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

Table 10

B-2-X perforation thickness and permeability distribution [74].

No.	Sublayer	Average perforation thickness (m)		Effective permeability (D)
		Sandstone	Effective
1	SII10 + 11a	2.47	1.92	0.423
2	SII10 + 11b	2.49	2.08	0.504
3	SII12	2.70	2.29	0.570
	In total	7.66	6.29	0.503