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This invention discloses a combined process for restoring reservoir drainage and gas production channels using high-pressure drive and chemical dissolution, relating to the field of efficient oilfield exploitation technology. The process includes: S1, conducting production profile testing and sampling analysis of blockages in the target gas well to determine the type, distribution location, and reservoir physical parameters of the blockages, and preparing a corresponding chemical dissolving agent based on the analysis results. This invention couples the mechanical fracture-creating effect of high-pressure pulsed fluid with the cavitation effect and vibrational mass transfer effect of ultrasound. Based on the initial dissolution of blockages by the chemical dissolving agent, the stress waves generated by the high-pressure pulse expand the reservoir microfractures. Simultaneously, the collapse of microbubbles generated by ultrasound enhances the dissolution reaction rate, and the vibration promotes the dissolving agent's penetration into the micropores, achieving a synergistic effect of chemical dissolution and physical displacement, thoroughly removing blockages from the pore throats, and avoiding secondary precipitation of dissolution products.

The invention relates to the technical field of biomass charcoal loaded nanoscale zero-valent iron production equipment, in particular to a biomass charcoal loaded nanoscale zero-valent iron production device and a production method thereof.The biomass charcoal loaded nanoscale zero-valent iron production device comprises a fixed chassis, supporting pipes are installed on the outer side of the fixed chassis in the circumferential direction of the fixed chassis at equal angles, and positioning circular rings are placed at the tops of the supporting pipes; a cylinder is fixedly installed on the inner side of the positioning circular ring, the inner wall of the cylinder is a regularly-arranged concave-convex face, a discharging opening is formed in the position close to the bottom of the cylinder, a sealing ring is concentrically welded to the bottom of the cylinder, a disc is rotatably installed on the inner ring of the sealing ring, and a penetrating hole is formed in the center of the disc. Circular holes are symmetrically formed in the disc with the center line of the penetrating hole as the axis. Main supporting plates are horizontally mounted in the middle sections of the outer sides of the supporting pipes, and auxiliary supporting plates are welded to the outer sides of the two symmetrical main supporting plates in an extending manner; a three-dimensional turbulent flow field can be formed in the cylinder, and the cleaning effect on the biomass charcoal loaded nanoscale zero-valent iron is improved.