Air driven reverse circulation drilling machine

Gas lift cycle Drilling Machine is a kind of equipment that uses gas pressure to drive the drilling machine. It adopts the principle of gas lift, by injecting high pressure gas into the drill pipe, producing gas lift effect, so that the drill pipe and drill bit can float and sink, so as to achieve drilling operations.

The working principle of the gas lift cycle drill is as follows: First, high-pressure gas is injected into the drill pipe through the gas pipe, so that a certain gas pressure is formed inside the drill pipe. Then, by controlling the supply and shutdown of the gas source, the size of the gas pressure is adjusted to control the lifting and sinking of the drill pipe and drill bit. When the gas source supplies gas, the high pressure gas enters the drill pipe and produces the gas lift effect, which makes the drill pipe and drill bit float. When the air supply is stopped, the drill pipe and drill bit sink due to their own gravity. Drilling operations can be achieved by repeating the process of supplying and stopping gas.

The gas lift cycle drill has the following advantages: First, it does not need to use liquid as the driving medium, avoiding the maintenance and management costs of the hydraulic system; Secondly, the gas-lift rice circulating drill has higher working efficiency and drilling speed, which is suitable for some occasions that need to drill quickly; In addition, since the gas lift cycle drill does not use liquids, it can avoid the pollution of underground water sources and environmental pollution problems.