以黄骅坳陷东营组富含CO2气藏与非CO2气藏碳酸盐岩储层为研究对象，针对"碳酸盐岩储层对CO2充注的成岩响应"科学问题，采用岩芯观察、实验岩石学、天然类比和比较岩石学研究相结合的方法，通过碳酸盐岩储层内CO2注入后的溶蚀溶解与沉淀特征、CO2注入对碳酸盐岩储层物性的影响、后期裂隙（缝）充填物与富CO2流体的成因联系等方面的研究，查明碳酸盐岩储层中CO2注入后的岩石学表征，揭示CO2充注对碳酸盐岩储层的改造，探讨碳酸盐岩对CO2的捕获方式与能力，为我国目前正在开展的鄂尔多斯盆地示范工程提供来自天然CO2系统的地质信息。

Water-rock-CO2 interactions in carbonate reservoir will be discussed through the identifications from natural analogue and experiment in this study. The CO2 gas carbonate reservoir and non-CO2 gas carbonate reservoir in Dongying Formation of Huanghua depression are chosen as the study object. In this work the core observation, water-rock -CO2 interaction experiment, natural analogue and comparison petrology will be used in order to: i) assess the dissolution and precipitation characteristic for carbonate reservoir during CO2 flooding, ii) survey the affect of CO2 fluid on the porosity and permeability, iii) validate the genetic relationship between the later crack-filling and CO2 flooding. The purpose of the study is to characterize and explain the water-rock-CO2 interactions in the carbonate reservoir during these natural CO2 accumulations and assess the consequences of these interactions on CO2-storage capacity and porosity. It will also give some insights into future directions of the CO2 destinaficion from the natural CO2 system for the Erdos CO2 capture sequestration project(CCS).