GB-Drill
GB-Drill is a high-quality OCMA-grade drilling bentonite, specially processed to develop exceptional rheological properties required for drilling systems. This specialized bentonite powder is designed for preparing drilling fluids, ensuring high borehole wall stability, regulating drilling mud viscosity, and preventing circulation losses. Thanks to its properties, GB-Drill is an ideal solution for drilling operations in the oil, gas, and geotechnical industries. It is suitable for mixing with polymers and other additives. Laboratory tests have been conducted in accordance with ISO13500/API Spec.13A/API RB 13B (22.5 g / 350 ml).
GB-DrillPRODUCT BENEFITS
Stability of the well walls
Ensures the formation of a strong layer that protects the well from collapses and deformations.
Viscosity control
Allows for effective control of the rheological parameters of the drilling fluid.
Prevention of circulation losses
Minimises the risk of fluid loss in highly permeable formations.
Improved well cleaning
Increases the efficiency of drilled rock removal, which ensures well cleanliness.
Packaging and delivery
The product is supplied in 25kg bags or 1 tonne big bags. Delivery options are available throughout Europe and for export.
Professional technical support
We are ready to provide comprehensive support for all questions regarding the use of our GB-Drill product in drilling operations. Contact us for detailed recommendations and technical documentation.
PRODUCT PROPERTIES
| Parameter | Unit | Normal (64 kg/m³ suspension) | Max (50 kg/m³ suspension) |
|---|---|---|---|
| Montmorillonite, min | % | ≥75 | ≥75 |
| Moisture, max | % | ≤12 | ≤12 |
| Filtration, max | cm³ | 16 | 15 |
| Apparent viscosity, min | mPas | 32 | 35 |
| Plastic viscosity | mPas | 8 - 10 | 9 - 11 |
| pH | 8 - 10 | 8 - 10 | |
| Milling | 80% less than 0,056mm | 80% less than 0,056mm | |
| Yield | m³/t | ≥16 | ≥20 |
Questions about this product
What is GB-Drill?
GB-Drill is OCMA-grade drilling bentonite from GEOBENT for drilling fluids in the oil, gas and geotechnical industries. It can be mixed with polymers and other additives. Laboratory tests follow ISO 13500 / API Spec 13A / API RB 13B (22.5 g / 350 ml).
Which grades and values does GB-Drill list?
The English GB-Drill sheet lists two grades: Normal (64 kg/m³ suspension) and Max (50 kg/m³ suspension). Shared values: montmorillonite min. ≥75%, moisture max ≤12%, pH 8–10, milling 80% less than 0.056 mm. Normal / Max: filtration max 16 / 15 cm³, apparent viscosity min. 32 / 35 mPas, plastic viscosity 8–10 / 9–11 mPas, yield ≥16 / ≥20 m³/t. The Polish sheet lists yield min. 18 / 22 m³/t. These are catalog values, not a field dose.
How does the industry prepare a bentonite drilling fluid?
Typical practice for oil, gas and geotechnical drilling fluids: mix bentonite with water and often let it hydrate before adding polymers; hard water (calcium) is usually treated with soda ash because calcium limits swelling; viscosity is checked with a Marsh funnel and the concentration and additives are adjusted to the formation. A starting bentonite concentration in freshwater mud is often roughly 20–60 kg/m³ in industry practice. The 64 kg/m³ (Normal) and 50 kg/m³ (Max) suspensions on the GB-Drill sheet are the ISO 13500 / API test conditions, not a GEOBENT field dose. These are typical industry recommendations, not a GEOBENT guarantee. The choice depends on the conditions — contact GEOBENT and we will prepare a recommendation and a free sample.
How do I order GB-Drill?
Order GB-Drill by email at info@geobent.pl. Questions: +48 573 588 382. Shipment is in bulk, 25 kg bags or 1 t big-bags, the minimum order is one full truck, lead time is from 2 weeks, and delivery is across Europe and for export. GEOBENT samples are always free.