Lignite Resin (SPNH) – Premium Drilling Fluid Additives
一. PRODUCT OVERVIEW
Lignite Resin (SPNH), one of the reliable premium drilling fluid additives, is a high-efficiency modified organic drilling fluid additive refined from natural lignite through sulfonation, condensation and chemical modification. The product is a black or dark brown free-flowing granular powder with good water solubility. It integrates high-temperature filtration reduction, viscosity reduction and anti-collapse performance. SPNH has strong adsorption capacity and colloidal stability, widely used in high-temperature deep wells, high-salinity formations and complex water-based drilling mud systems.
二. PRODUCT FEATURES
- Excellent High-temperature Filtration Reduction: Effectively reduce API and high-temperature high-pressure filtration loss, form compact and thin filter cake to prevent mud leakage in complex formations.
- Good Viscosity Reducing Property: Disperse mud clay particles, reduce shear viscosity and gel strength of drilling fluid, improve mud rheology for easy pumping.
- Strong Anti-collapse Ability: Adsorb on shale surface to form protective film, inhibit hydration expansion of mud shale and stabilize wellbore.
- Superior Compatibility: Perfect compatibility with conventional drilling additives such as K-PAM, CMC, sulfonated lignite asphalt powder and xanthan gum without adverse chemical reactions.
- High Temperature & Salt Resistance: Stable performance under high temperature up to 180℃, excellent tolerance to saturated brine and high mineralized water.
- Environmentally Friendly: Low toxicity, non-corrosive, easy to biodegrade, compliant with international environmental protection standards for oilfield exploitation.
三. TECHNICAL SPECIFICATIONS
TEST ITEM | TECHNICAL INDEX |
Appearance | Black & Dark Brown Granular Powder |
Moisture Content (%) | ≤10.0 |
Sieve Residue (20 Mesh, %) | ≤5.0 |
Water Insoluble Matter (%) | ≤8.0 |
Sulfonation Degree (%) | ≥35.0 |
High Temperature Filtration Loss (mL) | ≤25.0 |
Temperature Resistance (℃) | ≤180 |
pH Value | 7.0 – 9.0 |
四. APPLICATION FIELDS
1. PETROLEUM DRILLING INDUSTRY
Mainly used as high-temperature filtrate reducer and viscosity reducer for water-based drilling fluids. It is suitable for deep wells, ultra-deep wells, high-pressure oil and gas layers, and highly mineralized brine mud systems to stabilize mud performance under harsh formation conditions.
2. GEOLOGICAL EXPLORATION & WELL DRILLING
Applied in geological exploration and water well drilling to reduce mud water loss, optimize filter cake quality, and effectively prevent well wall collapse in complex stratum.
3. INDUSTRIAL SLURRY TREATMENT
Used for viscosity adjustment and water purification of industrial slurry, improving suspension stability of solid particles and reducing slurry filtration loss.
五. USAGE METHOD
Slowly add SPNH powder into the circulating drilling mud under continuous stirring. The recommended dosage ranges from 1.0% to 3.0%. For high-temperature and high-salinity formations, appropriately increase the dosage. It is recommended to add slowly to avoid agglomeration for better dissolution effect.
六. PACKAGING & STORAGE
- Packaging: 25kg per kraft paper bag with plastic inner bag, or customized packaging as customer requirement.
- Storage Condition: Sealed and stored in dry, cool and ventilated warehouse, keep away from moisture, rain and direct sunlight.
- Shelf Life: 24 months under original packaging and normal storage environment.
- Transportation Note: Belongs to general chemical goods, non-dangerous goods; avoid heavy extrusion and mixing with corrosive substances during transportation.
七. SAFETY INSTRUCTIONS
- Avoid long-term skin contact and inhalation of dust; wear protective masks and gloves during operation.
- In case of eye contact, rinse with plenty of clean water immediately.
- Keep away from strong oxidants and high-temperature fire sources.
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