摘要
通过不同粘度流体的岩心流动模拟实验 ,揭示粘度变化对流体渗流及开发效果的影响。研究结果表明 :渗透率一定时 ,原油的粘度越低 ,渗流越接近线性达西流。低渗透油田热洗井作业时 ,高温虽可解除部分蜡质、沥青质等的沉积 ,但又造成近井带原油脱气 ,流动阻力增加 。
The influence of viscosity change on fluid percolation and development response is revealed through core flow test with fluids of different viscosity. The result shows that, when permeability is given, the lower the oil viscosity is, the closer is the percolation to linear Darcy flow. In thermal well-flushing operation for low permeability reservoir, although high temperature may remove parts of wax and asphalt deposition, it also causes crude degassing in immediate vicinity of wellbore, thus increasing flow resistance and affecting oilfield development velocity and effectiveness.
出处
《特种油气藏》
CAS
CSCD
2004年第4期95-97,共3页
Special Oil & Gas Reservoirs
关键词
低渗透油田
粘度效应
实验研究
渗流
流动阻力
low permeability oilfield
viscosity effect
experimental study
percolation
flow resistance
