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随着尕斯库勒油田不断的注水开发,因地质因素、储层潜在伤害、外来诱导伤害等因素的综合作用下,地层吸水能力下降,导致水井注水压力升高,达不到配注要求。从近几年尕斯主力油田注水开发情况分析,注水井欠注已经严重影响到了注水开发效果,部分注水井长期欠注导致油藏局部地层能量亏空,采收率低下。因此,通过注水井增注作业,降低注水压力,提高注水井吸水能力的需求极为迫切。
With the continuous waterflood development in Gaskule Oilfield, due to the combination of geological factors, potential reservoir damage and exotic induced damage, the water absorption capacity of the formation will decrease, leading to the pressure increase of water injection wells, failing to meet the requirements of injection. According to the analysis of waterflood development in the main oil fields of Gas in recent years, underfilling of injection wells has seriously affected the effect of waterflood development. Partial long-term underfilling of water injection wells leads to local energy deficit in the reservoirs, and the recovery rate is low. Therefore, it is extremely urgent to increase the water injection capacity by injecting water into wells to reduce water injection pressure.