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

Table 6

Clay minerals from one well in SASP.

Item	Smectite (S)	Illite (I)	Kaolinite (K)	Chlorite (C)	Imon mixed layer (I/S)
Content (%)	1.41	29.67	47.95	13.83	7.35