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随着油气田开发周期的延长,越来越多的油气井因钻井过程的原因或生产中产能枯竭等原因而永久关井,人们非常关注如何合理废弃井而又保证产层中的流体不危害地下水层。加拿大的阿尔伯达省相关部门颁布的“井废弃指南”G-20提出了详细的废弃程序和方法;C-FER公司开展的废弃井长期安全风险评估为评价废弃井的失效和量化风险提供了一套可行的方法。
With the prolongation of oil and gas field development period, more and more oil and gas wells are permanently shut-in due to drilling process reasons or production capacity depletion, and people are very concerned about how to reasonably abandon wells and ensure that fluids in the pay zone do not endanger groundwater Floor. G-20 “Well Disposal Guide” promulgated by relevant departments in Alberta, Canada, provided detailed procedures and methods for disposal; the long-term safety risk assessment of abandoned wells carried out by C-FER provided assessment of the failure and quantitative risk of abandoned wells A viable approach.