A custom-made high pressure and high temperature PVT setup for reactive phase behavior studies

用于反应相行为研究的定制高压高温 PVT 装置

• 批准号: RTI-2021-00030
• 负责人: Hassanzadeh, Hassan
• 金额: $ 9.2万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718633
• 关键词: custom; made; pressure; temperature; PVT

Application of solvents have gained momentum for in-situ recovery of bitumen. Utilization of solvents has provided the oil sands industry with benefits such as reducing greenhouse gases emission, less energy consumption, and significant reduction of wastewater. Undeniably, the solvent application has assisted oil sands producers in Alberta to sustain their operation under recent low commodity prices and stringent environmental regulations. Phase behavior study of bitumen/water/solvent systems is a very complicated process and much more challenging than the light oils. Complexities arise due to the viscous nature of the mixtures, high asphaltenes content, interaction of water and asphaltenes at high temperatures, and reaction of aqueous solvents with naphthenic acids in bitumen. The phase behavior studies of bitumen/solvent systems conducted in the past have given little or no attention to reactive nature of this mixture. Bitumen consists of many complex molecules which react with the polar components in aqueous phase. Recently, we have observed that the asphaltenes and naphthenic acids interact with aqueous phase. The interaction generates in-situ surfactants and gases such as CO2, H2S, and H2 through aquathermolysis reactions and produces stable emulsions that may lead to misinterpretation of phase behavior data. Oil sands operators also reported high volume of acid-gas production and faced challenges in treatment of the produced emulsions that may have roots in the observed phenomena. Therefore, it is necessary to address the reactive nature of the mixtures in phase behavior measurements. This reactive nature prevents us in using our existing conventional experimental Pressure-Volume-Temperature (PVT) setups for conducting such experiments. The conventional PVT setups are designed for a non-reactive feed. In order to address this deficiency, a new custom-made experimental PVT setup has been proposed to enable us to study the reactive phase behavior of bitumen/water/solvent systems. The proposed new equipment will be the first reactive phase behavior experimental setup in the area of bitumen/water/solvent systems and enrich the research by 40 HQP at the University of Calgary. The most notable benefits of the proposed experimental setup are in providing knowledge and quality data to the oilsands industry to help them develop and implement new bitumen recovery technologies that consume less energy and water, generate a reduced amount of waste, and less GHG emission. These benefits are well-aligned with the Canada climate change mitigation strategy and will improve the international reputation of Canada in the environmental friendliness. Furthermore, the new experimental setup will put our team at the forefront of solvent-based and solvent-aided heavy oil and bitumen recovery research.

溶剂的应用已经获得了沥青的原位回收动量。溶剂的利用为油砂行业提供了益处，例如减少温室气体排放，减少能源消耗以及大量减少废水。不可否认的是，溶剂申请已协助艾伯塔省的油砂生产商在最近的低商品价格和严格的环境法规下维持其运营。沥青/水/溶剂系统的阶段行为研究是一个非常复杂的过程，比轻油更具挑战性。复杂性是由于混合物的粘性性质，高温下的沥青质含量，水和沥青质的相互作用以及沥青中水性溶剂与沥青酸的反应。过去进行的沥青/溶剂系统的相行为研究几乎没有关注该混合物的反应性。沥青由许多复杂分子组成，它们与水相中的极性成分反应。最近，我们观察到沥青质和萘酸与水相相互作用。该相互作用通过水尿素分解反应产生原位表面活性剂和气体，例如CO2，H2S和H2，并产生稳定的乳液，可能导致对相行为数据的误解。油砂运营商还报告了大量的酸性气体产生，并在治疗可能根基在观察到的现象中的乳液方面面临挑战。因此，有必要在相行为测量中解决混合物的反应性。这种反应性的性质阻止了我们使用现有的常规实验压力 - 温度（PVT）设置进行此类实验。常规的PVT设置设计用于非反应性饲料。为了解决这一缺陷，已经提出了一种新的定制实验PVT设置，以使我们能够研究沥青/水/溶剂系统的反应性相行为。拟议的新设备将是沥青/水/溶剂系统领域中的第一个反应性阶段行为实验设置，并在卡尔加里大学（University of Calgary）通过40 hqp进行了研究。拟议的实验设置的最显着好处是为油砂行业提供知识和质量数据，以帮助他们开发和实施新的沥青恢复技术，这些技术消耗了减少能源和水，减少了废物量，减少了温室气体的排放。这些好处与加拿大加拿大气候变化策略良好结合，并将在环境友善中提高加拿大的国际声誉。此外，新的实验设置将使我们的团队处于基于溶剂和溶剂的重油和沥青恢复研究的最前沿。