High-performance drilling hardware engineered to complement advanced double tube core barrels in structural geological sampling.
In critical infrastructure, mining exploration, and geological baseline assessment, maximizing the Rock Quality Designation (RQD) and sample integrity is paramount. Double core barrels resolve the major limitation of single-tube barrels: friction and erosion damage to the core sample.
By separating the outer rotating tube from an inner, stationary sample collection tube, double core barrels eliminate torsional friction against the core. This is essential for recovering weak, highly fractured, or soft sedimentary strata without sample destruction.
Fluid routes between the inner and outer tube, directing pressurized water/bentonite mud directly to the kerf area. This prevents raw fluid from washing away fragile samples, dramatically improving the recovery yield of loose soils and alluvial composites.
As a veteran ODM, we adapt diameter sizing (e.g., T2, T6, and custom wireline configurations), thread profiles, and head configurations. This ensures matching parameters with specific drilling rig torque ranges, rotational velocities, and custom drill bit matrix chemistries.
A certified international engineering and construction equipment powerhouse providing fully tailored deep foundation and geological core extraction solutions.
Beijing Sinovo International & Sinovo Heavy Industry Co. Ltd. are ISO9001: 2015 certified manufacturers of drilling rigs and piling rigs. The backbone members of our company have been actively serving the construction machinery and geological exploration industries since the early 1990s. With over 20 years of persistent innovation, we have formed strategic alliances with premier equipment manufacturers globally and inside China.
In 2008, the establishment of TEG FAR EAST company in Singapore strengthened our presence in Southeast Asia. By 2010, our heavy machinery and pile engineering production base in the Hebei Xianghe Emerging Industry Demonstration Zone expanded to cover 67 mu, representing a 120 million yuan investment. Our primary 7,800 square meter factory is optimally situated 100 kilometers from the Tianjin port, reducing overall export logistics costs.
Double core barrels are indispensable in modern geotechnical exploration, mining, and heavy infrastructure engineering. They serve as the critical interface between geological formations and site evaluation.
Before constructing high-rise foundations, suspension bridges, or deep subway systems, geotechnical engineers require intact rock samples. Standard single-barrel retrieval often grinds core samples to gravel, causing inaccurate engineering assessments. Our double-tube systems maintain intact profiles, revealing hidden fault lines, shear zones, and moisture-sensitive clay lenses.
In exploratory mining (such as lithium brines, hard rock gold, and copper deposits), precise assay boundaries require clean samples. SINOVO's double core barrels limit the contamination of sample cores by drilling muds and recirculated fluids. This enables precise metallurgical mapping of deposit boundaries.
As cities expand vertically, deeper underground basements are required. Double core barrels provide the geologic profiles needed to design anchoring systems, diaphragm walls, and high-capacity bored piles. This helps prevent soil settlement or collapse in adjacent structures.
Ensuring total compliance with international industrial standards through robust quality control systems.
Main Production Assembly Line
Advanced Precision CNC Center
Rigorous Hydraulic Diagnostics
Our executive management has spent over 30 years in construction machinery manufacturing. SINOVO places immense value on personnel training and research and development, operating a dedicated technology center that holds numerous global patent projects. We maintain sales, design, and logistics networks in Singapore, Dubai, and Algiers to deliver direct service, technical support, and spare parts globally.
We actively showcase our latest patented double core barrels, micro pile rigs, and rotary drill advances at top industrial expos worldwide. Our technical experts regularly interface with global clients to configure custom tooling setups for regional geologies.
Authorized manufacturing quality management systems certification.
Fully verified for European health, safety, and environmental protection rules.
State-rated for continuous design innovation and advanced material processing.
Different geological profiles demand customized core extraction approaches. SINOVO's ODM division develops optimized layouts for specific geological regions.
Geotechnical Challenge: Unconsolidated formations erode easily under standard drilling fluid flow, resulting in poor core recovery.
ODM Custom Solution: Double core barrels configured with bottom-discharge channels. These channel pressurized fluids outward instead of directly down, shielding fragile soils from high-velocity washouts.
Geotechnical Challenge: Highly fractured formations can rotate with the barrel, causing blockages and wear.
ODM Custom Solution: Precision bearing configurations within the swivel head maintain absolute isolation of the inner tube. This protects fractured blocks from shifting or locking inside the barrel.
Geotechnical Challenge: Transitions between hard and soft rock layers cause vibrations, which can fracture samples.
ODM Custom Solution: Heavy-walled outer tubes combined with balanced inner assemblies absorb vibrations, maintaining sample stability during geological changes.
| Series Class | Outer Tube Diameter (mm) | Inner Tube Diameter (mm) | Core Diameter (mm) | Primary Geological Use Case |
|---|---|---|---|---|
| T2 Series (e.g., T2-76) | 76.5 mm | 64.5 mm | 62.0 mm | Thin-walled, optimal for fast penetration in homogenous strata. |
| T6 Series (e.g., T6-101) | 101.0 mm | 87.0 mm | 84.0 mm | Thicker design, built for highly fractured rock & abrasive formations. |
| Wireline Series (HQ) | 96.0 mm | 73.0 mm | 63.5 mm | Designed for deep-hole exploration, eliminating rod tripping. |
| Wireline Series (PQ) | 122.6 mm | 96.0 mm | 85.0 mm | Large-diameter sampling, maximizing recovery rates in fragile layers. |
Ensuring reliability and technical support at every step of your project, from initial contact to on-site operations.
