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High-Performance Oil-Based Mud Rheology Modifier & Thinner from China Suppliers and Factory for Efficient Drilling
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High-Performance Oil-Based Mud Rheology Modifier & Thinner from China Suppliers and Factory for Efficient Drilling

UBDrill-261 is a top-tier oil-based mud thinner and rheology modifier specifically designed for oil-based mud (OBM) systems used in drilling applications. As a product of a leading factory in China, UBDrill-261 effectively reduces viscosity while improving flow characteristics, thereby significantly enhancing drilling efficiency even at high temperatures. Our product is the preferred choice among suppliers seeking reliable solutions for optimizing drilling operations. Experience the benefits of UBDrill-261 for superior performance in your OBM systems
  • Density (20°C) 0.85 – 0.95 g/cm³
  • Flash Point ≥ 65°C
  • Stable up to 400°F (204°C)

Product Introduction

secondary emulsifier-UBDrill-422

UBDrill-261 is a kind of OBM thinner and then diluting them with a certain amount of white oil while using. During the drilling process, fine drill cuttings particles will disperse and accumulate in the drilling fluid. Excessive solid phase can rapidly lead to an increase in rheological parameters, including static and dynamic shear.

An increase in rheological parameters will reduce drilling speed and increase pump pressure until it exceeds the fracture pressure of the formation.

The addition of UBDrill-261 diluents to oil-based mud effectively solves the problem of increased rheological parameters caused by ultrafine drilling cuttings in the absence of efficient solid control equipment.

Technical Index

Appearance Light yellow to brown liquid
Pour Point, °C ≤0
Density, g/cm3/20℃ 0.85~0.95
Retention value of demulsification voltage(1%dosage), % 70Min

Applications/Functions

multizone completion downhole
  • Functions as thinner and reduce drilling fluid viscosity.
  • Used for high-temperature and high-pressure wells.

Advantages

  • Temperatures stable up to 400 °F.
  • Improve the rheology of OBM drilling fluids.

Recommended Handling

  • The recommended low-density dosage is 0.1% to 0.25% (v/w), while the high-density dosage is 0.5% to 1%, but a pilot test is required for optimal results.
  • Avoid contact with eyes, skin, and clothing, otherwise rinse with plenty of water for handling methods and hazardous data, please refer to the Safety Data Sheet.

Packaging and Storage

55-GAL 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.

Frequently Asked Questions (FAQ)

What is UBDrill-261?
UBDrill-261 is a specialized oil-based mud (OBM) thinner. It is designed to be diluted with a specific amount of white oil during application to control mud viscosity and improve rheological performance.
How does UBDrill-261 help solve rheological problems in drilling?
During drilling, fine drill cuttings accumulate and increase static and dynamic shear. UBDrill-261 acts as a diluent to reduce these rheological parameters, preventing reductions in drilling speed and excessive pump pressure that could fracture the formation.
What are the key technical specifications of UBDrill-261?
It is a light yellow to brown liquid with a density of 0.85~0.95 g/cm³ at 20℃, a pour point of ≤0 °C, and a minimum demulsification voltage retention value (at 1% dosage) of 70%.
What is the recommended dosage for UBDrill-261?
The recommended dosage for low-density systems is 0.1% to 0.25% (v/w), and for high-density systems, it is 0.5% to 1%. A pilot test is always recommended to determine the optimal dosage.
Is UBDrill-261 suitable for high-temperature wells?
Yes, UBDrill-261 is highly stable at temperatures up to 400 °F, making it suitable for demanding high-temperature and high-pressure (HTHP) well applications.
How should UBDrill-261 be packaged and stored?
It is packaged in 55-GAL drums. It should be stored in a dry, well-ventilated area with containers tightly closed, kept away from heat, sparks, open flames, and incompatible materials.

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