Multiphase Transport in Solid-Liquid and Solid-Gas Flows with Subsea Applications

海底应用中固液和固气流的多相传输

• 批准号: RGPIN-2014-04712
• 负责人: Pope, Kevin
• 金额: $ 1.68万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=566697
• 关键词: Multiphase; Transport; Solid; Liquid; Gas

This research program investigates the thermodynamics and heat transfer of multiphase flows, particularly involving particles and crystals in solid-liquid and solid-gas flows. The primary application area is highly-viscous oil-dominated wellstreams in offshore oil and gas applications, particularly subsea operations. The research will develop new analytical techniques and physiochemical data measurements that enable more accurate prediction and measurement of specific processes of multiphase flows with highly-viscous oil-dominated wellstreams. Several major offshore oil and gas production fields, and new fields recently discovered, provide a significant opportunity for Newfoundland and Labrador. Highly-viscous multiphase flow research is an important field to fully utilize and safely extract these reserves. Offshore oil and gas production and transportation rely heavily on multiphase flow processes. Wellstreams must be extracted from complex reservoirs, consisting of several phases, which are chemically reactive and must be processed in harsh offshore conditions or transported over long distances to onshore processing facilities. New experiments will be conducted and semi-analytical solutions will be developed to improve the knowledge of highly-viscous oil-dominated wellstreams, particularly for subsea applications with a focus on arctic and subarctic conditions. The predictive techniques will be developed for better cost analysis and improved design methodologies to effectively transport un-processed and semi-processed wellstreams. This will provide useful new insight into more efficient and safer tieback systems, thereby widening the reach of a single platform. Improved understanding of the physiochemical characteristics of highly-viscous oil-dominated wellstreams will enable a significant portion of the processing equipment to be moved onshore, which significantly reduces infrastructure and operational costs. Partial-processing of the wellstream will be required on the seafloor, particularly, bulk water/gas removal can significantly reduce the required pumping power by limiting the transport of unnecessary fluids, thus reducing oversized equipment and helping prevent hydrate formation. More complete knowledge of the physiochemical characteristics of immersed particles, phase separation, water/gas removal and other multiphase transport processes can significantly benefit offshore oil and gas production. This research will provide new theoretical insight and experimental data for more effective transport and subsea processing of highly-viscous oil-dominated wellstreams, for more cost effective, safe, reliable and environmentally benign methods of offshore oil recovery. The results of the research will also have useful applications in other multiphase flow technologies, i.e., solid-gas flows in fluidized beds, solid-liquid flows in thermochemical cycles, and slurry transport, among others.

本研究计划研究多相流的热力学和传热，特别是涉及固体-液体和固体-气体流动中的颗粒和晶体。主要应用领域是海上油气应用中以高粘度油为主的井流，特别是海底作业。该研究将开发新的分析技术和物理化学数据测量方法，从而能够更准确地预测和测量以高粘度油为主的多相流的特定过程。几个主要的海上油气生产油田以及最近发现的新油田为纽芬兰和拉布拉多提供了重要的机会。高粘多相流研究是充分利用和安全开采这些储量的重要领域。海上油气生产和运输严重依赖多相流过程。井流必须从复杂的储层中提取，储层由几个阶段组成，这些阶段具有化学反应性，必须在恶劣的海上条件下进行处理，或者长途运输到陆上处理设施。将进行新的实验，并开发半分析解决方案，以提高对高粘度油为主的井流的认识，特别是针对北极和亚北极条件下的海底应用。预测技术将用于更好的成本分析和改进设计方法，以有效地输送未处理和半处理的井流。这将为更高效、更安全的回接系统提供有用的新见解，从而扩大单一平台的覆盖范围。提高对高粘稠油为主的井流的物理化学特性的了解，将使大部分处理设备迁移到陆上，从而显著降低基础设施和运营成本。井流的部分处理将需要在海底进行，特别是大量的水/气去除可以通过限制不必要的流体运输来显著降低所需的泵送功率，从而减少超大设备并有助于防止水合物的形成。更全面地了解浸入颗粒的物理化学特性、相分离、水/气去除和其他多相输送过程，可以显著促进海上油气生产。该研究将为更有效地运输和海底处理高黏性油为主的井流提供新的理论见解和实验数据，以实现更具成本效益、安全、可靠和环保的海上采油方法。该研究结果也将在其他多相流技术中有有用的应用，例如流化床中的固气流动、热化学循环中的固液流动和浆液输送等。