Sulfonated Phenolic Resin (SMP-II) — laboratory sample bottle
Laboratory sample — does not represent commercial supply packaging.

Sulfonated Phenolic Resin (SMP-II)

Fluid Loss Control
Family: Sulfonated Phenolic Resin (SMP-II) Code: SMP-II Product last updated: January 2026

Supply evaluation upon request — Legal Notice & Commercial Scope

Description

Sulfonated phenolic resin SMP-II is anionic water-soluble polyelectrolyte, high-temperature-salt-resistant drilling-fluid fluid-loss reducer. Combined with sulfonated lignite, sulfonated tannin and sulfonated asphalt to formulate "tri-sulfonated" mud system for high-temperature deep-well operations.

Characteristics declared for the product and stated conditions. Selection and performance subject to technical evaluation of the fluid system.

Appearance

Free-flowing powder.

Properties

Sulfonate groups are grafted onto benzene rings linked by carbon-carbon bonds for high-temperature resistance. Sodium sulfonate groups on ortho-para positions of phenolic hydroxyl provide strong hydration and high bond energy for water solubility, salt-resistance, calcium-resistance and HT-HP fluid-loss reduction.

Specifications

ParameterValue / LimitUnitTest Conditions
AppearanceFree-flowing powder——
Moisture≤10.0%—
Mass fraction on dry basis≥90.0%—
Water-insoluble matter≤8.0%—
Cloud point salinity (calculated as Cl⁻)≥160.0g/L—
Apparent Viscosity≤50.0mPa·s—
HT-HP Fluid Loss≤35.0mL—
Technical note: Cloud point salinity (≥160 g/L Cl⁻) evidences high-salinity resistance, but does not equate to a specific water-system recommendation.

Application

Deep-well mud additive for HT-HP filtration-control, salt-calcium resistance and filter-cake friction-coefficient reduction. Improves borehole stability, anti-caving and anti-sticking performance. Recommended dosage: 1%–3%.

Dosage Guidance

1%–3%.

Indicative range from technical documentation. Final dosage requires testing and evaluation of the fluid system.

Packaging & Storage

3-in-1 composite bags with PE liner, net 25 kg/bag. Cool dry ventilated storage. Avoid skin-eye contact; rinse with plenty of water. Keep away from fire.

Available Documentation

Catalog technical data sheet: available. Request the applicable SDS and CoA; availability subject to confirmation.

Request technical data sheet, SDS and documentation applicable to the product and batch