二氧化碳地质利用与封存项目土壤CO<sub>2</sub>通量监测研究

作者	单位
宋涛涛	中国石油新疆油田分公司监督中心, 新疆克拉玛依 834000 新疆维吾尔自治区油气田环保节能工程研究中心, 新疆克拉玛依 834000
靳军	中国石油新疆油田分公司监督中心, 新疆克拉玛依 834000 新疆维吾尔自治区油气田环保节能工程研究中心, 新疆克拉玛依 834000
宫兆波	中国石油新疆油田分公司监督中心, 新疆克拉玛依 834000 新疆维吾尔自治区油气田环保节能工程研究中心, 新疆克拉玛依 834000
王兴华	中国石油新疆油田分公司监督中心, 新疆克拉玛依 834000 新疆维吾尔自治区油气田环保节能工程研究中心, 新疆克拉玛依 834000
倪丰平	中国石油新疆油田分公司监督中心, 新疆克拉玛依 834000 新疆维吾尔自治区油气田环保节能工程研究中心, 新疆克拉玛依 834000
吴永花	中国石油新疆油田分公司监督中心, 新疆克拉玛依 834000 新疆维吾尔自治区油气田环保节能工程研究中心, 新疆克拉玛依 834000
程媛	中国石油新疆油田分公司采油二厂, 新疆克拉玛依 834000

摘要点击次数: 0

全文下载次数: 0

中文摘要:

二氧化碳地质利用与封存(CGUS)是践行国家"双碳"目标和保障能源安全的重要技术构成,封存有效性评价是CGUS体系的重要组成部分,贯穿项目全生命周期。基于土壤CO₂通量监测分析方法,开展了准噶尔盆地某CGUS示范项目泄漏监测研究,分析了土壤CO₂通量测试影响因素,阐述了区域通量差异和可能泄漏途径。研究结果表明:土壤测试深度、测试时长、环境温度和表层土壤性状是土壤CO₂通量的关键影响因素,不同时期监测核算排放量需考虑环境温度的影响;单井周边区土壤CO₂通量较高,井筒1 m范围CO₂平均排放速率约为背景区的8倍,井筒是现阶段CO₂逸散的主要途径;示范项目监测期间区域土壤CO₂逸散排放量约372.89 kg/d,全年CO₂逸散排放量约占注入量的0.14%,对环境影响甚小。

英文摘要:

Carbon Dioxide Geological Utilization and Storage (CGUS) is an important technological component in implementing China's "dual-carbon" goals and ensuring energy security.The evaluation of storage effectiveness is an integral part of the CGUS system,spanning the entire project lifecycle.This paper,based on soil CO₂ flux monitoring and analytical methods,conducted a soil leakage monitoring study in a CGUS demonstration project in the Junggar Basin.It analyzed the influencing factors on soil CO₂ flux testing and discussed regional flux differences and potential leakage pathways.The study results indicate that soil testing depth,testing duration,ambient temperature,and in-situ removal of surface loose soil are key factors affecting soil CO₂ flux.The effect of ambient temperature should be considered when calculating emissions at different times.The soil CO₂ flux around the single well area was relatively high,with an average CO₂ emissions within 1 m of the wellbore being about 8 times that of the background areas,indicating that the wellbores are currently the main pathway for CO₂ leakage.During the monitoring period of the demonstration project,the regional soil CO₂ fugitive emission was 372.89 kg/d,and the annual CO₂ fugitive emission accounted for approximately 0.14% of the injected volume,suggesting minimal environmental impact.This study provides a good technical practice for CGUS soil flux monitoring and evaluation,which is of great significance for the effectiveness and safety assessment of the project.

查看全文查看/发表评论下载PDF阅读器