Optimization of acid injection rate in high rate acidizing to enhance the production rate: An experimental study in Abteymour oil field, Iran

摘要

Matrix acidizing in which the injection pressure is maintained lower than fracturing limits of the formation, has long been known as a remedial stimulation technique to restore the well productivity. It is a must to determine the acidizing parameters such as injection rate and volume in a systematic way in order to achieve an optimum efficient condition. Also, it is well known that low injection rates result in surface dissolution whereas high rates will create ramified wormholes. A single, dominant wormhole will be formed at an optimum intermediate rate.