High-Temperature-Resistant Diverting Acid for Carbonate Formation Fracturing in Sichuan Basin: A Property Evaluation and Field Study

Table 3

Double-core acidification experiment data.

Group no.	Core no.	Initial permeability (mD)	Permeability after acidizing (mD)	Permeability difference (times)	Acidizing effectiveness (%)
Group 1	1	2.8772	Breakthrough	57.1	/
	2	0.0504	0.0811		60.9
Group 2	3	7.9501	Breakthrough	52.2	/
	4	0.1523	0.2337		53.5