System and process for secondary hydrocarbon recovery

Details System and process for secondary hydrocarbon recovery System and process for secondary hydrocarbon recovery

1999-05-11

2000-11-28

Suchfield, George

Wells

Processes

With indicating, testing, measuring or locating

166245, 16625003, 7315239, E21B 4700, E21B 4710

Patent

active

061522260

ABSTRACT:
A hydrocarbon reservoir undergoing secondary recovery is subject to a first and then at least a second gravity gradient survey in which a gravity gradiometer takes gradient measurements on the surface above the reservoir to define successive data sets. The differences between the first and subsequent gravity gradient survey yields information as to sub-surface density changes consequent to displacement of the hydrocarbon and the replacement thereof by the driveout fluid including the position, morphology, and velocity of the interface between the hydrocarbon to be recovered and the driveout fluid.

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