12-1-4-iadc217-tricone-bit

12-1-4-iadc217-tricone-bit
12 1/4” IADC217 Tricone Bit

Product Name: 12 1/4 Inch IADC 217 JZ Kingdream TCI Insert Teeth Tricone Rock Bit
Size: 12 1/4″ (311.1mm)

The 12 1/4 Inch IADC 217 JZ Kingdream TCI Tricone Rock Bit is a high-performance drilling tool designed to tackle medium-hard to hard formations with high compressive strength and abrasiveness. Manufactured in compliance with the SY/T5164 industrial standard, this tricone bit is equipped with robust features, making it highly suitable for demanding applications in oil and gas exploration, water well drilling, geothermal drilling, and mining.

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Type and Application

This bit is categorized under the IADC 217 code, which signifies that it is a TCI (Tungsten Carbide Insert) tricone bit specifically optimized for medium-hard formations with high compressive strength and strong abrasiveness. The IADC 217 code suggests a softer tooth structure relative to higher-numbered IADC bits but built to handle rocks like limestone, dolomite, sandstone, and chert, where hardness and abrasiveness coexist.

The bit is ideal for drilling applications that require durability, sustained penetration rates, and minimal downtime due to wear or damage. It performs exceptionally well in formations where conventional steel-tooth bits would quickly erode, offering a reliable solution for long and uninterrupted drilling runs.

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Cutting Structure: TCI Insert Teeth

This tricone bit uses Tungsten Carbide Inserts, engineered for high wear resistance and thermal stability. These inserts are strategically positioned on each of the three cones to deliver effective rock breaking while withstanding high-impact conditions. The insert geometry and placement ensure maximum penetration and durability, making the bit capable of maintaining consistent performance even in abrasive rock environments.

The TCI inserts are especially well-suited to formations where traditional cutting teeth might suffer from rapid erosion, helping operators reduce tool changeovers and drilling interruptions.

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Bearing System: Rubber Sealed Bearing

The rubber sealed journal bearing is a key feature of this bit, contributing significantly to its lifespan and operational reliability. The sealed bearing system is internally lubricated, ensuring reduced friction and smooth cone rotation under heavy loads and extreme conditions. The rubber seals keep debris and drilling fluids out of the bearing assembly, preserving internal cleanliness and efficiency.

This bearing design supports consistent performance over extended drilling intervals, even in high-torque and high-pressure environments typical of hard formation drilling.

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Thread and Connection

The bit comes with a 6 5/8″ API Regular (Reg) pin, a widely used connection type in the drilling industry. The API Reg thread ensures compatibility with most standard drill strings, making the bit easy to integrate into existing systems. This robust threading provides a secure and leak-resistant connection, critical for handling the high stresses of deep and abrasive drilling.

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Gauge Protection

To maintain borehole diameter and reduce sidewall wear, this bit includes gauge protection features such as wear-resistant TCI inserts along the outer edge and hardfacing treatments. These additions extend the bit’s life by preserving its cutting diameter and improving stability in the borehole. Enhanced gauge protection also aids in reducing deviation and maintaining straight, smooth hole profiles.

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Operating Parameters

The bit is designed to operate effectively within a Weight on Bit (WOB) range of 0.70 to 1.20 KN/mm and a rotational speed (RPM) range of 70 to 40 r/min. These parameters reflect the bit’s focus on strength and slow, steady progress in tough formations. Maintaining optimal WOB and RPM ensures maximum efficiency and prolongs the life of both the bit and the supporting equipment.

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Physical Characteristics

With a weight of approximately 100 kg, the 12 1/4″ TCI tricone bit is a heavy-duty tool engineered for industrial-grade drilling tasks. Its weight contributes to bit stability and cutting pressure, allowing it to perform effectively in both vertical and directional drilling operations.

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Industry Compliance

The bit is manufactured under the SY/T5164 industrial standard, ensuring that it meets industry-recognized benchmarks for quality, durability, and performance. Products meeting this standard have been tested for structural integrity, bearing performance, and material hardness, making this bit a dependable option in professional drilling operations.

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Conclusion

The 12 1/4 Inch IADC 217 JZ Kingdream TCI Tricone Rock Bit is a rugged and efficient drilling tool built for medium-hard and abrasive formations. With its TCI insert teeth, rubber sealed bearings, API Reg connection, and gauge protection, it offers long-lasting performance, reduced downtime, and consistent penetration. Whether you’re working in limestone, sandstone, dolomite, or chert, this bit delivers the strength and reliability needed for demanding drilling projects.