摘要
基于底水油藏具有两种渗流模型的假设,即射孔段上部为水平径向流动,射孔段下部为半球状向心流动,推导出油井见水前离井轴任一半径在任一时刻的水锥高度的隐式函数,由此可确定底水的突破时间和不同时刻水锥的剖面形态。通过实例计算与实际结果的比较,见水时间的预测误差小于5%.
There are two percolation models developed for bottom-water reservoirs,i.e.,the model for horizontal radial flow above perforation interval and the model for semispherical centripetal flow below perforation interval.Based on these models,implicit function for water-coning height at any time in any radius away from oil well axis before water breakthrough is derived,thus the time of bottom-water breakthrough and the section forms of water coning at different time can be determined.Also,this paper presents the comparison of computed and real results from two cases,with less than5%of predicted error in water-breakthrough time.
出处
《新疆石油地质》
CAS
CSCD
2003年第6期572-573,共2页
Xinjiang Petroleum Geology
关键词
底水油藏
渗流模型
水锥
水淹
预测
bottom-water reservoir
water coning
simulation
water-breakthrough time
prediction
