稠油油藏溶剂辅助蒸汽驱前缘预测模型

发布时间：2018-04-01 13:10

  本文选题：溶剂辅助蒸汽驱　切入点：注蒸汽　出处：《中国石油大学学报(自然科学版)》2017年01期

【摘要】：为了描述注溶剂条件下蒸汽前缘的形状,首先提出蒸汽前缘气相内组分平衡状态计算方法,获得边界温度特征;其次列出前缘液相组分组成的计算过程,建立考虑三相平衡状态的蒸汽前缘形状预测模型;最后采用迭代法获得界面关键参数,并求解整个模型。结果表明:溶剂辅助蒸汽前缘形状以楔形为主,并且在较低注汽速度情况下,重质溶剂改善垂向波及系数效果明显优于轻质溶剂,对于较高注汽速度,轻质溶剂改善重力超覆现象的潜力明显大于重质溶剂。
[Abstract]:In order to describe the shape of the front edge of steam under solvent injection, a method for calculating the equilibrium state of the components in the vapor phase of the front edge of the steam is proposed, and the boundary temperature characteristics are obtained, and the calculation process of the composition of the composition of the liquid phase in the front edge is listed. The prediction model of steam leading edge shape considering three-phase equilibrium state is established. Finally, the key parameters of the interface are obtained by iterative method, and the whole model is solved. The results show that the solvent assisted steam leading edge shape is mainly wedge-shaped. In the case of low steam injection rate, the effect of heavy solvent on improving vertical sweep coefficient is obviously better than that of light solvent. For higher steam injection rate, the potential of light solvent to improve gravity overlying phenomenon is obviously greater than that of heavy solvent.
【作者单位】： 中国石油大学石油工程学院;中国石油大学石油天然气教育部重点实验室;中国石油勘探开发研究院;
【基金】：国家重大专项(2016ZX05012-005-004,2016ZX05025-004-002)
【分类号】：TE345;TE357.44
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本文编号：1695711