摘要
依据已有的实验结果 ,建立了低渗油藏油气两相渗流的理论模型 .分析表明 ,当启动压力梯度为零时 ,就得到中高渗流油气两相渗流表达式 ,因此统一了油气两相达西流和非达西流的渗流方程 .启动压力梯度的存在是影响低渗油藏开采率低的主要因素 。
Based on achieved experimental results, a theoretical model of oil-gas seepage flow in low permeability reservoir is developed. The analysis of this theoretical model shows that it is the oil-gas seepage flow formula in medium to high permeability reservoir when starting pressure gradient is equal to zero. So it expresses the seepage equations of both Darcy flow and non-Darcy flow of oil-gas. The seepage starting pressure gradient is the major factor of influencing the recovery factor of low permeability reservoir.
出处
《西安石油大学学报(自然科学版)》
CAS
2004年第6期20-22,共3页
Journal of Xi’an Shiyou University(Natural Science Edition)
基金
中国科学院知识创新工程项目 (KZCX2 SW 117)资助