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注高矿化度地层盐水获得的原油采收率,比注淡水获得的原油采收率高,这是盐水驱油的优越性。利用油水重力分异和液柱回压的抑制平衡作用,控制水线向上倾方向均匀推进,使油井见效快,而见水和含水上升慢,这是陡构造油藏进行边缘注水的适应性。本文根据室内盐水驱油实验和江汉断块油田边缘注水开发的实践,进行了分析论证,并提出对多盐陡构造油藏合理开发和科学治理的对策。
Note that the recovery rate of crude oil obtained from high salinity formation brine is higher than that obtained from freshwater injection, which is the superiority of brine flooding. The use of oil-water gravity differential and liquid column backpressure inhibition balance the role of uniform control of the water line to the direction of the dip, so that wells see the quick, but see water and water rise slowly, which is steep tectonic reservoir edge water adaptability. Based on the experiment of indoor salt water flooding and the practice of waterflooding at the edge of Jianghan fault block, this paper analyzes and proves that the rational development and scientific management of multi-salt and steep tectonic reservoirs are proposed.