Reconfiguring In-Situ Thermal Oil Recovery facilities for Steam Assisted Geothermal Power (SAGP) Extraction

重新配置蒸汽辅助地热发电 (SAGP) 开采的原位热油回收设施

• 批准号: 556563-2020
• 负责人: Hemmati, Arman
• 金额: $ 1.53万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=720865
• 关键词: Reconfiguring; Situ; Thermal; Oil; Recovery

Geothermal energy has a great potential to play a growing role to lower the carbon footprint of hydrocarbon energy extraction. However, it is still in its infancy in Canada. Alberta has a natural advantage in developing geothermal energy extraction technologies given its expertise in subsurface technology and geophysics. Furthermore, years of oil recovery by steam injection (e.g., Stream Assisted Gravity Drainage - SAGD) has resulted in the accumulation of substantial amounts of high-temperature (170 degree C) steam underground. This project will develop technologies that takes advantage of this wasted thermal energy for power generation. We refer to the process as Steam Assisted Geothermal Power (SAGP). The final aim of this project, with the support of Imperial Oil, is to develop the first SAGP pilot in Alberta. The proposed technology works based on recommissioning of abandoned enhanced oil recovery wells (e.g., SAGD) with Steam-to-Oil-Ratio of >3 to SAGP operations. It takes advantage and re-purposes existing facilities for oil recovery and the thermal capacity of reservoirs to extract energy. There are 2 technology developments to be completed in this project: (1) Next generation thermal energy harvesting using membranes that generate power and decontaminate waste-water simultaneously; (2) design modifications to subsurface tubing in existing facilities with a lower rate of heat loss limited to a temperature drop of 20 degree C. The proposed technologies will provide a new source of net-zero-carbon energy at relatively low cost.

地热能在降低碳氢化合物能源开采的碳足迹方面具有巨大的潜力，可以发挥越来越大的作用。然而，它在加拿大仍处于起步阶段。鉴于其在地下技术和地球物理学方面的专业知识，阿尔伯塔省在开发地热能提取技术方面具有天然优势。此外，多年通过蒸汽注入（例如流辅助重力排水 - SAGD）采油已导致地下积累了大量高温（170 摄氏度）蒸汽。该项目将开发利用这些浪费的热能发电的技术。我们将该过程称为蒸汽辅助地热发电 (SAGP)。该项目的最终目标是在帝国石油公司的支持下，在艾伯塔省开发第一个 SAGP 试点。该技术的工作原理是对废弃的提高采收率井（例如 SAGD）进行重新调试，SAGP 作业的汽油比 >3。它利用并重新利用现有的石油回收设施和油藏的热容量来提取能源。该项目有两项技术开发需要完成：（1）利用膜进行下一代热能收集，同时发电和净化废水； (2) 对现有设施中的地下管道进行设计修改，将热损失率降低到 20 摄氏度。所提出的技术将以相对较低的成本提供新的净零碳能源。