How to properly store tricone bits

Why Proper Storage Matters

Tricone bits are precision-engineered tools with multiple interdependent components — cones, bearings, seals, threads, and cutting structures. Improper storage can lead to rust on bearing surfaces, thread corrosion, seal degradation, and impact damage to tungsten carbide inserts. These problems may not be visible during a quick visual check, but they can cause premature failure once the bit goes downhole. Taking the time to store bits correctly protects your capital investment and ensures reliable performance on the next job.

Step 1: Clean Before You Store

Never put a tricone bit into storage straight from the hole. Drilling mud, rock cuttings, and formation fluids trapped between the cones and around the bearing seals will harden over time, potentially causing seal damage and bearing contamination. Before storing, the bit should be thoroughly cleaned using a high-pressure water or air hose. Pay special attention to the areas between the cones, around the nozzles, and near the shirttail. Once clean, allow the bit to dry completely — trapped moisture is a primary cause of rust and bearing degradation during storage.

After cleaning, perform a brief inspection. Check for chipped or broken teeth, cracks on the cone shells, and any signs of seal leakage. Document the condition of the bit so you know exactly what you are pulling from inventory when it is time for the next run. A bit that goes into storage with undetected damage is a problem waiting to resurface.

Step 2: Control the Storage Environment

The ideal storage environment for tricone bits is a clean, dry, and well-ventilated indoor space. Moisture is the single biggest enemy of stored bits. High humidity promotes rust on steel surfaces and can accelerate the deterioration of bearing grease and seal materials. Aim for a relative humidity below 60% and a temperature range of 10°C to 27°C (50°F to 80°F). If your storage area is in a humid climate, consider using a dehumidifier or moisture-absorbing desiccant packs near the stored bits.

Keep the storage area free from dust, chemical fumes, and corrosive materials. Bits should never be stored directly on the ground, especially on concrete floors that can wick moisture upward. If indoor storage is not available, at minimum keep bits elevated on pallets or racks and covered with a waterproof tarp that still allows ventilation. Avoid storing bits outdoors for extended periods, as temperature fluctuations can cause condensation inside the bearing system.

Step 3: Position the Bit Correctly

How you position a tricone bit during storage matters. The recommended method is to place the bit on a properly sized bit breaker or a sturdy wooden cradle that supports the bit body without putting weight on the cones. Storing a bit with the cones resting on a hard surface can create flat spots on the bearings over time, especially if the bit is heavy or stored for months. The weight of the bit should be carried by the bit body, not the cutting structure.

For facilities managing larger inventories, dedicated storage racks with individual cradles are the best solution. These racks keep bits organized, prevent them from contacting each other, and make it easy to identify each bit by size and type. A well-organized rack also supports a first-in, first-out (FIFO) inventory rotation system, which helps ensure older bits are used before they sit too long in storage.

Step 4: Protect the Threads

The threaded pin connection is one of the most vulnerable parts of a tricone bit during storage. Exposed threads can rust, collect dirt, or suffer impact damage from handling. Before storing, clean the threads thoroughly and apply a fresh coat of high-quality thread compound or rust-preventive grease. Then install a thread protector cap. This simple step prevents corrosion and ensures the bit will connect smoothly to the drill string when it is time to run it. A bit with damaged or corroded threads may not torque properly, leading to connection issues downhole.

Step 5: Special Considerations for TCI Tricone Bits

TCI tricone bits (tungsten carbide ｉｎｓｅｒｔ bits) have specific storage needs that differ slightly from steel tooth bits. The carbide inserts are extremely hard but also brittle. A sharp impact — such as a bit being dropped or knocked against another bit during storage — can cause micro-fractures in the inserts that are invisible to the naked eye but will lead to premature ｉｎｓｅｒｔ breakage once drilling begins. For this reason, TCI bits should always be stored with adequate spacing between them, and handling should be done with lifting equipment rather than by rolling or dragging the bit.

Additionally, sealed bearing TCI bits rely on internal grease reserves to lubricate the bearing surfaces. Prolonged storage in high-temperature environments can cause the grease to break down or separate. This is another reason why temperature-controlled storage is important for maximizing the service life of your bits. If a TCI bit has been in storage for more than six months, it is worth rotating the cones by hand before installation to confirm they still turn smoothly.

Step 6: Handling During Retrieval from Storage

The way you retrieve a bit from storage is just as important as how you put it away. Use a lifting sub threaded into the pin connection, or attach proper lifting slings to the bit body — never lift or move a bit by wrapping chains or slings around the cones. Doing so places stress on the bearings and can damage the cutting structure. Treat the bit as a precision tool from the moment it leaves the rack until it is made up on the drill string.

Before taking a stored bit to the rig floor, remove the thread protector, inspect the threads for any signs of corrosion, and re-apply thread compound if needed. Rotate each cone by hand to verify smooth movement. A cone that feels stiff or rough after storage may indicate bearing contamination or grease degradation, and the bit should be further inspected before use.

Step 7: Inventory Management Best Practices

Good storage is inseparable from good inventory management. Each bit in storage should be labeled with its size, type, IADC code, and the date it was placed into storage. This information allows you to implement a first-in, first-out rotation system, ensuring that bits do not sit unused for excessive periods. Even under ideal storage conditions, bearing grease and seal materials have a finite shelf life.

Maintain a simple log — whether on paper or in a digital spreadsheet — that tracks which bits are in inventory, when they were stored, and their condition at the time of storage. This practice not only helps with rotation but also provides valuable data for purchasing decisions. If you consistently find that certain bit sizes or types sit in storage for long periods, you can adjust your procurement quantities accordingly.

Conclusion

Proper storage of tricone bits is a simple but high-impact practice that directly affects your drilling efficiency and operating costs. Clean the bit thoroughly before storage, control the environment to keep moisture and temperature in check, position the bit correctly to avoid bearing damage, protect the threads, and maintain a disciplined inventory rotation system. These steps take only a few minutes per bit but can add significant hours to the bit's total service life.

When sourcing tricone bits, choosing a manufacturer that builds quality into every component — from premium-grade steel and tungsten carbide to advanced bearing and seal designs — gives you a stronger foundation for long-term performance. TY Drill Bits (Xi'an Heaven Abundant Mining Equipment CO.,LTD), an ISO9001-certified manufacturer with over a decade of experience, produces a full range of tricone bits for water well, mining, oil, and geological drilling applications. With a strong export track record and a commitment to quality, TY Drill Bits delivers reliable tools that hold up to demanding conditions — both in the hole and on the rack.