Mekaaniset laitteet poraus vesi kaivot ja viimeistely toiminnot kuten juokseva kaivo putket ja puhdistus kaivot. Mukaan lukien teho laitteet ja pora terät % 2c pora putket % 2c putket % 2c jne. Yleensä jaettu kolmeen luokkaan % 3a pyörivä poraus lautat % 2c isku poraus lautat lautat ja seos poraus lautat.
Yleiskatsaus
In the 2nd century BC, China already had primitive percussion drills that used manpower and the elastic force of bamboo bows to make conical drill bits impact the formation and drilled. Later, they were used in rural areas of China for a long time. It was not until the 1950s that wire rope impact drilling rigs were introduced from abroad. In the early 1960s, simple water well drilling rigs such as large and small pot cones and punch cones began to be developed. The development of forward circulation rotary drilling rigs began around 1966. Around 1974, reverse circulation rotary drilling rigs and compound drilling rigs were successfully developed. In the late 1970s, a down-the-hole vibrating rotary drilling rig was created. European and American countries mainly used wire rope impact drills in the 19th century. In the 1860s, France first used rotary drills, which were later introduced to the United States and developed rapidly. In the 1950s, reverse circulation rotary drilling rigs began to be developed. Later, rotary drilling rigs that used compressed air instead of mud as the well cleaning medium appeared. In the 1970s, hydraulic power head rotary drilling rigs were developed.