带隔板底水油藏油井射孔井段的确定方法

研究了带隔板底水油藏油井的射孔井段确定问题并提出了最佳射开程度的确定方法。 在底水油藏存在的诸多隔板中.凡是临界产量高、油井产量也高的隔板应予以保护和利用:临界产量高油井产量低或临界产量低油井产量高的隔板可以射开。按照隔板分布进行射孔的油井不仅产量高而且见水时间大大延迟。带有隔板的底水油藏不仅具有天然能量相对充足的优点同时也克服了无隔板底水油藏无水采油期短的缺点。

Determination of Perforation Intervals of Wells in Bottom-Water Reservoirs with Barriers

Determination of perforation intervals and optimal shot density of wells in bottom-water reservoirs with barriers is studied and presented.The study shows that barriers with both high critical rates and high production rates existed in bottom-water reservoirs are generally protected or retained,while those with high critical rates and low production rates or low critical rates and high production rates should be perforated.The wells perforated by distribution of the barriers appear in higher production rates and postpone the breakthrough time of bottom-water on a large scale.Bottom-water reservoirs with barriers display abundant natural drive energy in development and overcome the drawbacks of short water-free oil production period in bottom-water reservoirs without barriers.