The shock sub drilling is designed to isolate the drill string from axial deflections produced by the bit during drilling operations and to protect the bit from excessive wear during drilling operations. The tool will absorb shock load on the drill string and drill bit. It has a heavy duty design based on a wide range of operating experience, and they can drill in any condition, whether soft, medium or hard formation.

Certainly, the shock sub drilling has broad application. The tool is engineered to increase bit penetration and to prolong bit life as well as reduce drill collar fatigue, vibration and impact loads.  First of all, it can be run at the bit or in the drill collar string as required by the location personnel. Besides, it can be run box up or box down as this will not affect the performance of the tool. What's more, all internal parts of the tool are lubricated and in the event of fluid loss, the tool still functions as the mechanical spring mechanism will function from lubrication by drilling fluid.

There are many kinds of shock sub drilling, including mechanical hydraulic shock sub, floating shock sub, drilling bumper sub, as well as bumper sub oilfield.

The mechanical hydraulic shock sub is a two-function shock sub that absorbs the pulsate and shock from drill tools by compressing spring and oil to store the energy. It is used for reducing vibrations caused by hard formation drilling and keeping the drill bit firmly on the bottom, so that it helps to reduce drill string connection fatigue and prolong drill string life.

The floating shock sub is utilized in both slanted and vertical drilling operations to reduce vibration and wear of the drill string and drill rig components. It has two important functions. First of all, it provides a means of making up and breaking out threaded connections without damaging threads. The second is that it prolongs bearing and gear life of the rotary top drive.

The drilling bumper sub is a key drillstem component for deepwater drilling operations, where drillstring oscillation can be a problem. This tool provides 6 ft of reliable telescopic movement, without placing any limitations on drillstring torque capacity, tensile strength, or hydraulic capability.

The bumper sub oilfield is a highly dependable accessory tool. Suitable for all fishing operations, it has proven to be especially successful in surviving harsh down-hole applications. The tool design allows full torque and unrestricted fluid circulation at all times. Standard stroke is 20 inches; other stroke lengths are available on request.

Therefore, these shock sub drilling are an important integral part of everyday drilling. Not having the right thread adapter can make people's life miserable. Furthermore, the shock sub drilling manufacturer provides a large inventory of common and not so common sizes to meet the customers' need.