Methods and apparatus for telemetry and power delivery

摘要

Remote sensing systems are provided including a recorder, a cable network and a plurality of downhole sensor nodes. The cable network comprises a first cable and a second cable. The first and second cables form a loop. The recorder and the plurality of downhole sensor nodes are connected to the cable network in series. The first cable delivers power to the nodes and the second cable comprises a power return and closes the loop to the recorder.