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Construction method for ultra-short-distance side-penetrating bridge pile foundation of metro interval tunnel
Free accessEuropean Patent Office | 2024| -
Automatic pressure supplementing device and automatic pressure supplementing method for carbon dioxide flooding injection well casing pipe
Free accessEuropean Patent Office | 2024| -
Shale oil reservoir volume fracturing yield increase potential evaluation and soaking time determination method
Free accessEuropean Patent Office | 2024| -
Steel pipe column pile arch cover method subway station structure in soft stratum and construction method of steel pipe column pile arch cover method subway station structure
Free accessEuropean Patent Office | 2024| -
Jetting and chiseling parallel construction process for vertical shaft of ultra-thick water-rich lamp shadow group
Free accessEuropean Patent Office | 2024| -
Drilling well wall joint connecting structure and construction method thereof
Free accessEuropean Patent Office | 2024| -
Analysis method for judging oil well blockage reason and composite blockage removal liquid thereof
Free accessEuropean Patent Office | 2024| -
Intelligent control method and system for electric oil casing drilling equipment
Free accessEuropean Patent Office | 2024| -
Neural network-based automatic induction control method and device for electric control packer
Free accessEuropean Patent Office | 2024| -
Small-section synchronous ore caving subsequent filling recovery process for top and bottom pillar residual ore resources
Free accessEuropean Patent Office | 2024| -
Full-length cementation anchor cable with slurry discharge grading control structure and using method of full-length cementation anchor cable
Free accessEuropean Patent Office | 2024| -
Prefabricated temporary inverted arch structure excavated by pilot tunnels and construction method of prefabricated temporary inverted arch structure
Free accessEuropean Patent Office | 2024| -
Construction method for special-shaped large-section ultra-deep vertical shaft of water delivery tunnel
Free accessEuropean Patent Office | 2024| -
Tunnel supporting construction device suitable for various surrounding rock conditions
Free accessEuropean Patent Office | 2024|