大庆油田葡萄花油层地层压力评价方法

Formation pressure evaluation method of Putaohua reservoir in Daqing Oilfield

针对原"松Ⅰ法"不能准确评价各区块的平均地层压力,特别是中低渗油田区块出现不适应原"松Ⅰ法"的问题,采用"A"试井软件平台,对近五年来葡萄花油层偏心测压资料进行解释分析,将分析结果和原压力评价结果进行对比,并结合长关井实验结果,综合分析各种压力之间的关系及推荐的采用压力和注采比的关系,得到适合大庆油田葡萄花油层压力新的评价方法。新方法能够对油藏进行更准确的压力评价,为油田开发提供科学依据。

The original "Song Ⅰ method" cannot accurately evaluate the average formation pressure of each block, especially the original "Song Ⅰ method" is not suitable for low and medium permeability oilfield blocks. Using "A" well testing software platform, the eccentric pressure measurement data of Putaohua reservoir in recent five years are interpreted and analyzed, and the analysis results are compared with the original pressure evaluation results. Combined with the results of long shut in test, the relationship between various pressures and the recommended relationship between pressure and injection production ratio is analyzed, and a new pressure evaluation method suitable for Putaohua reservoir in Daqing Oilfield is obtained. The new method can evaluate reservoir pressure more accurately and provide scientific basis for oilfield development.