Tests indicate that the dissolution velocity of gypsum in acid is lower than that of carbonate , and the addition of calcium chloride in not necessary .

• 实验数据表明:在相同条件下,石膏的酸蚀速度比碳酸盐岩慢得多,在酸化含石膏的碳酸盐地层时,不一定总需要在酸液中添加氯化钙。