Mine audio frequency electric perspective data consistency correction method
CN105239971A
Conveying device and conveying method for underground coal mine soft coal seam drilling sieve tube
CN105221087A
Truck-mounted drilling rig drilling rod top screw thread unscrewing device
CN105239938A
Automatic rod replacing device of underground drill rig for mines
CN105350952A
Intelligent drilling track measuring device and method
CN105274994A
Suck-back prevention and deposition prevention grouting process and device for deep waterlogged sand layer
CN105239937A
Multifunctional manual clamp holder for drilling rig
CN105137475A
Belt conveyor-based coal mine working face real-time detection system and method
CN105134073A
Radial horizontal well bottom steering device and construction method thereof
CN105134072A
Well bottom steering device for drilling of ultra-short-radius horizontal well and construction method of well bottom steering device
CN105114029A
Water plugging method for poor sealing borehole in mine laneway
CN105041255A
Hole bottom combined drilling tool used for fishing broken falling objects in drilled hole and fishing method of hole bottom combined drilling tool
CN105134693A
Oil distribution structure with automatic gap compensation function
CN105064982A
Precise guide butt joint equipment for coal field ground hole and target points in underground roadway and precise guide butt joint method for coal field ground hole and target points in underground roadway
CN105006630A
In-hole emission antenna apparatus used for coal mine underground electromagnetic wave wireless transmission
CN105116451A
Insulating short piece based in-hole while-drilling electrical prospecting electrode device
CN105137492A
In-hole emission electrode device used for electrical prospecting while drilling
CN105140717A
Blind plugging type connecting device used for mine measurement while drilling nipples
CN105113987A
Soft-hard interbedding coal seam bedding measurement while drilling (MWD) orientation drilling equipment and construction method thereof
CN105156097A
Method for processing hole drilling track measurement data
