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中文摘要：
为减缓原油产量递减速度、控制无效注水量,要对老井实施大量的增油降水措施。在实施某种措施时,除了要研究其技术可行性外,还应研究采取该措施后经济上是否合理。采用盈亏平衡与油藏工程相结合的分析方法,给出了油井堵水措施经济界限,并根据D油田P地区高含水期老井开发特点,对其不同油价下堵水降水量与增油量进行了一定的研究。
英文摘要：
Many measures of increasing oil mass and decreasing quantity of water are implemented to old well in order to slow down oil production decline and control ineffective water injection and production. When some measure is implemented,it not only considers feasibility of technique,but also guarantees that this measure is advisable in the angle of economic.The economic limits of measure of water plugging was researched by using the method of combining the theory balancing the gain and loss and the analysis of the oil reservoir engineering. Based on development characteristics of old well of high water cut stage in the P block of D oilfield,the quantity of water plugging and increased oil production are studied under the condition of different oil price.
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