Introduction
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DYFD-1 is an oil-soluble plugging / bridging agent made from selected natural polymer materials, designed to provide leakage prevention and plugging performance in wellbore fluids. It features optimized particle size distribution and forms a robust sealing layer in micro-fractured formations, helping reduce fluid invasion and mudcake permeability. DYFD-1 has a softening point of 60–130°C (140–266°F) and is engineered to be highly soluble in oil, allowing it to temporarily block hydrocarbon zones and then dissolve upon oil contact for self-removal—supporting reservoir protection during drilling and intervention operations.

Applications / Functions
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• Used in reservoir-protective drilling fluids, completion fluids, workover fluids, and kill fluids

• Provides bridging and plugging for micro-fractures and seepage losses

• Helps reduce fluid loss and formation invasion by building a stable sealing structure

• Can be combined with other LCM materials for larger-pore / more severe losses (compatibility check recommended)

Advantages
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• Oil-soluble design supports temporary plugging with self-removal after oil contact

• Builds a strong sealing layer to enhance wellbore integrity in fractured intervals

• Works effectively as a bridging + plugging component in multi-material LCM blends

• Good compatibility with common drilling-fluid additives

Recommended Treatment
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Typical dosage: 

• Add under circulation and increase stepwise based on loss severity, mud type, and formation conditions.

• Lab optimization is recommended to determine the most effective treatment level and any LCM blend ratio.

Package
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• 25 kg sack

• Custom packaging available upon request