PNNL

Abstract

We report here on the design of sensor networks, as a part of development of a prototypical field-deployable sensor/tracer technology for monitoring the rate of leakage of geologically sequestered CO2. The primary focus is on conservative-tracer technology for immediate leak detection. The design simulations are developed to answer several key questions about the sensor network layout. Simulation results indicate that the key parameters governing the monitoring network design are the sensor node spacing (S), sampling density D (no. of sensors/km2), minimum detection limit of sensor (L), injected tracer concentration (Co) and dispersed tracer concentration (Ct) in the environment.