The poem “The Blind Men and the Elephant” is based on an ancient Indian fable in which each man described rather differently what he sensed about an elephant. A similar situation can, and sometimes does, occur in reservoir description. Evidence shows that a reasonably thorough understanding of a reservoir is not very likely without viewing it from many angles and perspectives.

This paper will show how two different perspectives of a reservoir—reservoir engineering and satellite remote sensing—can improve reservoir description and even allow (true) continuous time-lapse reservoir monitoring.

The idea is simple. If subsidence occurs over an oil field, satellite...

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