We establish complete service support to ensure users operate our tooling systems with confidence.
Experienced technical experts supervise all aspects of design and manufacturing.
Includes free technical configuration, operator training, and maintenance during the warranty period.
SINOVO's continuous R&D programs ensure our geological tools adapt to evolving mining and construction engineering standards.
We are piloting smart core barrels equipped with integrated sensors. These sensors monitor internal temperatures, vibrations, and barrel wear in real-time, helping drilling teams plan maintenance and prevent downhole failures.
Our metallurgy team continues to refine diamond impregnation formulas. By matching powder matrix chemistry to specific rock hardness scales, we improve penetration rates and extend tooling life in highly abrasive geological formations.
To support sustainable exploration, we design core barrels that run efficiently with biodegradable vegetable-based lubricants and water-saving polymer fluids, minimizing environmental footprint.
SINOVO drilling equipment and high-recovery core barrels are proven across diverse environments worldwide.
Heavy infrastructure foundation projects in Bangladesh.
Arid, high-temperature sandstone coring operations in Saudi Arabia.
Urban subway foundation profiling in Singapore.
Hydrostatic Equipment in Bangladesh
Rotary Rig Operations (Saudi Arabia)
Deep Drilling Configurations (Saudi Arabia)
Engineered systems for deep foundation support, mining, and micro-piling applications.
A versatile, stable engineering rig designed for high-precision, large-diameter drilling. Ideal for micro-piling, anchoring, casing, and blasting holes across diverse geological formations.
Utilizes high-pressure hydraulic oil and wedge principles to generate thousands of tons of splitting force. Efficiently splits boulders and separates hard ore from rock formations.
A compact, self-erecting rig featuring advanced electronic control. Standard configuration includes friction or interlocking Kelly bars, with options for Continuous Flight Auger (CFA) setups.
Designed for slope support, foundation reinforcement, tunnel grouting, and blasting hole construction. Supports wireline core drilling, down-the-hole hammer operations, and single/double-tube rotary grouting.
Optimized for soft ground treatment, water-blocking, and foundation reinforcement. Equipped with a 3-ton crane arm, it supports multi-tube vertical and horizontal construction configurations.
Built on a loader chassis, this system is optimized for installing utility poles, photovoltaic piles, and shallow foundation projects.
Supports both air and fluid drilling methods. Ideal for anchoring, slope support, rotary jet grouting, micro-piling, and geotechnical core recovery projects.
Features a high-power top impact system that enables effective percussion drilling in sand, gravel, and collapsing formations without requiring an air compressor.
A compact, agile rig built for small-diameter (50-90mm) drilling. Optimized for confined spaces, tunnel construction, and urban sites where standard rigs cannot operate.
Explore answers to common questions about selecting, operating, and troubleshooting double core barrels.
Single tube barrels rotate in direct contact with the core sample, exposes it to fluid wash, making them suitable only for hard, consolidated rock. Double tube barrels feature a stationary inner tube that protects the core from both friction and fluid erosion. Triple tube barrels add a split inner metal liner, providing maximum protection for extremely soft, loose, or clay-heavy soils during sample extraction.
The inner and outer tubes are connected via a specialized bearing swivel head. As the drill rig rotates the drill string and outer tube to cut rock, the bearings isolate the inner tube. This keeps the inner tube stationary, preventing torsional friction from twisting or breaking the core sample.
As a rule of thumb, use a softer matrix alloy for hard, fine-grained rock formations (such as granite or basalt) so that the matrix wears away to expose fresh diamond grit. Conversely, use a harder matrix alloy for soft or highly abrasive rocks (such as sandstone or limestone) to prevent premature bit wear.
Core slippage typically occurs due to a worn core lifter, an incorrectly sized lifter case, or improper drilling pressure. Ensuring the core lifter matches the core diameter and adjusting downward feed pressure before breaking the core helps secure the sample within the inner tube.
In standard configurations, drilling fluids wash over the face of the core. In loose soils, this fluid velocity can wash away the sample. Bottom-discharge routing directs fluids through internal pathways in the outer bit shell, bypassing the core face to keep the sample intact.
SINOVO offers fully customized engineering services. We adjust tube lengths, diameter dimensions (complying with DCDMA, metric, or wireline standards), and thread styles. We also configure custom fluid bypass paths and design specialized matrix bits to match unique rig parameters and geological conditions.
Explore our comprehensive lineup of engineering drilling and geological core extraction platforms.
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