The water injection well of sandstone reservoir may succeed more than production well if taking acidfracturingtreatment because reducing of effect closed pressure on acid etching fracture.
由于降低了酸蚀裂缝的有效闭合压力，砂岩储层注水井酸压比生产井酸压更可能获得成功。
2
Increase the effective distance between fracture length and acid by acid-fracturingtreatment is a key to improve acid-fracturing producing rate for carbonate reservoir.
碳酸盐岩储层通过酸压改造，提高裂缝长度和酸液有效作用距离，是提高酸压措施建产率的关键。
3
Acidfracturing is an important treatment for the stimulation of the carbonate reservoir.