Systems, methods and computer program products for charging autonomous wireless sensors in subsurface environments
| DWPI Title: Method for remote charging autonomous wireless microsensors in subsurface environments such as oil and gas reservoirs, involves transmitting data of physicochemical states from microsensors to receiver, and analyzing transmitted data |
| Abstract: Autonomous wireless sensors in subsurface environments can be charged while present in the subsurface environment to allow the sensors to measure and wirelessly transmit measurements. The sensors rely upon a contrast agent to provide a power flow path to the sensors. |
| Use: Method for remote charging autonomous wireless microsensors in subsurface environments such as oil and gas reservoirs. Can also be used in wellbores, wells and wells. |
| Advantage: The method enables sending physicochemical state of subsurface engineered environments to data acquisition system, and realizing remote charging of embedded microsensors to provide for long-term, unobtrusive and high resolution subsurface monitoring. |
| Novelty: The method involves arranging multiple microsensors in a subterranean fracture of subterranean formation. Electrical power density in the subterranean formation is calculated. Power is wirelessly provided to the microsensors by multiple elements located at distance from the microsensors. Multiple physicochemical states are sensed by the microsensors. Data of the physicochemical states from the microsensors are transmitted to a receiver. The transmitted data are analyzed, where factor in determining provided power is provided as electrical power density. Energy is transmitted to wirelessly energize the microsensors by contrast agent i.e. conductive proppant. The elements are selected from group of a transmitter, a wellbore, a clutter, a cement, an electromagnetic (EM) contrast agent and an EM media modifier. |
| Filed: 3/2/2020 |
| Application Number: US16806742A |
| Tech ID: SD 14808.1 |
| 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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