Abstract: It has been observed from the production practice in Daqing, Yumen and Dagang oil fields that in the process of waterflooding in sandstone oil pools, the injected water generally advances more rapidly in the same direction as the trend of deposition of the sandstone than against it, and wide discrepancies exist in the state of exploitation of wells in the different directions. This is because most of the pay zones in these oil fields are channel sandstone deposits. On the basis of the process and character of deposition of channel sandstones and after studying the characteristics of the movement of oil and water in such sandstones, the author brings forth his view on "oil displacement in the reverse direction", making the fullest use of the favourable effect of the mechanism to increase the efficiency of exoloitina such oil pools.

摘要： 根据大庆、玉门、大港等油田对油田生产实际资料的观察,发现砂岩油藏在注水开发过程中普遍存在着注入水顺砂岩体沉积方向推进速度快,逆沉积方向推进速度慢的现象,而且不同方向的油井开采状况相差相当悬殊。其所以产生这种现象,是因为这些油田油层多数是河道砂岩体沉积。本文初步分析了河道砂岩体的沉积过程和特征,研究了油水在河道砂岩体中运动的特点和规律,并提出“逆向驱油”的见解,要充分发挥逆向驱油(即逆古河流沉积方向注水驱油)的有利作用,以改善河道砂岩体油藏的开发效果。

关键词: 河道砂岩体, 初步探讨, 驱油试验, 开发效果, 油田开发, 生产井排, 不同方向, 驱油效果, 逆向, 水线推进速度