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Water is the water injection development oilfield faces a serious problem. Long-term waterflooding development of oilfield, because of the reservoir plane and longitudinal heterogeneity, oil/water viscosity differences and imbalance within the oil and water well group, is bound to cause injected water along the high permeability zone producing Wells up into, resulting in the inefficient injection water circulation, which not only greatly affect the crude oil recovery degree, but also due to the consumption of energy, produced fluid processing, pipeline corrosion, greatly increase the production cost and environment pollution. Therefore, people use all kinds of technology to reduce water cut, which adjust the injection profile as a good effect, low cost of technology. This paper takes changqing pan gu liang oilfield as the research object, through to the fractured reservoir of deep profile control, to choose well layer optimization technology and micro fracture profile control system research. On the basis of comprehensive geologic study, the use of chemical oil displacement technique for reservoir management, and chemical oil displacement to improve water absorbing conditions have prominent effect, increased the absorbing water thickness, improve the efficiency of water flooding, the oil increase effect is obvious, has paved the way for the reservoir production.
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