Towards Net-Zero Emissions: mechanics, processes and materials to support risk-based well decommissioning

迈向净零排放：支持基于风险的油井退役的机械、工艺和材料

• 批准号: 577111-2022
• 负责人: Frigaard, IanIA
• 金额: $ 21.86万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=759951
• 关键词: Towards; Net; Zero; Emissions; mechanics

The Canadian Net-Zero Emissions Accountability Act became law on June 29th, 2021. A large part of the emissions focus has targeted industrial emissions, particularly from the hydrocarbon energy industry. Here we focus at oil and gas well emissions and those well operations that are performed to reduce or eliminate leakage. Permanent decommissioning of 1000's of wells occurs annually in Western Canada. Long term sealing of wellbores requires proper placement of sealing materials, avoidance of contamination/mixing and ensuring a good hydraulic bond of the cement to both steel and surrounding rock. Each of these are physically complex and difficult to predict and/or measure as they occur below surface. Industry best practices and regulatory requirements need to be based on scientific knowledge of the complex defining mechanics, the flow processes and materials performance, as well as on field-based data, measurement and monitoring. This project delivers the underlying knowledge as its objectives. The present project builds on a long-term collaboration among three Canadian universities and industrial partners (Phase I). Phase II builds on the success of Phase I and is aligned with knowledge gaps and policy issues identified by a consensus between industrial and regulatory players. The project uses infrastructure established in Phase I and addresses sub-projects in five complementary areas: (i) dump bailing & off-bottom plug placement, (ii) cleaning behind casing & squeeze cementing, (iii) well leakage, (iv) mechanics &materials, and (v) societal impacts and abandonment alternatives. Our team will conduct these interlinked studies, addressing well abandonment knowledge gaps while providing fundamental advances using combined experimental, analytical and computational methods, along with field survey work, data modelling. The overall aim is to develop understanding and tools that allow quantitative assessment of different practices. This allow the development of risk-based regulations and practices by industry and regulators.

《加拿大净零排放责任法案》于2021年6月29日正式生效。排放重点的很大一部分是针对工业排放，特别是碳氢化合物能源工业的排放。在这里，我们专注于石油和天然气井排放以及为减少或消除泄漏而进行的井作业。在加拿大西部，每年有1000口威尔斯油井永久退役。井筒的长期密封需要密封材料的适当放置，避免污染/混合，并确保水泥与钢和围岩的良好水力粘结。每一种都是物理上复杂的，难以预测和/或测量，因为它们发生在地表以下。行业最佳实践和监管要求需要基于复杂的定义力学、流动过程和材料性能的科学知识，以及基于现场的数据、测量和监测。该项目将基础知识作为其目标。本项目建立在加拿大三所大学和工业伙伴之间的长期合作基础上（第一阶段）。第二阶段建立在第一阶段的成功基础上，并与行业和监管机构之间达成共识所确定的知识差距和政策问题保持一致。该项目利用第一阶段建立的基础设施，并解决五个互补领域的子项目：（i）倾倒捞油和离底塞放置，（ii）套管后清洁和挤压固井，（iii）井漏，（iv）力学和材料，以及（v）社会影响和废弃替代方案。我们的团队将进行这些相互关联的研究，解决弃井知识的差距，同时使用综合实验，分析和计算方法，沿着现场调查工作，数据建模提供根本性的进步。总的目标是发展理解和工具，以便对不同的做法进行定量评估。这使得行业和监管机构能够制定基于风险的法规和做法。