Reservoir heterogeneity is the most important reason for low recovery and early excess water
production. Experimental study on uniform mobility displacement was conducted to improve
conformance and reduce water channeling for heterogeneous reservoir. The principle and mechanism
were founded using a heterogeneous stratified reservoir model. For this model, injection slugs
matching different permeable layers can flow simultaneously and achieve a piston-like flow. Mobility
contour was proposed to screen polymer concentration. Displacement experiments were conducted in
heterogeneous cores to estimate the EOR effect. The results show that uniform mobility displacement
can improve oil recovery greater than polymer flooding and ASP flooding. This may provide a new
EOR method to reduce water production for heterogeneous reservoir.
Relation:
Journal of Applied Science and Engineering 19(3), pp.321-328
