How Can I Save My Kelly Threads from Wear and Tear?


A Kelly is a crucial piece of drilling equipment that provides rotational motion to the drill string while allowing it to be raised and lowered. Since Kellys are constantly in motion, they are prone to serious wear and tear. Fortunately, there is a way to protect your kelly threads, prolong the life of your drill string, and save you thousands of dollars in unplanned maintenance. Saver Subs!

What is a Kelly Saver Sub?

Saver subs are short lengths of drill collar with male and female threads on opposite ends that screw in place between the Kelly and the rest of the drill string. Saver subs are designed to absorb the impact and stress that would typically occur at a pipe joint. These small components are manufactured to be “sacrificial” and need to be replaced frequently. However, the cost of replacing saver subs pales in comparison to the price of new Kelly or length of drill string pipe.

Are Kelly saver subs and Top drive saver subs the same thing?

There are two types of saver subs: Kelly saver subs and top drive saver subs. While both couplings function in the same way, their thread patterns are different and are not interchangeable between Kelly and top drive drilling systems. So, when ordering saver subs, it’s crucial to specify which system you are buying for.

Need Saver Subs For your Drilling Rig? They're Reddy!

Even though saver subs are designed to be expendable, they are still an essential component of an efficient drilling rig. They, therefore, need to be manufactured to the highest possible standard. For nearly 35 years, Reddy Pipe has been manufacturing and distributing premier quality oilfield supplies for drilling operations all across the United States. If you are in need of saver subs for your Kelly or top drive drilling rigs, contact us today! Our customer service and sales teams are available 24/7 to handle emergency supply orders.

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