SEISMIC ANALYSIS USING ELECTRICAL SUBMERSIBLE PUMP AS A SEISMIC SOURCE

摘要

Seismic data is collected by using an electrical submersible pump assembly ina well that is producing well fluid. By sweeping the rotational speed of thepump assembly through a selected range at selected intervals, seismic waves ofvarying frequency are emitted, These seismic waves are then picked up with aseismic sensor located at the surface or located in another well. If theseismic sensors are located in another well, the signal from the sensor may betransmitted to the surface by superimposing the data onto the power cableleading to the pump located in that other well. The seismic survey may berepeated at regular intervals, and the results will reveal the changes thathave taken place over time in the reservoir.