Alkali Effect on Alkali-Surfactant-Polymer (ASP) Flooding Enhanced Oil Recovery Performance: Two Large-Scale Field Tests’ Evidence

Table 19

Average well production comparison.

Block	Water	Prepolymer	ASP main	ASP vice	Postpolymer
SASP	2.3	2.7	9	5.5	4.4
WASP	1	0.75	8.86	5.68	4.11