Drill bit quality, bit type, and formation lithology are appropriate, to speed up the drilling speed, improving the long concrete drill bit into the footage plays an important role. Generally speaking, a variety of drill bits of different sizes are used to drill an oil and gas well, and larger diameter bits are used to drill the upper layers. As the concrete drills into a soft formation, a single bit feeds long and short, a bit can generally be used repeatedly for several wells; while drilling the lower formation should use a smaller diameter bit, because the formation is hard, a single bit feeds less, usually using more than one bit. The feed rate of the new long concrete drill bit depends mainly on the size and type of the bit, the hardness of the formation, and the matching of drilling parameters. In general, the smaller the bit size, the harder the formation and the lower the feed rate.