Research Article

A New Multichelating Acid System for High-Temperature Sandstone Reservoirs

Table 3

Unit cell constant of CaSO4·2H2O.

Samples (10−10 m) (10−10 m) (10−10 m)

Standard5.6815.186.51
Straight5.6715.136.51
After treatment of SAV-1/SAV-25.7115.276.54