海上三角洲相油田剩余油控制因素及挖潜——以渤海湾盆地JZ油田为例

Remaining oil control factors and potential digging in offshore delta oilfield: taking JZ Oilfield in Bohai Bay Basin as an example

颜冠山 刘宗宾 宋洪亮 韩雪芳 王欣然

中海石油（中国）有限公司天津分公司渤海石油研究院，天津　300459

Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Limited, Tianjin 300459, China

文中以开发中、后期的海上典型三角洲相油田JZ油田为例，研究了各类地质因素及其与工程因素的耦合性对剩余油的控制作用。对单砂体之间及内部的渗流屏障、低级序的小断层、正向微构造、油层未射孔等因素影响下的剩余油分布特征进行了深入分析。结合JZ油田多年的生产动态资料，总结了该类油田层间干扰型、顶部富集型、砂体差异型、平面动用差异型4种主要剩余油分布模式，并根据目前油田的挖潜效果，对不同分布类型的剩余油提出了相应的挖潜策略。研究明确了此类油田剩余油的分布特征及下一步剩余油挖潜的方向。

Taking the JZ Oilfield in the typical offshore delta at the middle-late stages of development as an example, this paper studies the geological factors and engineering factors that control the residual oil. The residual oil distribution characteristics under the influence of factors such as the percolation barrier between the single sand bodies and the interior, the small faults of the lower order, the positive micro-structures, and the imperforated oil layers, were analyzed in detail. Combined with years of production dynamics of JZ Oilfield, the four main remaining oil distribution patterns of interlayer interference type, top enrichment type, sand body differential type and plane application differential type are summarized, and the corresponding potential strategy for different types of remaining oil is put forward. Through this study, the distribution of residual oil and the digging direction of the remaining oil in this kind of oilfield are clarified.

10.6056/dkyqt201805011