Guide for Selecting and Using TSP Core Bits

Posted 2025-11-07 02:03:05

TSP bits are commonly operated together with high-speed downhole motors. This is because such motors provide greater power to the rock, resulting in penetration rates that are two to three times faster compared to conventional rotary drilling.

TSP core bits

Understanding TSP Technology in Drilling Applications

TSP bits use thermally stable polycrystalline diamond elements as their primary cutting structure. These innovative elements are composed entirely of micron-sized synthetic diamond particles formed into either triangular or cubic prism shapes. This manufacturing process creates an exceptionally durable and thermally stable cutting material ideally suited for challenging geological formations.

When compared to conventional surface-set diamond bits, TSP bits demonstrate several distinct advantages:

TSP bits have substantially larger cutting elements than surface-set bits;
TSP bits have a lower cutter density (less cutting edges per unit area) than surface-set bits;
TSP bits have a greater degree of primary cutter exposure than surface-set bits;
The primary cutting media in TSP bits is synthetic diamond as opposed to natural diamond in surface-set bits;

In all TSP bit configurations, the diamond elements are permanently embedded in a tough, wear-resistant powdered metal matrix body that is fused to a steel tool body, creating a robust drilling tool capable of withstanding extreme downhole conditions.【1】

Optimal Applications for TSP Core Bits

TSP core bits are engineered for abrasive formations with a Mohs hardness of 3 to 5, covering a wide range of rocks commonly encountered in mineral exploration, geotechnical surveys, and civil engineering drilling.

Below are thecommon formation types where TSP bits are most effective:

1. Limestone (Mohs 3–4.5)

TSP core bits excel due to their thermal-resistant, self-sharpening diamond cutters, minimizing heat and wear. They maintain smooth penetration even in dolomitic limestone (Mohs 5), making them ideal for carbonate drilling and formation evaluation.

2. Sandstone (Mohs 4–5)

TSP bits retain sharp edges over long drilling intervals. Optimized cutter geometry and orientation reduce torque fluctuations and vibration, ensuring consistent penetration (ROP).

3. Marble (Mohs 3–5)

TSP bits’ high-strength matrix and thermally stable diamond elements resist edge rounding and impact, enabling efficient drilling with minimal degradation. They are ideal for stone quarrying, underground tunneling, and geotechnical sampling.

Advanced TSP drill bits can operate with power levels increased by 5 to 10 times, far exceeding traditional rotary systems. Their thermal stability, wear resistance, and structural strength make them a key tool in small-diameter, directional, and horizontal drilling applications, suitable for a variety of geological formations—from soft carbonate rocks to abrasive crystalline rocks.【2】

Why Choose TSP Core Bits from ROCKCODE

• Premium Raw Materials: ROCKCODE sources tungsten powders and micron-sized synthetic diamond particles from global leaders. This ensures its consistent quality and reliable performance from the very beginning stage.

• Rich Manufacturing Experience: With over 10 years of production and extensive geological exploration data, ROCKCODE continuously improves its formulations and processes. Enhanced production efficiency allows ROCKCODE to provide high-quality geotechnical core bits with greater cost-effectiveness.

• Custom Design Capability: Our technical team can independently design and customize coring and non-coring bits to meet specific geological formations and client requirements, delivering tailored drilling solutions. eg. semi-round TSP bits; multi-steps TSP bits.

• Technical Consultation: ROCKCODE is pleased to provide professional advice on bit selection, application, and drilling optimization to help you improve efficiency and reduce operational costs.

TSP core bits

ROCKCODE Sample: PQTT 3-Step Triangular TSP Surface-Set Core Bit

→ For more information about ROCKCODE’s TSP Core Bits, please visit: https://www.rockcodebit.com/product

→ Email us at: info@rockcodebit.com

→ Information in this article is for general reference only. For specific drilling projects and drilling bits, please consult qualified professionals. Thank you.