Coil Tube Drilling (CTD) is a drilling technique that combines coiled tubing with directional drilling. A reservoir system is created using a mud motor. Depleted wells, unconventional gas shale, underground coal gasification, and coal bed methane are examples of common uses. The coiled tubing device is capable of running thousands of meters of joint-free steel pipes into oil and gas well production tubing for workover activities like well cleanout, fishing, fracturing, and acidification. For transporting, it is coiled onto a big diameter reel. Coiled tubing reduces tube tripping time and eliminates the requirement for make-up and break-out of singles. It continually circulates workover fluid downhole, replacing and filling it at predetermined points, preventing reservoir damage and assuring operation safety.