绥中油田各项措施增油效果劈分方法

发布时间：2018-05-02 04:55

本文选题：聚合物驱试验 + 整体提液　；参考：《油气地质与采收率》2017年02期

【摘要】：绥中油田为海上重质稠油油田,地面原油密度为0.958~0.982 g/cm~3,地层原油粘度为50~250 m Pa·s。为了缓解注入水突进、改善区块开发效果和提高采收率,2003年在油田进行聚合物驱试验;2010年在注聚合物高含水井区实施整体提液措施,2013年开始进行细分层系试验开发。随着各项增产措施的交叉实施,难以确定每项措施的增油效果。利用类比法对聚合物驱增产效果进行评价,采用相对渗透率曲线和物质平衡原理推导出新型含水率预测模型,通过对比预测含水率曲线与实际含水率曲线,确定曲线的拐点即为各项措施的见效时间,曲线的差值即为各项措施的增油量。通过动态法和数值模拟法分别计算各项措施的累积增油量,实现对聚合物驱、整体提液、细分层系等措施增油效果的劈分。研究结果表明,截至2015年底,绥中油田聚合物驱、整体提液和细分层系的措施累积增油量分别为264.3×10~4,97.1×10~4和12.6×10~4m~3。
[Abstract]:Suizhong Oilfield is an offshore heavy oil field with a surface oil density of 0.958 ~ 0.982 g / cm ~ (-3) and a viscosity of 50 ~ 250 MPA 路s ~ (-1). In order to alleviate injection water burst, improve block development effect and enhance oil recovery, polymer flooding test was conducted in oil field in 2003, and integrated liquid extraction measures were implemented in high water-cut well area with polymer injection in 2010, and subdivision series test development began in 2013. With the cross-implementation of various measures to increase production, it is difficult to determine the effect of each measure. A new water cut prediction model is derived by using the relative permeability curve and the material balance principle. The comparison between the predicted water cut curve and the actual water cut curve is carried out by comparing the predicted water cut curve with the actual water cut curve. The inflexion point of the curve is the effective time of each measure, and the difference of the curve is the increase of oil quantity of each measure. By means of dynamic method and numerical simulation method, the cumulative oil increment of each measure is calculated, and the splitting effect of polymer flooding, whole liquid extraction and subdivision layer system is realized. The results show that, by the end of 2015, the cumulative oil increment of polymer flooding, whole extraction and subdivision in Suizhong Oilfield is 264.3 脳 10 ~ (4) N ~ (97. 1 脳 10 ~ (4) and 12.6 脳 10 ~ (4) m ~ (-1) respectively.
【作者单位】：中海石油(中国)有限公司天津分公司;
【基金】：国家科技重大专项“大型油气田及煤层气开发”(2011ZX05057)
【分类号】：TE357

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