| Abstract: A system and method for powering a borehole sensor with thermal energy is
disclosed. The system includes a tubular pipe inserted into a subsurface
borehole. A borehole casing is coaxially disposed with the tubular pipe.
An annular space between the casing and the tubular pipe has a power
source placed in the borehole to power a sensor in response to a
temperature gradient between a surface of the casing and a surface of the
tubular pipe. The method includes attaching thermopiles on the borehole
casing or tubing; placing the thermopile in the annulus between the
casing and the tubing; inducing a thermal gradient across the thermopile;
generating an electrical energy in response to the temperature gradient;
powering the sensor from the generated energy; and monitoring vertical
expansion of a CO.sub.2 plume. |
| Filed: 6/26/2020 |
| Application Number: 16/912778 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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