华庆油田白153井区超低渗透油藏超前注水政策研究

Research of advanced waterflooding policy of ultra-low permeability reservoirs in the Bai-153 wellblock of Huaqing oUfiel

依据长庆油田低渗透油藏开发经验，超前注水期油井压力达到110％时，可以获得较好的开发效果．但受前期测压资料的限制，油井投产前压力往往达不到或超过设计目标的要求。因此，如何准确预测受超前注水参数影响的地层压力显得尤为重要。通过油藏工程、数值模拟及矿场数理统计等方法，对白153井区超前期注水强度、累计注水量及注水时间进行了详细的探讨，以期为下步大规模开展超低渗油藏超前注水技术研究提供理论支持。

According to the previous experience on development of low permeability reservoirs of Changqing Oilfield, faw^rable resuhs can be achieved when the oil well pressure at advanced waterflooding stage reaches 110%. However, limited by the pressure monitoring data at the early stage, before being put into production the oil well pressure may usually fall below or exceed the designed requirements. Therefore, how to accurately predict the formation pressure that is influenced by advanced waterflooding parameters is really important. By means of application of reserw^ir engineering, numerical simulation, anti field mathematical stalislies, the advanced waterflooding intensity, accumulated injected water volume and water injection time of Bail53 wellblock are detailedly discussed in order to provide theoretical support for next steps of researches on large-scale advanced waterflooding technology in uhra-low permeability reservoirs.