Developing and deploying commercial-scale carbon dioxide (CO₂) storage at a site requires operational strategies to manage pressure and CO₂ plume distribution. In the natural gas storage and oil and gas industries, fluid extraction has been successfully implemented as a strategy to manage pressure and control fluid distribution (i.e., hydrocarbon recovery and natural gas storage efficiency, respectively). The technical challenges of integrating brine extraction at CO₂ storage sites are expected to be similar, if not identical, to those in the natural gas storage and petroleum industries.

Major technical challenges of using brine extraction to manage storage in a storage unit include (1) designing and completing the brine extraction wells, (2) locating the brine extraction well, (3) assessing the efficacy of brine extraction, and (4) handling the extracted brine. The design and completion of the brine extraction well include the well type (i.e., vertical or horizontal) and perforated interval. The location of the well is influenced by the timing of extraction operations (i.e., prior or after CO₂ injection starts) and project objectives (i.e., desired directional movement of the CO₂ plume and avoid or minimize CO₂ extraction). The efficacy of brine extraction requires a baseline projection of the pressure and CO₂ plume distribution. Options for handling extracted brine include subsurface disposal, surface disposal, and industrial use. This paper addresses means of overcoming technical challenges that may likely be encountered before or after CO₂ injection starts.

在站点上开发和部署商业规模的二氧化碳（CO ₂）存储需要操作策略来管理压力和CO ₂羽流分布。在天然气存储以及石油和天然气工业中，流体提取已成功实施为管理压力和控制流体分布（即分别为烃采收率和天然气存储效率）的策略。预计在CO ₂储存地点整合盐水提取技术面临的技术挑战与天然气储存和石油工业中的挑战类似（即使不完全相同）。

使用盐水提取来管理存储单元中的存储的主要技术挑战包括：（1）设计和完善盐水提取井；（2）放置盐水提取井；（3）评估盐水提取的有效性；以及（4）处理提取的盐水。盐水提取井的设计和完井包括井的类型（即垂直或水平）和射孔间隔。井的位置受提取操作的时机（即，开始注入CO ₂之前或之后）和项目目标（即，CO ₂羽流的所需方向性运动，避免或最小化CO ₂提取）的影响。盐水提取的功效需要压力和CO ₂的基线预测羽状分布。处理提取的盐水的选项包括地下处置，地面处置和工业用途。本文介绍了克服在开始注入CO ₂之前或之后可能遇到的技术挑战的方法。