Advanced well cementing materials for improved life and environmental impact

先进的固井材料可提高使用寿命并减少对环境的影响

• 批准号: 469467-2014
• 负责人: Carey, Jason
• 金额: $ 4.66万
• 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: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618450
• 关键词: Advanced; well; cementing; materials; improved

Sanjel is a Canadian owned company that largely competes against multi-national foreign owned companies to service oil and gas wells in the Alberta oil sands region. Oil wells, such as Steam Assisted Gravity Drainage (SAGD) wells or Cyclic Steam Stimulations (CSS) wells, are subjected to steam stimulation. During this process, well materials are highly stressed; the initial steam cycle stresses the cement sheath located between the metal casing and the formation rock. Furthermore, during its life, the well temperature and pressure levels cycle numerous times as a result of pumping steam in the wellbore, which leads to cyclic thermal and mechanical stresses. Current cementing technology tends to lack the integrity required to confidently ensure complete well reliability over the entire life span (10-15 years) of the well, which, due to the potential for ground water contamination, has both environmental and health impacts in addition to the financial implications. The objectives of this project are to (i) develop new internal expansion, digital image correlation-based testing equipment, (ii) investigate cement failure mechanisms, and (iii) develop models to understand and investigate low modulus of elasticity, low cost, and high temperature resistant materials for wells. Better well integrity will help satisfy operators, regulators and the public, who tightly scrutinize the heavy oil industry with respect to health, safety and the environment. This project will greatly benefit Canada by providing Sanjel, a Canadian company, with a competitive advantage and increased cementing revenue in Western Canada, Sanjel's largest base of operations. It will also provide industry relevant training for at least eight highly qualified personnel. A further benefit, outside of Sanjel, is that operating companies will gain greater confidence in their well integrity, as they will extract Canadian heavy oil using in-situ techniques developed and proven in Canada. This will also greatly minimize the health and environmental impact of Alberta's oil sands wells.

Sanjel是一家加拿大独资公司，主要与跨国外资公司竞争，为阿尔伯塔油砂地区的石油和天然气威尔斯提供服务。威尔斯，例如蒸汽辅助重力泄油（SAGD）威尔斯或循环蒸汽增产（CSS）威尔斯，经受蒸汽增产。在这个过程中，井材料受到很大的应力;初始蒸汽循环对位于金属套管和地层岩石之间的水泥环施加应力。此外，在其寿命期间，由于在井筒中泵送蒸汽，井温度和压力水平循环多次，这导致循环的热应力和机械应力。目前的固井技术往往缺乏所需的完整性，无法自信地确保在油井的整个寿命（10-15年）内的完整可靠性，由于地下水污染的可能性，除了财务影响外，还对环境和健康产生影响。该项目的目标是（i）开发新的内部扩展、基于数字图像相关性的测试设备，（ii）研究水泥破坏机制，以及（iii）开发模型以了解和研究低弹性模量、低成本和耐高温的材料用于威尔斯。更好的油井完整性将有助于满足运营商，监管机构和公众，他们严格审查重油行业的健康，安全和环境。该项目将使加拿大公司Sanjel在加拿大西部（Sanjel最大的业务基地）获得竞争优势并增加固井收入，从而使加拿大受益匪浅。它还将为至少8名高素质人员提供行业相关培训。在Sanjel之外的另一个好处是，运营公司将对其油井完整性有更大的信心，因为它们将使用在加拿大开发和证明的现场技术开采加拿大重油。这也将大大减少阿尔伯塔油砂威尔斯井对健康和环境的影响。