CO₂ injection contributes to formation energy supplement to remedy the fast production decline in tight oil reservoir and CO₂ storage at the same time.CO₂ Here, we report CO₂-water relative permeability with consideration of acid-rock reaction. The minerals of a tight rock sample were analyzed at first. CO₂Then we established an experimental method to measure the relative permeability of CO₂-water at reservoir conditions based on steady state method. After carbonic acid-rock reaction, the variation in rock mineralogy was compared. The pore size distribution in the rock sample was obtained by LF-NMR after dynamic corrosion at different pressure. Both small and large pore and throat were enlarged after corrosion. And the Klinkenberg permeability of tight sandstone was increased 7.4–18.8%. From the CO₂-water relative permeability with corrosion, the irreducible water saturation was decreased for more than 15.1% in average, which indicates more flowing spaces for other fluids. In the two-phase flow regime, a good linear relationship was found between K_rw/K_rg and gas saturation in tight sand samples. It can be used for the estimation of relative permeability at different gas conditions.CO₂CO₂ Injection of CO₂ in tight oil reservoir indicates improvement in EOR and GCS potential. Acid-rock reaction results in better fluid flow capacity for liquid and additional trapping of CO₂.

CO ₂注入有助于补充地层能量，以弥补致密油藏和CO ₂储存的快速减产。CO ₂这里，我们报告了考虑酸岩反应的CO _{2 -}水相对渗透率。首先分析了致密岩石样品的矿物质。CO ₂然后我们建立了测量CO ₂相对渗透率的实验方法- 基于稳态方法的储层条件下的水。碳酸-岩石反应后，比较了岩石矿物学的变化。岩石样品在不同压力下动态腐蚀后的孔径分布通过LF-NMR得到。腐蚀后小孔和大孔和喉道均扩大。致密砂岩的 Klinkenberg 渗透率提高了 7.4-18.8%。从腐蚀后的CO _{2 -}水相对渗透率来看，束缚水饱和度平均降低了15.1%以上，表明其他流体的流动空间更大。在两相流态中，发现 K _rw /K _rg之间存在良好的线性关系和致密砂岩样品中的气体饱和度。它可用于相对磁导率在不同的气体conditions.CO估计₂ CO ₂ CO注射₂在紧储油表示EOR和GCS潜在改善。酸岩反应导致更好的液体流动能力和额外的 CO ₂捕集。