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采收率是衡量油田开发水平高低的一个重要指标,是指在一定的经济极限内,在现代工艺技术条件下,从油藏中能采出的石油量占地质储量的比率数。油藏开发大体上可分为三个阶段:①利用天然能量开采的一次采油阶段。原油采收率都比较低,只有8%~15%。②利用人工补充地层能量(如注水、注气等)开采的二次采油阶段。经
Oil recovery is a measure of the level of oilfield development is an important indicator refers to within certain economic limits, under the conditions of modern technology, the amount of oil from the reservoir can be recovered as a ratio of the number of geological reserves. The development of reservoirs can be divided into three stages: (1) The first oil recovery stage exploiting natural energy. Oil recovery is relatively low, only 8% to 15%. ② The use of artificial recharge of stratigraphic energy (such as water injection, gas injection, etc.) mining secondary recovery phase. through