底水油藏水平井和直井开采对比研究

Comparing Production of Horizontal and Straight Wells Located in Sandstone Reservoir with Bottom Water

利用油藏数值模拟方法对底水油藏应用水平井及直井开采技术效果进行了对比研究，分析了采油速度、布井方式及垂直渗透率与水平渗透率比值（Ｋｖ／Ｋｈ）对开发效果的影响。结果表明，水平井开发底水油藏的效果远远优于直井。水平井在平面上的布局，在低采油速度下对开采效果影响较大，而在高采油速度下则影响不明显。地层的Ｋｖ／Ｋｈ值对水平井开采效果影响明显。

The production of horizontal and straight wells located in a sandstone reservoir with bottom water is studied by means of reservoir simulator Production rate , well pattern and ratio of vertical permeability to horizontal one are accounted in the process of study The results obtained indicate that the horizontal wells have their superiority beyond comparison in the development of sandstone reservoir with bottom water, the pattern of horizontal well has a large effect on the production performance at low production rate and little effect on it at high production rate And ratio of vertical permeability to horizontal has a significant effect