Development of geochemical approaches to monitor the fate, transport, and retention of CO2 in steam-assisted gravity drainage reservoirs in the Canadian oil sands

开发地球化学方法来监测加拿大油砂蒸汽辅助重力泄油储层中二氧化碳的归宿、传输和保留

• 批准号: 518200-2017
• 负责人: Mundle, Scott
• 金额: $ 1.82万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640190
• 关键词: Development; geochemical; approaches; monitor; fate

Suncor Energy is a global leader in the recovery of bitumen from the Canadian oil sands using Steam AssistedGravity Drainage (SAGD) technology. Steam injection techniques are effective for oil extraction from bitumen;however, the process is energy intensive as relatively high steam to oil ratios (SOR) are still regarded as verygood in the Athabasca oil sands (less than 3 m3/m3). Technological advancements that decrease SOR wouldlead to significant cost savings in oil recovery, reductions in energy use, and decreases in greenhouse gasemissions (GHGs). Limited information is available on the impacts of CO2 on bitumen recovery. CO2concentrations are impacted by natural production of CO2 as a result of the SAGD process. Multiple CO2sources complicate the quantification and identification of the fate, transport, and retention of CO2 in a SAGDreservoir. The proposal seeks to develop geochemical techniques to achieve a more complete understanding ofthe volumes and migration pathways of CO2 in the reservoir, a key parameter needed to accurately assess theimpacts of CO2 on bitumen recovery, energy use, and GHG emissions.

森科尔能源公司是采用蒸汽辅助重力泄油（SAGD）技术从加拿大油砂中回收沥青的全球领导者。蒸汽注入技术对于从沥青中提取油是有效的;然而，该过程是能量密集型的，因为相对高的蒸汽与油的比率（SOR）在阿萨巴斯卡油砂中仍然被认为是非常好的（小于3 m3/m3）。降低SOR的技术进步将导致石油开采的显着成本节约，减少能源使用，并减少温室气体排放（GHG）。关于CO2对沥青回收的影响，可获得的信息有限。CO2浓度受SAGD过程中CO2自然生成的影响。多种CO2源使得SAGD储层中CO2的去向、运移和滞留的定量和识别变得复杂。该提案旨在开发地球化学技术，以更全面地了解储层中CO2的体积和迁移途径，这是准确评估CO2对沥青回收、能源使用和GHG排放影响所需的关键参数。