摘要
异常破裂压力储层埋藏深、岩性致密,构造应力作用强,地层孔隙压力高及储层伤害严重,地层破裂压力和裂缝延伸压力较高,造成地面施工压力过高,难度增大;同时也对储层改造的设备、管柱、工艺等提出了极高的要求。从储层地质和工程因素两个方面分析了异常破裂压力的成因,提出了应用酸化预处理、射孔优化、加重压裂液、降低施工摩阻等措施来降低施工压力,为异常破裂压力储层的压裂改造提供技术依据。
The abnormal fracture pressure reservoir is buried deep,whose lithology is dense,tectonic stress is strong,pore pressure is high and reservoir damage is serious,breakdown pressure and fracture extension pressure is high,which causes excessive pressure operating on the ground and more difficult,a high demand on the reservoir reform equipment,string and process is put forward at the same time.From two aspects of Reservoir geological and engineering factor,the causes of the abnormal breakdown are analyzed and measures of applying acidification pretreatment,perforating optimization,increased the fracturing fluid,reducing friction to reduce operating pressure are proposed which provides a technical basis for fracturing of the reservoir layer with abnormal breakdown pressure.
出处
《油气井测试》
2010年第3期46-48,共3页
Well Testing
关键词
异常破裂压力
压裂
施工压力
酸化预处理
加重压裂液
摩阻
abnormal breakdown pressure,fracturing,operating pressure,acidification pretreatment,increased the fracturing fluid,friction
