Repeatedly lifting drill refers to passing the stuck point through repeated lifting, lowering, and lifting operations at the stuck position. After determining the stuck position of Rock Button Bits, by controlling the lifting system of the drilling rig, a series of irregular and frequent repeated operations such as lifting, lowering, and slow rotation are adopted. This type of operation method can solve the general slight sticking of the drill and the lifting of the drill. The pulling force should not be too large to prevent the drill tool from being clamped and unable to drill down.
Vigorously lifting the drilling method to solve the problem of stuck drilling
When pulling the drill tool slightly and unable to break free from the jammed part, you can try to use a larger torque to lift the stuck drill tool. Before lifting, make sure that the cables in the lifting system can withstand the applied pulling force. If the load is not enough, you need to replace a thicker cable. In actual operation, it should also be assisted by external lifting equipment such as jacks or pipe jacking machines. This type of method is suitable for dealing with stuck drills where there is no bending in the drill hole. If the drill is bent forcibly, it will easily cause the diamond drilling tool to break.
The method of drilling and fishing to solve the stuck problem
This type of method is the most commonly used, and includes many operating methods, mainly tap fishing, reaming fishing and through-hole fishing. The prerequisite for adopting these methods is that repeated lifting and vigorous lifting of the drill cannot be achieved. Because once the fishing method is used, the diamond drilling tool in the hole will inevitably be damaged, especially the reaming and fishing, and sometimes even the entire drilling tool including Water Well Drilling Tools will be ground and crushed.
Inverted buckle and sleeve milling methods to solve the stuck drill problem
The method of undercut and tap fishing is similar, except that this type of method is generally used in the drilling process of oil and gas fields. Because the thickness and quality of the drilling tool are much higher than that of geological drilling, the taper of the tap cannot meet its lifting requirements. Torque. The management and calculation of drilling tools during undercutting are very important, especially when the positive and reverse drilling tools are used alternately, they should be careful and meticulous. Otherwise, the drilling tools are not clear or the calculation is incorrect. It may cause errors in downhole drilling tools and affect the handling of accidents.