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文明寨油田是一个极复杂的断块油田。受地质构造及长期注水开发的影响 ,进入高含水期后 ,堵水措施面临的困难逐年增大。从文明寨油田的地质特点入手 ,分析了高含水期堵水存在的主要问题 :受构造影响 ,动态分析找水难度大 ;生产井段长 ,层间矛盾大 ;事故井多 ,堵水工作难以正常进行 ;负压严重 ,化堵有效期短等。介绍了1999年以来为提高堵水效果而采取的系列做法和成功的经验 ,评价了现场实施效果 ,对极复杂断块油田高含水期提高堵水效果具有一定指导意义。
Wenmingzhai Oilfield is a very complex fault block oil field. Affected by geological structure and long-term water injection development, the difficulties in water blockage measures have been increasing year by year since entering the high water cut period. Based on the geological characteristics of Wenmingzhai Oilfield, the main problems of water blockage in high water cut period are analyzed. Due to the influence of tectonics, it is very difficult to find water by dynamic analysis. The length of production well is long and there is a large contradiction between layers. Normal; serious negative pressure, blocking the effective period is short. The series of practices and successful experiences adopted since 1999 to improve the effect of water plugging are reviewed. The effect of on-site implementation is evaluated, which is of guiding significance for improving the water plugging effect during the high water cut period of extremely complex fault block oilfields.