油气藏评价与开发 >
2020 , Vol. 10 >Issue 5: 114 - 119
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2020.05.017
火驱阶段特征对比与分析
收稿日期: 2019-05-24
网络出版日期: 2020-09-24
基金资助
国家自然科学基金“基于燃料沉积演化机制的火烧油层启动与控制”(51674198);国家自然科学基金“基于边界元方法的致密油藏体积压裂水平井多尺度、多机理耦合流动模型研究”(51804258)
Comparison and analysis of stage feature of in situ combustion
Received date: 2019-05-24
Online published: 2020-09-24
燃烧阶段的划分对火驱有着重要的意义,可以指导现场的生产设计与调控。而以往燃烧阶段划分方法的阶段特征较为片面,没有考虑到多方面因素,其参数指标的适用性不强。为了得到更全面的火驱燃烧阶段划分及驱油特征,通过一维燃烧管实验、数值模拟与火驱现场实例的对比分析,研究了不同火驱的阶段特点,并将不同火驱过程中的生产动态、燃烧前缘推进特征进行对比论证,从中选取了生产井的产量增加倍数、含水率、空气油比、氧气含量、燃烧前缘推进速度等10个参数进行阶段性分析,得到阶段性特征,并将其作为阶段划分对比的指标,将富氧燃烧火驱、常规火驱分为4个阶段,蒸汽吞吐后火驱分为5个阶段,并建立了较为完善的燃烧阶段划分的参考标准,为现场生产提供参考。
蒋海岩 , 李晓倩 , 高成国 , 任宗孝 , 袁士宝 . 火驱阶段特征对比与分析[J]. 油气藏评价与开发, 2020 , 10(5) : 114 -119 . DOI: 10.13809/j.cnki.cn32-1825/te.2020.05.017
The division of combustion stage is significance to fire drive, which can guide the production design and control in site. However, the characteristics of the previous combustion stage division methods are one-sided without considering many factors, and the applicability of its parameter index is not strong. In order to obtain a more comprehensive combustion phase division and oil displacement characteristic of in situ combustion（ISC）, the characteristics of different fire drive stages are studied by the experiment of one-dimensional combustion tube and the comparison of numerical simulation and field example of ISC. Meanwhile, the production dynamics and the characteristics of combustion front propulsion in the process of in situ combustion are compared and analyzed. 10 parameters, such as yield increase multiple, water cut, air/oil ratio, oxygen content of production well, and combustion leading edge propulsion velocity, are selected for the stage analysis to obtain the stage characteristics, which is used as the index of stage division and contrast. The conventional fire drive is divided into four stages, while the fire drive after steam huff and puff is divided into five stages. The reference standard for the division of combustion stage is established, guiding the on-site production.
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