Based on the supercritical carbon dioxide fluid system and the use thereof

The present invention relates to a fluid system and its use based on the supercritical carbon dioxide. The fracturing fluid comprises: 0.1% to 5% of the viscosifier, 0.3% to 6.5% of the conditioning agent, the remaining component is supercritical carbon dioxide. Supercritical carbon dioxide fluid system of the present invention may be provided for fracturing oil fields, in the application field the components are mixed by a certain percentage of the mass, with the proppant pumped into the formation. The present invention provides a fracturing fluid has good sand carrying performance, easy flowback, residue-free, dry phase, to completely eliminate water lock water sensitive damage, reduce the oil viscosity, inhibit clay swelling, improve reservoir permeability, a substantial conservation of water resources and so on, can achieve the purpose of efficient green construction and environmental protection.