Developing an Integrated Thermoelectric System to Mitigate Methane Emissions Effectively

methane mitigation thermoelectric generator (MMTEG)/burner photoGTI Energy has developed a methane mitigation thermoelectric generator (MMTEG) system for gas field applications with funding from the Department of Energy National Energy Technology Laboratory. The system integrates a thermoelectric generator to provide power to compress air that is used instead of natural gas to operate the pneumatic controllers. The team designed the system, created a retrofit for gas well production sites, and tested it in a lab environment.

Results indicate the MMTEG system minimized natural gas venting and leakage by 97%, and reduced greenhouse gas emissions by 1000x. GTI Energy is currently pursuing a field test of the system.

Methane Mitigation Thermoelectric Generator (MMTEG) schematic - Current systems actuator Vent 252 SCFD of NG*, 7056 SCFD GHG Eq. CO2**, Retrofit system with MMTEG Unit: Burner Vent 1.59 SCFD CO2 Emitted*** Implementation of this system reduces emissions by a factor >1000 - *Based on Allen, et al., Measurement of methane emissions at natural gas production sites in the United States, PNAS, Vol 110, No. 44, pp 17768-17773 - **Using GHG intensification factor of 28 - ***Assumes 2.27 cycles per day per controller, per conversation with D. Sevier SWN

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