CORE BARREL for Foundation Drilling

In foundation drilling, the core barrel cuts an annular groove in hard rock to weaken its structure, making it easier to fracture and remove. Unlike geological core barrels used for sampling, this method focuses on efficiently breaking and extracting rock to enhance drilling efficiency.

RB-CB

Roller Bit Core Barrel

– Core Barrel with Roller Bit, designed to cut through rock formations with uniaxial compressive strength (UCS) of 80MPa to 350MPa and high RQD, the Roller Bit Core Barrel offers a penetration rate of 300mm to 800mm per hour, depending on soil conditions.

       – Compared to core barrels with bullet teeth, the RB-CB enhances penetration rates, reduces drilling chatter, and minimizes strain on drilling rigs.

       – Available in both bolt-on and welding types.

BT-CB

Bullet Teeth Core Barrel

– Core Barrel with Round Shank Chisel (RSC) is widely used in piling and foundation projects for medium rock drilling where conventional rock augers are less efficient. It is suitable for rocks with a uniaxial compressive strength (UCS) of up to 100 MPa.

       – In some cases, contractors also use the RSC Core Barrel to break and extract rock cores, utilizing a wedge plate welded inside the barrel for enhanced extraction.