Organophilic Lignite for Oil-Based & Synthetic-Based Drilling Fluids

millennium energy Resinated Lignite is an organophilic lignite filtration control additive produced via targeted organic modification of natural lignite feedstock. It is formulated for invert emulsion, oil-based and synthetic-based drilling fluid systems. The product is supplied as free-flowing black powder, compatible with standard oil-mud additive packages including emulsifiers, wetting agents, viscosifiers and weighting agents. Its uniform particle grading supports rapid wetting and uniform dispersion through conventional rig mixing equipment and mud hoppers, without pre-slurrying or special mixing protocols required on location.

• Thermally stable up to 400 °F (204 °C) for sustained HPHT downhole service

• Compatible with all mainstream oil-based and invert emulsion drilling fluid systems

• Free-flowing powder for straightforward, controllable addition via mud hoppers

• Compatible with common oil-phase drilling fluid additives

• Lower environmental impact compared with conventional asphalt filtration agents

• Consistent particle grading delivers repeatable filter-cake performance batch over batch

• Minimal rheology disturbance when applied within recommended dosage ranges

The product is modified through amidation and cross-linking reactions with long-chain organic amines, converting inherently hydrophilic lignite into an oil-dispersible colloidal solid. Aromatic backbones carrying phenolic hydroxyl, carboxyl and methoxy functional groups adsorb at oil-water interfaces, reinforcing the interfacial film surrounding internal water droplets. Under HPHT differential pressure, graded solid particles deposit across the wellbore wall and assemble into a thin, compressible, low-permeability filter cake. This physical barrier plugs formation pores and microfractures to restrict filtrate invasion, working synergistically with the system's primary and secondary emulsifiers.

Applications

• HPHT fluid loss control for deep and ultra-deep oil-based and synthetic-based drilling fluids

• Filter cake optimisation for permeable formations to reduce differential sticking risk

• Drop-in replacement for asphalt and gilsonite in existing invert emulsion mud programmes

• Filtration control for hostile HPHT intervals including reactive shale and high-pressure pay zones

Recommended Dosage

• BHT below 300 °F: 2–6 ppb

• BHT above 300 °F: 6–20 ppb

Addition Guidance

Introduce millennium energy Resinated Lignite gradually through the mud hopper while tracking HPHT filtrate volume and cake texture. Final application rate must be validated by laboratory pilot testing matched to the project's base oil, mud formulation and downhole temperature profile.

Advantages

• Preserves emulsion integrity under prolonged high-temperature static and dynamic ageing

• Forms deformable filter cake that adapts to fluctuating borehole pressure conditions

• Eliminates the handling hazards associated with raw asphalt and gilsonite alternatives

• Does not negatively alter electrical stability of invert emulsion muds at proper loading

• Supports stable filtration performance over extended circulation times

Please contact our sales department for sample application, quotation, formal MOQ confirmation and document delivery.