A coal bed anomaly detection and imaging system comprises a synchronous transmitter
and receiver that are separated by a geologic structure with embedded and hidden
anomalies. The receiver is housed in a shuttle body that can be pumped into a borehole
by water or air pressure. The shuttle may itself employ hydraulic inching mechanism
to move within the drillhole. Signal measurements are reported out over a fiberoptic
pigtail. A separate radio signal path provides synchronization between the transmitter
and receiver. The receiver shuttle is tethered by this fiberoptic pigtail, and
it can be withdrawn from the borehole by the tether.
