Petroleum Reservoir Evaluation and Development ›› 2023, Vol. 13 ›› Issue (4): 484-494.doi: 10.13809/j.cnki.cn32-1825/te.2023.04.010

• Comprehensive Research • Previous Articles     Next Articles

Research progress of evaluation of CO2 storage potential and suitability assessment indexes in saline aquifers

ZHAO Yulong1,2(),YANG Bo1,2,CAO Cheng1,2(),ZHANG Liehui1,2,ZHOU Xiang1,2,HUANG Chenzhi3,RUI Yiming3,LI Jinlong4   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu, Sichuan 610500, China
    2. Southwest Petroleum University, Chengdu, Sichuan 610500, China
    3. Natural Gas Research Institute of Southwest Oil & Gas Field Company, PetroChina, Chengdu, Sichuan 610213, China
    4. Exploration and Development Research Institute of Jilin Oilfield Company, PetroChina, Songyuan, Jilin 138000, China
  • Received:2022-07-07 Online:2023-08-26 Published:2023-09-01

Abstract:

CO2 storage in saline aquifers is one of the feasible technical deployment schemes, and it is also the main approach to reduce CO2 emission in the medium and long term. To meet the assessment requirements of the storage potential in saline aquifers, four CO2 geological storage mechanisms are systematically expounded. Based on the storage mechanism, an evaluation index system for the suitability of CO2 geological storage in saline aquifers is established, including four evaluation index layers of safety, technology, economy, and social environment. The weight of each evaluation index factor is calculated using the analytic hierarchy process. For saline aquifers with an open structure and rich hydrogeology, it is recommended to consider the combination of residual trapping and solubility trapping to evaluate CO2 storage potential. The CO2 geological storage suitability evaluation index system of saline aquifers provides a reference for conducting the national CO2 storage suitability evaluation.

Key words: carbon capture, utilization and storage(CCUS), saline aquifer, storage mechanism, storage potential, evaluation index system

CLC Number: 

  • TE34