摘要
基于盐间页岩油藏压裂具有施工压力平稳、停泵压力不降及压后返排效率高的特征,从弹性模量、地应力、隔层厚度、抗拉强度及层间界面剪切强度等方面分析了上下盐岩隔层构造对压裂的影响,从储层塑性特征、微观结构特征及基质滤失特征等方面分析了储层对压裂的影响,明确了上下盐层的特殊构造、储层塑性特征及基质的不连通性是影响压裂特征的主控因素,为类似塑性储层改造提供参考。
Based on the characteristics of stable operating pressure,stable pump stopping pressure and efficient flowback in the course of inter-salt shale reservoir fracturing,this paper analyzes the impact of upper-and-lower salt rock interlayer structure on fracturing from the aspects of elasticity modulus,crustal stress,barrier thickness,extension strength and interlayer interfacial shear strength and the impact of reservoir on fracturing from the aspects of reservoir plastic characteristic,microstructure characteristic and matrix leak-off characteristic and determines that special upper-and-lower salt bed structure,reservoir plastic characteristic and matrix unconnectedness are the main factors for affecting fracturing characteristic,providing a reference for similar plastic reservoir modification.
作者
李保林
LI Baolin(Petroleum Engineering Technology Research Institute of Jianghan Oilfield Company,SINOPEC,Wuhan,Hubei,430035,China)
出处
《江汉石油职工大学学报》
2018年第6期18-21,共4页
Journal of Jianghan Petroleum University of Staff and Workers
基金
国家重大专项"盐间页岩油储层改造机理及增产技术研究"(2017ZX05049003-010)
关键词
盐间页岩
油藏
压裂施工
返排特征
Inter-salt Shale
Reservoir
Fracturing
Flowback Characteristics
