摘要
鄂尔多斯盆地长8储层属于典型的低孔、低渗、低压致密砂岩储层。针对长8储层的特征,应用压裂软件建立压裂模型,以单井初期日产油量和累积产油量为目标,对裂缝参数进行优化。在优化裂缝参数的基础上,对施工参数进行优化。结果表明,鄂尔多斯盆地长8储层最优裂缝半长为180 m,最优裂缝导流能力为25μm^2·cm,合理的排量为4~4.5 m^3/min,合理的砂比为25%左右。该优化结果对解决致密砂岩储层的压裂参数优化问题具有一定的指导作用。
The Chang-8 reservoir of Ordos Basin belongs to tight sand oil reservoir of low porosity, low permeability and low pressure. According to reservoir characteristics of Chang-8 reservoir, this paper uses fracturing software to establish a fracturing model, which can optimize fracture parameters on the basis of early daily oil production and cumulative oil production of single well, and furthermore, construction parameters can be optimized. The results show that the optimal fracture half length is 180 m, the optimal fracture conductivity is 25 μm2· cm, reasonable displacement is about 4 - 4.5 m3/min, and reasonable proppant concentration is about 25 %. The optimization results provide guidance for solving fracturing parameters optimization in tight sandstone reservoir.
出处
《油气藏评价与开发》
CSCD
2017年第4期51-56,共6页
Petroleum Reservoir Evaluation and Development
基金
中国石化科技攻关项目"致密砂岩油藏有效开采关键技术应用研究"(P14076-1-03)
关键词
低渗透油藏
压裂模型
裂缝参数
施工参数
数值模拟
low permeability reservoir, fracturing model, fracturing parameter, construction parameter, numerical simulation
