随着油田开发时间的延长,层间、层内和平面矛盾逐步加剧,为减缓产量递减速度,保持油田长期高产稳产,各油田均不同程度地采取了二次压裂增产措施,本文从压裂工艺、目的层渗透率变化等方面,探讨二次压裂的增产机理,为下步采取措施提供技术支持。 With the prolongation of oilfield development, the contradictions between layers, layers and planes have been gradually aggravated. In order to slow down the rate of production decline and maintain long-term high-yield and stable production, the oilfields adopted different measures for secondary fracturing stimulation to varying degrees. In this paper, Technology, target layer permeability changes and other aspects of secondary fracturing stimulation mechanism for the next step to provide technical support.