3. Results and Discussion 3.1. Basic Characteristics of Low Physical Intervals Developed by SAGD Method Four cores from different wells were selected to carry out the acid sensitivity evaluation experiments. It was seen from the experimental results, shown in Table 3, that the target formation was highly acid-sensitive. Attention should be paid to the strict control of the acidity of the working fluid, and an appropriate corrosion inhibitor and acid residue inhibitor should be added.
