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    High-Performance Oil-Based Mud Thinner & Rheology Modifier from China Suppliers and Factory - UBDrill-261
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    Oil-Based Mud Rheology Modifier Thinner.png

    High-Performance Oil-Based Mud Thinner & Rheology Modifier from China Suppliers and Factory - UBDrill-261

    UBDrill-261 is a premium oil-based mud thinner and rheology modifier specifically engineered for oil-based mud (OBM) systems. Manufactured in China, this high-performance product effectively reduces viscosity, enhances flow properties, and significantly improves drilling efficiency, even in high-temperature conditions. As a reliable solution from trusted suppliers and factories, UBDrill-261 is your go-to choice for optimizing drilling operations and achieving superior results in the field
    • Density (20°C) 0.85 – 0.95 g/cm³
    • Flash Point ≥ 65°C
    • Stable up to 400°F (204°C)
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    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), % 70 Min

    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)

    Q What is UBDrill-261 and how is it prepared?
    UBDrill-261 is an oil-based mud (OBM) thinner. It is prepared by diluting it with a specific amount of white oil during use.
    Q How does UBDrill-261 improve drilling efficiency?
    It effectively controls the increase in rheological parameters (such as static and dynamic shear) caused by ultrafine drilling cuttings. This prevents reductions in drilling speed and excessive pump pressure.
    Q Is UBDrill-261 suitable for high-temperature wells?
    Yes, UBDrill-261 is highly stable at temperatures up to 400 °F, making it suitable for both high-temperature and high-pressure (HTHP) well applications.
    Q What is the recommended dosage for UBDrill-261?
    The recommended dosage is 0.1% to 0.25% (v/w) for low-density systems and 0.5% to 1% for high-density systems. A pilot test is recommended to determine the optimal dosage.
    Q What are the packaging options and storage requirements?
    UBDrill-261 is supplied in 55-GAL drums. It should be stored in a dry, well-ventilated area with the container kept closed, away from heat, sparks, flames, and incompatible materials.

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