Interaction Law between Natural Fractures-Vugs and Acid-Etched Fracture during Steering Acid Fracturing in Carbonate Reservoirs

Table 2

Parameters and formula of experimental fluid.

Experimental fluid	Formula	Fluid viscosity (MPa·s)
Steering acid		10 (before the reaction with rock)/50 (after the reaction with rock)
Slick water		10
Gel		50
Self-generating acid		40