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简要分析了周期注水改善注水开发效果的作用机理及影响因素,给出了周期注水的适用条件和评价注水油田转为周期注水的可行性计算公式;渗透率越小周期注水的周期越长、油层越不均质、毛管力适中时、垂直渗透率与水平渗透率之比为0.5时,周期注水能达到最好的效果;应用不对称的短注长采交替工作制度,周期注水的效果最好。
This paper briefly analyzes the mechanism and influencing factors of periodic water injection to improve water injection development effect, and gives the applicable conditions of periodic water injection and the feasibility formula for evaluating water injection into periodic water injection. The smaller the permeability is, the longer the period of water injection, The more homogeneous, the capillary force is moderate, the vertical permeability and horizontal permeability ratio of 0.5, the cycle of water injection to achieve the best results; the application of asymmetric short injection long alternate work system, the best effect of periodic injection .