Drilling engineering is of course the most professional mechanical equipment, that is, well drilling rig, which is characterized by advanced structure, convenient auxiliary, and short use time. Its good performance greatly improves the speed and efficiency of drilling, especially in areas where agriculture is more popular, because of the demand for agricultural water, drilling and drilling rigs are more widely used.
The working process of water well drilling rig is inseparable from the use of pumps, which are used for trans-circulation operation. Under the action of atmospheric pressure, the circulating liquid flows from the sedimentation tank to the bottom of the well along the annular gap of the hole through the backwater ditch. At this time, the rotary disc drives the drill pipe and drives the bit to rotate for drilling. The negative pressure established by the mud pump suction sucks the debris mud into the inner cavity of the drill pipe, and then rises to the tap, which is discharged into the sedimentation tank through the mud pump. The circulating fluid after precipitation continues to flow into the well bore, so that the cycle starts again and again, forming a reverse circulation drilling work. Mud or water enters the drill pipe and flows out of the wellhead. It is a positive circulation drilling rig. Mud or water is sucked out of the drill pipe and flowed into the wellhead as a reverse circulation drilling rig. The positive and negative circulation refers to the circulation mode of drilling fluid in the drilling rig. When drilling, the drilling rig bit will produce slag, slag and stone, which can be brought out by the mud through the positive and negative circulation.
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