Research on the Rock Pore Structure and Porosity-Permeability Characteristics of Oilfield Saline Aquifer CCS

CCS (Carbon Capture and Geological Storage) is the single most likely technology to achieve industrialized emission reduction. CO2 geological storage has undergone experimental demonstrations in many countries and is in the industrialization preparation stage. However, in terms of the application in oilfields, the two core issues of “injectivity” and “safety” have not been fundamentally resolved. In view of this, this paper focuses on exploring the influencing factors of the interaction between carbon dioxide - formation water - rock under different formation conditions in oilfields, as well as the injectivity of carbon dioxide in oilfield reservoirs, and the variation laws of reservoir physical properties after carbon dioxide injection into oilfield reservoirs. The aim is to provide theoretical support and practical guidance for the application of CCS technology in oilfields to achieve emission reduction and enhanced oil recovery.