双水平井SAGD循环预热连通判断新解析模型

发布时间：2018-06-23 08:34

本文选题：SAGD + 蒸汽　；参考：《西南石油大学学报(自然科学版)》2016年01期

【摘要】：注蒸汽循环预热对转SAGD生产阶段蒸汽腔的上升速度、SAGD上产速度、水平段蒸汽腔的发育程度与动用率、以及SAGD最终采收率等均有重要影响。而SAGD注采井水平段之间的储层温度是评判预热连通是否达到要求、以及合理转SAGD生产的关键参数。针对前人传热解析模型未分别考虑实际储层多孔介质中岩石、原油、地层水传热与热扩散性能等问题,建立了考虑油水岩石的多介质多相流体综合传热解析新模型,并以国内某油区典型SAGD井组为例,利用井下测温数据、油水岩石热物性参数等为数据,进行了SAGD注蒸汽循环预热阶段注采井水平段之间温度变化测算,并与数值模拟计算结果进行了对比,计算结果表明,提出的新型解析模型与数值模拟结果符合率达到了95%以上,可方便快捷对预热连通情况进行速判,对现场SAGD成功实施具有重要意义。
[Abstract]:The preheating of steam injection cycle has an important influence on the rising rate of steam chamber and the production rate of horizontal steam chamber and the final recovery factor of SAGD in the production stage of SAGD. The reservoir temperature between the horizontal section of SAGD injection-production wells is the key parameter to judge whether the preheating connectivity meets the requirements and to transfer the production of SAGD reasonably. In view of the problems of heat transfer and thermal diffusion in porous media, such as rock, crude oil, formation water, etc., a new analytical model for heat transfer of multiphase fluid in oil and water is established. Taking the typical SAGD well group in a domestic oil area as an example, the temperature change between the horizontal section of the injection and production wells in the preheating stage of the steam injection cycle of SAGD is measured by using the downhole temperature measurement data and the petrophysical parameters of the oil-water rock as the data. Compared with the numerical simulation results, the calculated results show that the coincidence rate of the new analytical model and the numerical simulation results is more than 95%, and it is convenient and quick to judge the preheated connectivity. It is of great significance to the successful implementation of the field SAGD.
【作者单位】：中国石油勘探开发研究院;"提高石油采收率"国家重点实验室.中国石油勘探开发研究院;中国石油新疆油田公司勘探开发研究院;
【基金】：国家科技重大专项(2011ZX05012) 中国石油天然气股份有限公司重大科技项目(2013B-14)
【分类号】：TE357.7

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