Figure 7 - available via license: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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Comparison of dead oil and foamy oil. The left picture shows the dead oil used in the study, and the right picture shows that oil was produced in a foamy oil state in test 1.
Source publication
The anomalously high recovery of solution gas drive in some heavy oil reservoirs has been associated with foamy oil. The effects of external factors such as temperature, permeability, and the pressure depletion rate on foamy oil flow have been studied sufficiently, but few studies are available on the effect of heavy oil itself. In order to investi...
Context in source publication
Context 1
... produced gas is dispersed in oil in the form of microbubbles, which is different from conventional solution gas drive. The special mixture of oil and gas is called foamy oil, as shown in Figure 7. The third stage is the oil−gas two-phase flow stage, in which the solution gas is produced largely in a continuous phase, but the oil production rate declines gradually, and the produced gas−oil ratio increases rapidly. ...
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