Mobility controlled caustic flood

Sarem, A.M., 1974. Secondary and tertiary recovery of oil by MCCF (mobility-controlled caustic flooding) process. Paper SPE 4901 presented at the SPE-AIME 44 Annual California Regional Meeting, San Francisco, 4-5 April. 

Other techniques such as the mobility controlled caustic flooding process by Saram (20, 21, 22) and combinations of polymer and alkali have been investig ated, but these have not been widely used as yet and are currently perceived as extensions of the three processes discussed above. 

Polymers are used for mobility control in chemical flooding processes such as micellar-polymer and caustic-polymer flooding and in polymer augmented waterflooding. Selection of a polymer for mobility control is a complex process because it is not possible to predict the behavior of a polymer in porous rock from rheological measurements such as viscosity/ shear rate curves. Polymers used for mobility control are non-Newtonian fluids. Flow characteristics are controlled by the shear field to which the polymer is subjected. Properties of polymers can be measured under steady shear in rheometers. However, in porous rock, it is difficult to define the shear environment a polymer experiences as it flows through tortuous pores. 

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