The foam-drive process is one of the enhanced oil recovery concepts which promises significant recovery of oil not otherwise recoverable by waterflooding or immiscible gas injection. The work has been guided by the following observation by investigators in enhanced oil recovery; that is that the development of flooding processes employing immiscible gas injection or water is severely obstructed by the frontal instability resulting from an unfavorable mobility ratio. Such a condition occurs when the displacing fluid is less viscous than the displaced fluid (oil), unless compensated by the effect of a uniform and 'opposite' relative permeability ratio. The basis of this study lies in the fact that the mobility control needed to increase both displacement and sweep efficiencies may be obtained using foam.
|Number of pages||11|
|Journal||Chemical Engineering Research and Design|
|Publication status||Published - Mar 1985|