China's vast territory, large geographical area, the climate of each region is also very different. Jiangnan rainy and humid, but several provinces of the Central Plains region is easy to drought, population with varying degrees of water is sometimes difficult situations occur. Although in recent years our country's water diversion project to support some arid regions, but the saying goes "far will not be forthcoming," most of the time the price of large hydraulic drilling rig, or to rely on local water workers to solve problems. The most common method is to dig a well, not to let the local people without water, drilling team often work 24 hours a day, the players divided into two groups take turns working onboard drilling rig and the moment did not dare stop. Climate determines the depth of groundwater, if often drought had dried up shallow groundwater, water well drilling rig car to hit 100 meters below to find water, if it is a well drilling rig, then generally need about 10 days. Under these circumstances there are rigs, there are some places completely artificial wells with large hydraulic drilling rig, the job the team is down to the bottom of the deep well with simple tools for digging, gravel operations 2015 large hydraulic drilling rig, work can be difficult conceivable. What are the main characteristics of well drilling rig because a growing number of major projects is the frequent use of various rigs, drilling rigs with different engineering requirements, blood replacement quickly, but also with the rapidly changing characteristics. Well drilling rig works by pumping reverse circulation type, in the role of atmospheric pressure, water well drilling rig circulating fluid through the return from the sedimentation tank ditch along the ring gap flow to the bottom of the borehole, the drill drive rotation of drilling, established by the mud pump suction vacuum the debris drill mud suction lumen, circulating fluid after precipitation continue to flow into the well bore. Well drilling rig operations and maintenance are very convenient, long life components, production costs are relatively low. Drill new structure, to mention lead, breakout unique tools to facilitate the demolition drill pipe connection and fast.