Research on Tools of Deep Well Coiled Tubing Sidetracking at Domestic and Foreign

At present, coiled tubing is used for sidetracking at domestic and foreign. The sidetracking has lots of advantages, such as small footprint, low cost, short time, fast drilling speed, safety and environmentally friendly. It is one of the most advanced drilling technologies today, which is easy to realize automation and intelligence, and can effectively reduce the cost of sidetracking. However, deep well coiled tubing drilling is still in the experimental stage in China. At present, it is difficult for domestic coiled tubing tools to realize sidetracking from a depth of more than 4000m. Therefore, it will have certain research significance to preliminarily determine the tools for deep well CT sidetracking.