高凝油油藏剩余油分布规律研究

发布时间：2018-06-04 15:13

本文选题：流线模拟 + 配置关系　；参考：《特种油气藏》2016年02期

【摘要】：针对常规地质统计技术及网格粗化近似技术在油藏剩余油饱和度求取过程中存在较大误差的问题,优选性能稳、算速快以及无网格定向效应的流线数值模拟方法,利用水驱开发油藏三维流线模型研究工区流线分布与剩余油配置关系。由研究结果可知,流线推进特征时间同层系调整时间吻合,小层剩余油分布与水线推进规律匹配,井组剩余油分布同沉积、断层以及温度等多因素协同作用相关。为此,建议进一步完善工区注采井网系统,并考虑在局部井组采用针对性的热水、蒸汽驱替,克服原油温敏效应,以提高采收率。通过研究,明确出油及来水方向,找到当前注采流线未能波及的剩余油富集潜力区,为下一步调整井网挖掘剩余油指明了方向。
[Abstract]:In order to solve the problem of large error in the calculation of remaining oil saturation in reservoir by conventional geostatistical technique and mesh coarsening approximation technique, the streamline numerical simulation method with stable optimal selection performance, fast calculation speed and no mesh orientation effect is proposed. The relationship between the distribution of streamline and the remaining oil distribution is studied by using the three dimensional streamline model of water drive development reservoir. The results show that the characteristics of streamline propulsion are consistent with the adjustment time of the same system, the distribution of residual oil in small layers is matched with the advancing rule of waterline, the remaining oil distribution of well group is codeposited, the fault and temperature are related with each other. Therefore, it is suggested that the system of injection-production well pattern should be further improved, and that the appropriate hot water and steam displacement should be used in the local well group to overcome the temperature sensitive effect of crude oil, so as to improve the recovery efficiency. Through the research, the direction of oil production and water coming is determined, and the potential area of remaining oil enrichment which cannot be swept by the current injection-production streamline is found, which indicates the direction of mining remaining oil in the next step of adjusting well pattern.
【作者单位】：中国地质大学;
【基金】：国家科技重大专项“大型油气田及煤层气开发”之“复杂油藏剩余油分布预测”(2011ZX05009-003-03) 中国石油天然气股份有限公司重大科技项目“沈84-安12块高凝油油藏提高采收率研究”(QW08037005-3)
【分类号】：TE327

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