The 131B single core barrel is a conventional single core barrel designed for soil investigations in homogeneous formations. Part of the B range, it does not include an inner tube, which makes it especially relevant when full core preservation is not the priority. This lighter architecture simplifies everyday use, eases handling on site, and supports higher coring rates. A single core barrel is often preferred when the main objective is to optimize operating costs while maintaining steady productivity in cohesive, slightly weathered formations.

Why choose the 131B single core barrel?

For repetitive or shallow soil investigations, the 131B single core barrel helps reduce downtime and limit maintenance. Its low cutting-surface bit lowers downhole effort, enabling faster penetration in homogeneous ground. Compared with double tube core barrels, it offers a lower cost per drilled meter thanks to fewer parts and simplified use. This positioning makes it a robust, economical solution for reconnaissance programs where every minute counts.

Technical specifications – conventional single core barrel

• Type: single core barrel, B range
• Available diameters: Ø46 mm to Ø146 mm, including the 131B model
• Standard lengths: 500 mm, 1,000 mm, 1,500 mm, 3,000 mm
• Core barrel head: available separately for maintenance or custom configuration

Key advantages

• Simplified design: fewer parts for easy handling and quick servicing.
• Low cutting surface: reduced effort and consistent progress.
• Higher cadence: penetration rate suited to homogeneous formations.
• Lower operating cost: cost per meter below that of double core barrels.

Limitations of use

The absence of an inner tube limits the 131B single core barrel to homogeneous ground. In heterogeneous or loose soils, the core can break up during extraction, which may compromise sample reliability. In such conditions, choose a core barrel designed to hold the core in mixed ground.

Typical applications in soil investigations

The conventional single core barrel excels on high-cadence drilling campaigns, repetitive jobs, and modest depths. It integrates easily into an existing fleet and helps stabilize costs while maintaining operational quality consistent with soil investigation work in homogeneous formations. Explore our full range for soil investigation: https://technidrill.com/en/geotechnics/.