Carbon capture, utilization, and storage (CCUS) is considered one of the most effective measures to achieve net-zero carbon emissions by 2050, and low-rank coal reservoirs are commonly recognized as potential CO₂ storage sites for carbon sequestration. To evaluate the geological CO₂ sequestration potential of the low-rank coal reservoirs in the southern margin of the Junggar Basin, multiple experiments were performed on coal samples from that area, including high-pressure mercury porosimetry, low-temperature N₂ adsorption, overburden porosity and permeability measurements, and high-pressure CH₄ and CO₂ isothermal adsorption measurements. Combined with the geological properties of the potential reservoir, including coal seam development and hydrodynamic characteristics, the areas between Santun River and Sigong River in the Junggar Basin were found to be suitable for CO₂ sequestration. Consequently, the coal-bearing strata from Santun River to Sigong River can be defined as “potentially favorable areas for CO₂ eequetfraiion” To better guide the future field test of CO₂ storage in these areas, three CO₂ sequestration modes were defined: 1) the broad syncline and faulted anticline mode; 2) the monoclinic mode; 3) the syncline and strike-slip fault mode.

碳捕获、利用和封存（CCUS）被认为是到2050年实现净零碳排放的最有效措施之一，而低煤阶煤库通常被认为是潜在的碳封存CO 2 封存_场所。为评价准噶尔盆地南缘低阶煤储层CO 2 地质封存潜力，对该地区煤样进行了高压压汞、低温N 2 吸附、覆盖层等_多项实验。孔隙度和渗透率测量，以及高压CH ₄和CO ₂等温吸附测量。结合潜在储集层煤层发育、水动力特征等地质特征，准噶尔盆地三屯河至四工河之间区域适合CO 2_封存。因此，三屯河至四工河的含煤地层可定义为“CO ₂封存潜在有利区”。为了更好地指导这些地区未来CO ₂封存的现场试验，定义了三种CO ₂封存模式： 1 ) 宽阔的向斜和断层背斜模式；2）单斜晶型；3）向斜和走滑断裂模式。