断层物理模拟实验及其在河南新庄油田断层封闭性评价中的应用

河南新庄油田核桃园组第二、第三段为复杂小断块稠油藏,部分断层的封闭性在蒸汽吞吐生产过程中变差,影响了开发效果.应用全直径岩心建立了断层物理模型,并进行岩心流动实验,以BQ57区为例应用于断层封闭性评价中.结果表明,该井区距生产井40 m的断层在蒸汽吞吐过程中封闭性较好.断层物理模拟实验研究成果与数值模拟研究成果及生产动态资料吻合较好.该研究成果对油田开发方案的调整和改善开发效果提供了可靠依据,同时也有助于国内外同类油藏进行蒸汽吞吐开采时的断层封闭性研究.

Fault physical modeling experiment and its application in the assessment of fault sealing of Xinzhuang oilfield,Henan,China

The second and third members of the Hetaoyuan Formation in the Xinzhuang oilfield are complex small fault block reservoirs.Some faults' sealing became poor in the process of steam stimulation production.This had bad effects on the oil production.In this paper,the whole core samples are used to build fault physical models.These models are used in the core flow experiments and the assessment of fault sealing in BQ57 well field in further research.The results show that the fault sealing would be high in the process of steam stimulation when the distance between the fault and the production well at the pay zone is no less than 40 m.The final results of the experiments are proved to be good by the numerical simulation research results and the production performance data.These results are helpful to adjust reservoir development plans and make good effects for the oil production.Meanwhile,they are useful for the fault sealing research in the steam stimulation process in similar reservoirs at home and abroad.