The existing data for wells in the Weyburn-Midale Field were used in conjunction with publicly available data to create an updated well integrity risk assessment as an aid in establishing CO₂ containment risk and developing a guide to selection of monitoring technologies for risk management. The assessment built upon an existing assessment to rank 1424 wells on 13 categories used as a proxy for likelihood of CO₂ migration and four categories used as a proxy for severity of impact of migration. The results of the assessment were used to show that both the risk posed by individual wells and risk posed by categories may be significant with respect to CO₂ migration. The location of the top of cement, quality of the casing, and type of well categories were ranked high throughout the distribution of wells with respect to likelihood of migration. The assessment of casing integrity and setting of casing through the Midale Evaporite was a differentiating factor between higher-likelihood and lower-likelihood well scores. The aquifer protection category used in assessing the severity of impact ranked high across the distribution of wells. The proximity to a water source category was a differentiating factor between higher-severity and lower-severity rankings. The wells scores and ranking categories were used to assess the value of specific monitoring tools for managing containment risks. The outcome of the study showed that both high risk wells and high-risk categories can be identified and that a monitoring program should be adopted to address both through point and area monitoring.

Weyburn-Midale油田的现有井数据与公开数据结合使用，以创建更新的井完整性风险评估，以帮助建立CO ₂围堵风险并制定用于风险管理的监测技术选择指南。该评估建立在现有评估的基础上，对13种类别的1424口井进行了排名，这些类别用作CO ₂迁移可能性的指标，而四种类别则作为迁移影响的严重程度的指标。评估结果表明，对于CO ₂而言，单个井的风险和类别风险均可能很大。移民。在整个井分布中，就迁移的可能性而言，水泥顶部的位置，套管的质量和井类别的类型都排名很高。通过Midale蒸发岩对套管完整性和套管定型的评估是高可能性井得分与低可能性井得分之间的区分因素。在评估影响的严重性时使用的含水层保护类别在整个油井分布中排名很高。与水源类别的接近程度是高严重等级与低严重等级之间的区别因素。井的得分和等级类别被用来评估管理围堵风险的特定监测工具的价值。