摘要
随着钻井技术的快速发展,水平井成为开发边底水油藏的常规方法。相对于普通直井来说,水平井能在较低的生产压差下获得更大的产量。但水平井开发边水油藏时油水渗流规律复杂,求解三维渗流下的产能难度大。将水平井抽象为无限导流线汇,先用傅立叶变换求得点汇条件下问题的解,然后根据叠加原理求得三维线汇解。将计算结果与现场实际生产数据对比发现,此方法比Joshi的二维产能公式更贴近现场生产实际。由此证明此方法简单可行,可用于现场的水平井产能预测。
With the improvement of drilling technology, the the bottom water and edge water drive reservoirs. Compared horizontal wells have been broadly used to develop with the vertical well, the horizontal well can get more oil at the same schedule. But it is very difficult to get the 3-D flow solution of a horizontal well in an edge water drive reservoir. Based on the hypothesis of the horizontal well located in the center of a circular bounded reservoir with top and bottom sealed boundaries, a procedure to evaluate the productivity of the horizontal well is presented by means of the principle of superposition and Fourier transform to the system. Compared with the 2- D Joshi productivity formula, it is more close to the factual horizontal well productivity in the oil field. Results from the paper can be used to calculate the horizontal well productivity.
出处
《现代地质》
CAS
CSCD
北大核心
2007年第1期141-144,共4页
Geoscience
关键词
边水油藏
圆形油藏
水平井产能
傅立叶变换
叠加原理
edge wate drive reservoir
circular bounded reservoir
horizontal well productivity
Fourier transform
principle of superposition
