Development trend of the modern drilling technology

Rotary drilling has experienced 3 periods of development: elementary, development and scientific drilling period. There are 3 great achievements in the late period of scientific drilling: the realization of downhole real time signal record, transmission, treat and analysis; the development of downhole directional drilling and downhole closed loop drilling system and the development of new drilling techniques. The modern drilling technology is developing toward informatization and intelligentization, combination of multi-disciplines to improve oil production and enhance oil recovery, and effectively development of special oil gas reservoirs. If the technology can be imported, the method of introduction-digesting-innovation should be applied to keep step with the advanced technology on drilling. If it cannot be imported, develop it by ourselves. Much basic research works should be performed on the 3 new drilling techniques as horizontal drilling techniques, multilateral drilling techniques and under balance drilling techniques. At present the development of petroleum engineering requires that the drilling engineering should not only construct the channel for the production of oil but also take the task to improve the production of single well, enhance the recovery and explore the special oil/gas reservoirs. So the drilling technicians should be familiar with the theory and techniques related to the oil reservoir engineering.