垂直井开采厚油层的正交分析研究

The Study of Orthogonal Analysis of the Recovery in Thick Formation by Vertical Well

目的：探寻垂直井开采厚油层最终采收率随各影响因素的变化趋势。方法：利用正交试验设计技术，对数模结果进行直观分析和方差分析，排列出各因素对最终采收率影响效果主次顺序，最后根据模拟方案计算结果进行多元回归。结果：得到计算最终采收率的多元相关公式。结论：在生产、地质、流体参数已知的条件下，可定量确定厚油层最终采收率，为后期挖潜奠定基础。

By using the orthogonal analysis, this paper provides visual analysis and variance analysis of the results from numerical simulation. The variation of final recovery efficiency with some factors is studied. lt is concluded that, in definite scope, the curve illustrating the influence of these factors to the final recovery efficien-cy is approximately power and exponential curve. The priority of these factors on the influence of the final recov-ery efficiency is given. Then regression analysis of the results from numerical simulation is presented and the for-mula to calculate final recovery rate is given. When some parameters about geology and production are given, the final recovery rate of thick layer can be calculated quantitatively so as to provide the proof for potential improve-ment.