Joint processing and integrated interpretation of EM and seismic data—an effective method for detecting complicated reservoir targets

摘要

In China it has become common to integrate several geophysical techniques when exploring for reservoirs in complex geologic areas. Conventional seismic cannot provide a good image below igneous rock, salt domes, and/or complex and deeply dipping structures, and it has major limitations in determining if a reservoir trap contains hydrocarbons and in mapping the range and scope of a hydrocarbon-bearing reservoir. EM techniques, on the other hand, have recently progressed to the point that they can solve specific E&P problems. EM instrumentation has improved and many new methods have been developed (e.g., high-power time-frequency and borehole-to-surface methods). Processing and interpretation techniques (e.g., joint inversion, constrained inversion, and comprehensive and integrated interpretation) also have improved.