The TCS 146 core barrel is a complete wireline coring system designed for top efficiency in mining exploration, geotechnical investigations, and water well drilling. Developed by Technidrill, a French manufacturer renowned for its precision-engineered drilling tools, the TCS 146 stands out for its durability, modular design, and a full range of compatible options that enhance its versatility on the field.

1. Overview of the TCS 146 Core Barrel

The TCS 146 wireline system is available in 1,500 mm and 3,000 mm lengths, offering a robust and reliable solution for professional coring operations. Each set includes:

• A complete core barrel head,
• A precision-engineered inner tube assembly,
• And high-quality outer components designed for efficient sample recovery and longevity.

From the locking coupling to the GEOTECH S outer tube, every element is crafted to withstand tough drilling conditions while maintaining smooth operation and consistent sample integrity.

2. TCS 146 Kits: maintenance and conversion made easy

2.1. TCS 146 core barrel Head maintenance kit

To keep your core barrel in optimal condition, Technidrill provides a TCS 146 head maintenance kit including latches, compression springs, ball bearings, O-rings, and a grease fitting.
This kit ensures consistent performance and extends the equipment’s lifespan even in demanding drilling environments.

2.2. GEOTECH S to TCS 146 conversion kit

The conversion kit allows seamless compatibility between GEOTECH S systems and the TCS 146. It includes the landing ring, adaptor coupling, and complete TCS 146 head, with an optional EUTALOY coating for enhanced wear resistance — perfect for users upgrading their existing setup without a full replacement.

3. TCS 146 Overshot: safe and efficient retrieval

The TCS 146 overshot system is engineered for secure retrieval of the core barrel during or after drilling. Available in both standard and Heavy Duty (HD) versions (weighing up to 40 kg), it ensures fast and safe handling.
Its components include wedges, torsion springs, unlocking bells, and rearming keys (standard or magnetized), all designed for reliability in the harshest conditions.

A dedicated overshot maintenance kit simplifies replacement of worn parts, reducing downtime and ensuring smooth wireline recovery.

4. TCS 146 Non-coring system: maximum versatility

The non-coring version of the TCS 146 offers exceptional flexibility for drilling operations that do not require core recovery. This configuration includes:

• A non-coring coupling and head,
• Compatible drill rod adaptors (PR76 HD 2″3/8 API x 1,500),
• And tricone drill bits for efficient penetration.

The non-coring system easily integrates with the main TCS 146 assembly, allowing operators to switch between coring and non-coring setups with minimal adjustment.

A non-coring maintenance kit is also available, featuring stainless steel springs, locking rings, and latch components for extended service life.

5. Shelby Sampler for TCS 146: Precision in Soft Soil Sampling

The Shelby sampler is specifically designed for undisturbed soil sampling, ensuring accurate geotechnical data. Compatible with the TCS 146 system, it comes in 101.6 mm and 88.9 mm diameters, featuring:

• A complete head assembly,

• Stainless steel sampling tube,

• And protective end caps.

Key technical specifications:

This precision tool provides high-quality, undisturbed samples for laboratory testing and soil classification.

6. TCS 146 Accessories: Complete Your System

Technidrill offers a full range of accessories to complement and enhance the TCS 146 core barrel system:

These components are designed for seamless integration, boosting efficiency and reliability in field operations.

7. Technidrill Expertise: Precision Engineering from France

Manufactured entirely in France, the TCS 146 core barrel reflects Technidrill’s dedication to innovation, quality, and reliability. With over 30 years of experience in drilling systems and a strong presence in mining, geothermal, and geotechnical sectors, Technidrill is a trusted partner for professionals worldwide.

FAQ – TCS 146 Core Barrel

1. What is a wireline core barrel?
A wireline core barrel allows core retrieval via cable without removing the entire drill string, saving considerable time and effort on-site.

2. What are the available lengths for the TCS 146 core barrel?
The TCS 146 comes in 1,500 mm and 3,000 mm versions, adaptable to various drilling depths and formations.

3. Can I convert my GEOTECH S system to TCS 146?
Yes, with the GEOTECH S to TCS 146 conversion kit, you can upgrade easily without replacing your full setup.

4. What’s the purpose of the non-coring system?
The non-coring setup allows drilling without core recovery, suitable for borehole advancement or when core data isn’t required.

5. How does the overshot work?
The overshot retrieves the inner barrel using a cable system, ensuring safe recovery during or after drilling.

6. What is the Shelby sampler used for?
It’s used for collecting undisturbed soil samples, crucial in geotechnical and environmental studies.

The TCS 146 core barrel is more than a drilling tool — it’s a complete, adaptable system built for performance, safety, and precision. From its maintenance and conversion kits to its overshot system, non-coring setup, and Shelby sampler, it provides professionals with unmatched flexibility and reliability. With Technidrill’s proven engineering and global expertise, the TCS 146 stands as a benchmark in modern wireline coring technology.

Discover the TCS 146 in action on site : https://youtu.be/WmyqmMIu-gg

Discover full range for your mining exploration drilling: https://technidrill.com/en/mining-exploration/

Ref. : 68.G430010