Abstract:

On the basic of third-grade tectonic units potential and suitability evaluation results of suitable for carbon dioxide geological storage, learning from siting processes and methods, combining with geological conditions and technical methods level of China, we bring forward that the target scale can be determined by the four major evaluation index as layers of safety, reservoir scale, the ground environment conditions and economic suitability and 44 detailed indexes. The authors still bring forward that evaluation methods, such as the analytic hierarchy process and multi-factors space superposition assessment methods, can be used in the process of selecting target. The authors evaluated the suitability of three typical targets in  Ordos basin and Hetao basin, confirming this evaluation index system has better maneuverability and application value in selecting target.

Key words: CO₂ geological storage, target area, site selection, site description, key indicators, geological safty, storage scale