OBM Additives
Oil-Based Mud(OBM) Rheology Viscosifier
Product introduction
UBDrill-242 is a polymeric material acting as rheology modifier for oil-base mud.
※ UBDrill-242 is a polymeric rheology modifier designed for oil-based drilling fluid (OBM) systems. It is primarily used to enhance low-shear-rate viscosity (LSRV) and yield point (YP) of invert emulsion systems while maintaining a minimal impact on plastic viscosity (PV).
※ UBDrill-242 is a polymeric rheology modifier designed for oil-based drilling fluid (OBM) systems. It is primarily used to enhance low-shear-rate viscosity (LSRV) and yield point (YP) of invert emulsion systems while maintaining a minimal impact on plastic viscosity (PV).
※ The product is engineered to improve low-end rheology and suspension capacity without significantly affecting other key mud properties such as emulsion stability and HTHP fluid loss. It is fully compatible with standard oil-based mud additives used in modern drilling fluid systems.
Technical Index
Flash point, ℃ |
> 75 |
Pour Point, ℃ |
< -5 |
Specific gravity(20℃) |
0.85 ~ 0.96 |
Odor |
Slightly mineral oil |
Applications/Functions
※ High-performance oil-based drilling fluid systems (OBM / SBM)※ Deep and high-temperature drilling operations※ Weighted mud systems requiring improved suspension stability※ Wells prone to barite sag or poor solids transport
※ Extended static or long-reach drilling sections
Recommended Handling
A typical dosage is according to the ratio of water/oil and density of OBM, but a pilot test is required for optimal results.
All personnel handling this material must handle it as an industrial chemical, wearing protective equipment and observing the precautions as described in the Material Safety Data Sheet (MSDS).
Packaging and Storage
※ 200L/Drum
※ Store in dry, well-ventilated area. Keep container closed. Keep away from heat, sparks and flames. Store away from incompatibles. Follow safe warehousing practices regarding palletizing, banding, shrink-wrapping and /or stacking.
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Base Oil Type (Diesel / Mineral / Synthetic)
Different base oils affect product compatibility and performance.
This helps us ensure the viscosifier works effectively in your system.
Oil-to-Water Ratio (O/W)
The ratio determines the fluid structure and directly impacts rheology behavior.
Proper adjustment depends on this balance.
Brine Type and Concentration (e.g., CaCl₂, NaCl)
Salinity influences fluid stability and rheological response.
It also affects how the product interacts within the emulsion system.
Lime (CaO) Content
Calcium plays a key role in activating the rheological structure.
This information is critical for proper product performance.
Mud Weight (Density)
Higher-density systems are more prone to solids settling (e.g., barite sag).
This helps us determine the required treatment level.
Temperature Conditions (BHCT/BHT)
Temperature affects fluid stability and additive efficiency.
We use this to ensure performance under downhole conditions.
Current Rheological Data (PV, YP, Gel, 6/3 rpm)
These parameters show the current fluid condition.
They allow us to evaluate what adjustments are needed.
Main Challenge or Objective
(e.g., barite sag, poor hole cleaning, low viscosity)
Understanding your specific issue helps us provide targeted solutions.
Existing Additives in the System
(e.g., emulsifiers, organophilic clay, fluid loss additives)
This ensures compatibility and avoids negative interactions.
Application Type
e.g., vertical, directional, horizontal, ERD wells)
Different well profiles require different rheological properties.
Why This Information Matters
Oil-based drilling fluids are complex systems, and rheology modifiers must be carefully matched to the specific formulation and operating conditions.
By understanding your system in detail, we can:
Recommend the most effective product
Optimize dosage for cost efficiency
Ensure stable and reliable performance
Minimize field trial risks