-zero ultracapacitorlow temperature ultracapacitor

Nicolo Brambilla、Fabrizio Martini

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FastCAP Systems, Boston MA

Geothermal Resources Council annual meeting

Reno, NV(US)

Geothermal Resources Council annual meeting : Geothermal: always on

1065-1068

2015