DTH technique was used in well drilling exclusively to dig, accurate, vertical bores, and rotary drilling was used to turn the hole. The Directional DTH system, patented by Atlas Copco, was first used. [pdf]
Every year, drill rigs and other heavy, specialty equipment used for deep foundation construction (Figure 1) overturn potentially causing injuries and fatalities, as well as damage to the surrounding s. [pdf]
Simulates various problems in the process of drilling and tripping in and out. Able to realize well control operation, showing well control parameters such as casing pressure, drill pipe pressure, choke positi. [pdf]
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