Stratigraphic evolution and depositional mechanisms of deep-marine silicilastic rocks

深海硅质岩地层演化及沉积机制

• 批准号: 121388-2010
• 负责人: Arnott, Robert(Bill)
• 金额: $ 3.13万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=522128
• 关键词: Stratigraphic; evolution; depositional; mechanisms; deep

With the rising cost of petroleum, producers and consumers alike are hoping that future oil prices remain at a reasonable, affordable level. For producers this requires maintaining the current volume of production, which in turn requires replacing production with new reserves. Presently, however, the new "elephant" fields (i.e. those capable of high-volume conventional oil and gas production) occur in deep-marine turbidite systems situated in very deep water, commonly more than 2500 m, off modern continental margins, like the eastern and northern coasts of Canada. In these areas exploration and production costs are extreme, and as a consequence necessitates careful economic consideration and concern. In order to make these reserves economic, companies must increase their chance of success and the volumetric output from each well. The variable that most impacts these economically significant parameters is the geological framework and how it controls reservoir occurrence and performance. A detailed understanding of reservoir architecture and performance, however, requires and understanding of sub-seismic-scale features, which therefore requires field-based outcrop and experimental investigation. Based on the Neoproterozoic Windermere Supergroup, part of this research will study the facies composition and stratal geometry of a deep-marine basin floor to slope siliciclastic succession. In addition, a companion experimental program will investigate the influence of sediment concentration on the characteristics of deposition from the very flows that build-up the deep-marine sedimentary record.

随着石油成本不断上涨，生产商和消费者都希望未来油价保持在合理、可承受的水平。对于生产商来说，这需要维持当前的产量，而这又需要用新的储备来替代生产。然而，目前，新的“大象”油田（即能够大量生产常规石油和天然气的油田）出现在位于非常深的水域（通常超过 2500 m）的深海浊积岩系统中，远离现代大陆边缘，例如加拿大的东部和北部海岸。在这些地区，勘探和生产成本极高，因此需要仔细的经济考虑和关注。为了使这些储量具有经济效益，公司必须增加成功的机会和每口井的产量。对这些具有经济意义的参数影响最大的变量是地质框架及其控制油藏产状和动态的方式。然而，对储层结构和性能的详细了解需要对亚地震尺度特征的了解，因此需要基于现场的露头和实验研究。以新元古代温德米尔超群为基础，本研究的一部分将研究深海盆地底部到斜坡硅质碎屑层序的相组成和地层几何形状。此外，一个配套的实验计划将研究沉积物浓度对形成深海沉积记录的流动的沉积特征的影响。