新疆石油地质

新疆石油地质 ›› 2011, Vol. 32 ›› Issue (2): 147-149.

• 油藏工程 • 上一篇    下一篇

双水平井蒸汽辅助重力泄油生产井控制机理与应用

钱根宝1, 马德胜2, 任香1, 孙新革1, 席长丰2   

  1. 1.中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依 83400;
    2.中国石油勘探开发研究院,北京 100083
  • 收稿日期:2010-10-28 发布日期:2020-08-11
  • 作者简介:钱根宝（1960-）,男,江西新余人,教授级高级工程师,油气田开发,（E-mail）qiangb@petrochina.com.cn.
  • 基金资助:
    中石油科技部“十一五”后三年科技攻关项目（2008B-1002）

Production Well Control Mechanism of Pair of Horizontal Wells by SAGD Process with Application

QIAN Gen-bao1, MA De-sheng2, REN Xiang1, SUN Xin-ge1, XI Chang-feng2   

  1. 1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
  • Received:2010-10-28 Published:2020-08-11

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摘要： 结合现场监测资料和解析方法,对双水平井蒸汽辅助重力泄油（SAGD）开采的机理进行了研究。分析表明,在蒸汽腔中,流动以重力泄油为主,压力梯度较低;在注汽井和采油井间汽液界面下的流体流动规律与蒸汽腔中靠重力泄流为主不同,汽液界面下的流动以注汽井和采油井间的压力驱替为主,压力梯度相对较高。在认识采油井压力梯度分布的基础上,运用离散化井筒模型对采油井的汽阻温度（sub-cool）控制进行了优化,并与现场分析结果进行了对比。结果表明,双水平井蒸汽辅助重力泄油采油井的汽阻温度控制在10~15℃为宜。

关键词: 蒸汽辅助重力泄油, 水平井, 蒸汽腔, 汽液界面

Abstract: Production mechanism of pair of horizontal wells by steam-assisted gravity drainage (SAGD) process is studied from the monitoring data and analytical method. Analysis shows that the fluid in steam chamber flows mainly by gravity drainage with low pressure gradient. The fluid flow below the steam-liquid interface between the steam injection well and production well is dominated by pressure drive, different from the gravity drainage in the steam chamber, with relatively high pressure gradient. Sub-cool control is optimized using discretization wellbore model based on the understanding of pressure gradient distribution of production well. The result indicates that sub-cool control ranging from 10℃ to 15℃ is consistent with the field analysis results.

Key words: SAGD, horizontal well, steam chamber, steam-liquid interface, heavy oil

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