Evaluating the Wettability and EOR Potential of Duvernay and Eagle Ford Samples

评估 Duvernay 和 Eagle Ford 样品的润湿性和 EOR 潜力

• 批准号: 543893-2019
• 负责人: Dehghanpour, Hassan
• 金额: $ 2.77万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development 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=720815
• 关键词: Evaluating; Wettability; EOR; Potential; Duvernay

The increasing global energy demand and decreasing hydrocarbon production from conventional resources have motivated the industry to produce hydrocarbons from unconventional resources. As hydraulic fracturing operations in Canada increase, it is becoming important to enhance the efficiency of these operations. Canada has massive unconventional resources with an estimated 425 billion barrels of shale and tight oil in-place in Alberta alone. Although horizontal drilling and multi-stage hydraulic fracturing have boosted hydrocarbon production, primary oil recovery factors from unconventional resources is very low (5-10% of the original oil in-place). The oil industry needs to apply enhanced oil recovery (EOR) techniques to improve this recovery factor. Surfactant solutions and natural gas have been considered as potential EOR fluids to improve oil recovery factors from unconventional reservoirs The proposed research aims to conduct systematic laboratory experiments for evaluating two different approaches to improve oil recovery factors from unconventional reservoirs. First is adding surfactants to fracturing fluids for EOR while fracturing. Second is cyclic injection of natural gas (Huff-n-Puff) after fracturing operations. One post-doctoral fellow, one PhD student, and one MSc student will conduct the three phases of this research, namely wetttability evaluation, surfactant EOR, and natural gas EOR. These phases involve systematic laboratory experiments on rock and fluid samples from East Duvernay and Eagle Ford Formations which are both carbonate-rich source rocks. The University of Alberta team will collaborate with industry experts in CNOOC International and Outlier Resources to: i) develop optimal formulations for fracturing and EOR fluids scenarios and ii) optimize operational parameters. The research team will acquire critical technical expertise to be well-poised to join the Canadian oil and gas industry, and continue the responsible development of the nation's unconventional oil and gas resources.

全球能源需求的增加和常规资源的烃生产的减少促使工业从非常规资源生产烃。随着加拿大水力压裂作业的增加，提高这些作业的效率变得越来越重要。加拿大拥有大量的非常规资源，仅在阿尔伯塔就有估计4250亿桶页岩和致密油。虽然水平钻井和多级水力压裂提高了油气产量，但非常规资源的一次采油系数非常低（原始石油储量的5-10%）。石油工业需要应用提高石油采收率（EOR）技术来提高这一采收率。表面活性剂溶液和天然气被认为是提高非常规油藏采收率的潜在EOR流体。所提出的研究旨在进行系统的室内实验，以评估两种不同的方法来提高非常规油藏采收率。首先是在压裂时向压裂液中添加表面活性剂以提高采收率。第二种是在压裂作业后循环注入天然气（Huff-n-Puff）。一名博士后研究员，一名博士生和一名硕士生将进行本研究的三个阶段，即润湿性评价，表面活性剂EOR和天然气EOR。这些阶段包括对东Duvernay组和Eagle福特组（均为富碳酸盐烃源岩）的岩石和流体样品进行系统的实验室实验。阿尔伯塔大学团队将与中海油国际和Outlier Resources的行业专家合作，以：i）开发压裂和EOR流体方案的最佳配方，ii）优化操作参数。该研究团队将获得关键的技术专长，以便随时准备加入加拿大石油和天然气行业，并继续负责任地开发该国的非常规石油和天然气资源。