||Seismic reservoir monitoring with encoded permanent seismic arrays||
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Hydrocarbon reservoirs can be efficiently monitored with encoded data recorded by permanent seismic arrays.
Permanent seismic sources and receivers can yield a vast amount of data that may enable near-real-time monitoring.
I propose an encoding approach that may overcome some of the operational, storage and processing challenges posed by these vast data volumes.
Although data encoding introduces cross-talk artifacts, permanent arrays allow for good repeatability of such artifacts, thereby aiding time-lapse seismic cross-equalization.
Because the proposed method utilize low-energy intermittent seismic sweeps, data must be recorded for longer durations compared to conventional data recording.
Direct migration of these long-duration data is efficient and gives good-quality time-lapse images.
Using a 2D numerical model, I show that this method can produce reliable time-lapse images of comparable quality to those from conventional seismic sources.