GOALI: The Use of Sequestrants for the Dissolution of Scaling Deposits

目标：使用螯合剂溶解水垢沉积物

• 批准号: 0333091
• 负责人: Christine Grant
• 金额: --
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-04-01 至 2008-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0333091&HistoricalAwards=false
• 关键词: GOALI; Use; Sequestrants; Dissolution; Scaling

Grant, Christine S.North Carolina State U "GOALI: The Use of Sequestrants for the Dissolution of Scaling Deposits"The primary goal of this research is to elucidate the transport and interfacial mechanisms responsible for the dissolution of mineral salts in the presence of environmentally benign chelating polymer(s). In this study, barite is selected as the major working material due to its prevalence in scale deposits found in petroleum processing pipes and associated equipment. The PI has established that at a specific pH, there are multiple polymer species present in solution. The behavior of these individual species and their cooperative influence on the rate of dissolution is crucial to understanding the dissolution process. Dissolution studies will be conducted in different pH regimes corresponding to a study of the various dominating polymer ligand species in solution.The GOALI component of this proposal will occur with Dr. Ian Collins, a Scale Management Consultant in the Well Performance Team of the Upstream Technology Group at British Petroleum in the UK. There are three aspects of the new BP interaction: (i) BP researchers will provide technical information and "research grade" and "field grade" barite samples for controlled hydrodynamic rotating disk studies; (ii) specific conditions for dissolution experiments will be developed in conjunction with BP researchers and actual field engineers to insure relevance to current and future petroleum exploration activities; (iii) the BP research staff will serve in an advisory role to the student researchers on the projects. The PI will also continue to utilize the expertise of the chemists at Donlar Corporation in the chemical reaction kinetics sequences for the process.Broader Impacts:Preliminary batch testing of barium sulfate in the presence of thermal polyaspartates, indicate there is an inhibition of dissolution at specific conditions. In the proposed research, The PI expects to see enhanced dissolution of the barite, a common species in petroleum processing scale at specific conditions of pH, shear, polymer concentration/type. This will correspond to a specific combination of polymer conformation/adsorption resulting in unique dissolution mechanism. There should be variations in the behavior on pure minerals and for mineral composites that represent actual industrial conditions.In contrast to studies that seek to inhibit the formation of mineral scales on piping and equipment, the PI's approach focuses on the dissolution of the resulting scale. In this regard, the strategy is comprehensive in its study of the chemistry of interaction, the interfacial phenomena and the transport mechanisms (e.g., mass transfer, fluid flow) during the dissolution process; it also utilizes industrially relevant configurations and chemistries to perform the testing. This research could result in alternative environmentally benign sequestering agents for the dissolution of mineral deposits. Specifically, the prevalence of barite in scale deposits found in petroleum processing pipes and associated equipment is a significant problem area; a green chemistry solution that could benefit the economics of the process and the environment.

格兰特，克莉丝汀S.北卡罗来纳州U“目标：使用螯合剂溶解结垢沉积物“这项研究的主要目标是阐明运输和界面机制，负责溶解矿物盐在环境友好的螯合聚合物的存在下。在这项研究中，重晶石被选为主要的工作材料，因为它的流行在石油加工管道和相关设备中发现的污垢沉积物。PI已经确定，在特定pH值下，溶液中存在多种聚合物物质。这些单个物质的行为及其对溶出速率的协同影响对于理解溶出过程至关重要。溶解研究将在不同的pH范围内进行，对应于溶液中各种主要聚合物配体物质的研究。本提案的GOALI部分将与英国石油公司上游技术集团油井性能团队的规模管理顾问Ian柯林斯博士一起进行。新的英国石油公司相互作用有三个方面：（一）英国石油公司的研究人员将提供技术资料和“研究级”和“现场级”重晶石样品，用于受控流体动力旋转圆盘研究;（二）将与英国石油公司的研究人员和实际的现场工程师一起制定溶解实验的具体条件，以确保与当前和未来的石油勘探活动相关;（iii）英国石油公司的研究人员会就有关项目向学生研究员提供意见。PI还将继续利用Donlar Corporation化学家在工艺化学反应动力学序列方面的专业知识。更广泛的影响：在热聚碳酸酯存在下对硫酸钡进行的初步批次测试表明，在特定条件下会抑制溶解。在拟议的研究中，PI预计在pH值、剪切力、聚合物浓度/类型的特定条件下，重晶石（石油加工规模中的常见物质）的溶解增强。这将对应于聚合物构象/吸附的特定组合，导致独特的溶解机制。纯矿物和代表实际工业条件的矿物复合物的行为应该有所不同。与寻求抑制管道和设备上矿物垢形成的研究相反，PI的方法侧重于溶解所产生的垢。在这方面，该战略在相互作用的化学、界面现象和运输机制（例如，质量传递、流体流动）;它还利用工业相关的配置和化学来进行测试。这项研究可能会导致替代环境友好的螯合剂溶解矿床。具体地，在石油加工管道和相关设备中发现的水垢沉积物中的重晶石的普遍存在是一个重要的问题领域;一种绿色化学解决方案可以有益于该过程和环境的经济性。