西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

双水平井SAGD 循环预热连通判断新解析

吴永彬1,2 *,李秀峦1,2,赵睿3,周游1,2,郭二鹏1,2   

  1. 1. 中国石油勘探开发研究院,北京海淀100083;2.“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,北京海淀100083;
    3. 中国石油新疆油田公司勘探开发研究院,新疆克拉玛依834000
  • 出版日期:2016-02-01 发布日期:2016-02-01
  • 通讯作者: 吴永彬,E-mail:wuyongbin@petrochina.com.cn
  • 基金资助:

    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)。

A New Analytical Model of Heat Communication Judgment During Heat#br# Circulation Phase of Dual-horizontal SAGD

WU Yongbin1,2*, LI Xiuluan1,2, ZHAO Rui3, ZHOU You1,2, GUO Erpeng1,2   

  1. 1. Research Institute of Petroleum Exploration and Development,PetroChina,Haidian,Beijing 100083,China;
    2. State Key Laboratory of EOR,Research Institute of Petroleum Exploration and Development,Petrochina,Haidian,Beijing 100083,China;
    3. Xinjiang Oilfield Company,Petrochina,Karamay,Xinjiang 834000,China
  • Online:2016-02-01 Published:2016-02-01

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。

关键词: SAGD, 蒸汽, 循环预热, 热连通, 热扩散

Abstract:

The effect of heat circulation by steam injection is of a great importance to the steam chamber growth rate,SAGD
ramp-up rate,steam chamber dimension along horizontal section,tapping efficiency and ultimate recovery factor for SAGD
production. While the temperature of the formation between horizontal sections of injector and producer in a SAGD wellpair
is the crucial parameter to judge whether heat communication between injector and producer is enough or whether it is rational
to convert from circulation to SAGD production phase. According to the problems that the previous analytical model only
considers the thermal properties of the formation rock,the new analytical model of calculating heat communication including
the effect of formation rock,oil and water is established. The field data of well configuration and thermal properties of formation
rock,oil and water from a SAGD production area in China is taken as an example to calculate the temperature change and
distribution during SAGD circulation phase and the results are compared with those from previous model and numerical history
match. The calculation results show that the analytical results from the model proposed in this paper have quite good agreement
(>95%) with the numerical simulation results,which justifies its feasibility and accuracy. The heat communication during
SAGD circulation phase can be determined timely by using this model and it has a significance to guide the SAGD operation
during production phase successfully.

Key words: SAGD, steam, heat circulation, heat communication, heat diffusivity

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