天津科技 ›› 2023, Vol. 50 ›› Issue (Z): 44-47.

• 应用技术 • 上一篇    下一篇

稠油热采防砂封隔器的研制及应用

张伦, 倪涛, 徐凤祥, 张文博, 李江   

  1. 中海油服油田生产事业部完井中心 天津 300459
  • 收稿日期:2023-09-22 出版日期:2023-12-06 发布日期:2023-12-27

Development and Application of Sand Control Packer for Heavy Oil Thermal Recovery

ZHANG Lun, NI Tao, XU Fengxiang, ZHANG Wenbo, LI Jiang   

  1. Well Completion Center of COSL Production Optimization,Tianjin 300459,China
  • Received:2023-09-22 Online:2023-12-06 Published:2023-12-27

摘要: 渤海油田稠油油藏占比达50%以上,然而由于稠油本身黏度大、开采难度大,通常做法是往井筒中注入高温高压蒸汽来降低稠油黏度,这就要求蒸汽到达油藏后热损失小,而且稠油油藏埋藏浅,储层胶结疏松易出砂、高温吞吐加剧出砂,常规封隔器不能满足稠油热采所需的长效密封要求。为了解决业内这一世界级难题,结合稠油开发开采现状,通过结构设计、有限元理论分析及室内测试,研制成功了耐冷热交变八轮次的稠油热采防砂封隔器,测试结果表明,其能够满足油田稠油开发开采对热采长效防砂工具的苛刻性能需求。目前,研究成果已经在现场成功应用,对于稠油油田的规模化开采及渤海油田上产4 000万t意义重大。

关键词: 稠油热采, 防砂封隔器, 胶筒组合, 冷热交变

Abstract: The heavy oil reservoirs in Bohai Oilfield account for more than 50% of the total. However,the viscosity of the heavy oil itself is high and it is difficult to recover. The usual practice is to inject high temperature and high pressure steam into the wellbore to reduce the viscosity of the heavy oil,which requires minimal heat loss after steam reaches the reservoir. Moreover,the heavy oil reservoir is shallow,the reservoir cementation is loose and sand production is easy,and the high temperature huff and puff aggravates the sand production,conventional packers cannot meet the strict requirements of long-term sealing required for heavy oil thermal recovery. In order to solve this world-class problem in the industry,based on the current situation of heavy oil development and exploitation,through structural design,finite element theory analysis and indoor testing,this paper has successfully developed a heavy oil thermal recovery sand control packer that can withstand eight cycles of cold and hot alternation. The results show that it can meet the demanding performance requirements of heavy oil development and exploitation for thermal recovery long-term sand control tools. At present,the research results have been successfully applied in the field,which is of great significance for the large-scale exploitation of heavy oil fields and the production of 40 million tons in Bohai Oilfield.

Key words: heavy oil thermal recovery, sand control packer, rubber cylinder combination, alternating hot and cold

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