异常高压低渗透油藏注水优化分析——以史南油田史深100区块为例

Optimal analysis on water injection strategy of low permeability reservoirs with abnormal high pressure:Taking Block Shishen 100 as an example

异常高压低渗透油藏作为低渗透油藏的一种特殊类型,由于其处于地下较高压力场和温度场中,油气储层具有显著的弹塑性变形特征,开采机理有其自身特点。正确认识与评价油藏开发方案,对于经济高效地开发此类油藏具有重要的指导意义。文中以史深100断块沙三中亚段低渗透油藏为例,提出保持较高注水压力,通过井网加密等调整技术大幅提高史深100断块沙三中亚段油藏的开发效果,最后给出的开发建议为,在史深100区块逐渐加大井网加密力度,全面改善区块开发效果。

As a special kind of low permeability reservoir,the low permeability reservoir with abnormal high pressure has significant properties of elastic-plastic deformation because the reservoir is at high pressure and temperature field.The recovery mechanism has its own characteristics.Correct understanding of development plan for such reservoir has important guiding significance for economically and effectively developing the reservoir.Taking the middle member of Es3 reservoir in Block Shishen 100 as an example,this paper proposes to maintain a high injection pressure through the adjustment of well pattern infilling and other technologies,and greatly improve the development effect of reservoir.