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塔里木盆地塔河油田已经发现的储量中,88%储藏在奥陶系碳酸盐岩储集层中,其储集空间是相互不连接的与连接的网状溶岩内的孔隙。奥陶系储集层内不同位置的油、气、水特征明显,油田内没有统一的油/水界面,更增加了油气藏的复杂性。经过酸化压裂处理后,获得高产及商业油流的井可达总井数的75.9%。酸化压裂是塔河油田改善储集层内连通性、改造非生产井、提高产量的重要手段,也是其它具有类似储集层油田开发的基本方法。
Of the reserves that have been found in the Tahe oilfield in the Tarim Basin, 88% of the reserves are stored in Ordovician carbonate reservoirs, which have voids within the interconnected reticular lavas that are not connected to each other. The characteristics of oil, gas and water in different positions in the Ordovician reservoir are obvious. There is no uniform oil / water interface in the oilfield, which adds to the complexity of the reservoir. After acid fracturing, up to 75.9% of the total wells were obtained with high productivity and commercial oil flow. Acid fracturing is an important means to improve connectivity in the reservoir, transform non-production wells and increase production in Tahe Oilfield. It is also the basic method for other oilfield development with similar reservoirs.