Comparison of advantages of well drilling technology at home and abroad
Since the 1990s, the well-drilling technology has begun to develop rapidly abroad. At present, the number of well-drilling equipment equipped globally has exceeded 15,000, and will exceed 20,000 in 2011, and it is still increasing. In many developed countries, well drilling has become a routine drilling technique. For example, drilling wells in the United States and Canada account for about one-fifth of the total wells in the country.


