Nourisi® Oilfield-Grade Welan Gum serves as a high-performance rheological modifier and fluid-loss control agent to enhance drilling efficiency, improve suspension capacity, and ensure wellbore stability in challenging oilfield environments.
| Brand | Nourisi ® | Packaging | 25KG/BAG |
| E No. | E418 | MOQ | 1MT |
| CAS No. | 96949-22-3 | Certification | ISO |
| EINECS: | 232-554-6 |
Nourisi® Oilfield-Grade Welan Gum serves as a high-performance rheological modifier and fluid-loss control agent to enhance drilling efficiency, improve suspension capacity, and ensure wellbore stability in challenging oilfield environments.
Exceptional thermal stability with reliable performance maintained, suitable for deep well and high-temperature formations
Superior salt tolerance enabling stable viscosity in high-salinity brines and completion fluids, compatible with monovalent and divalent salts
Robust suspension characteristics preventing settling of weighting materials, cuttings, and cement solids in static and dynamic conditions
Customized rheological profiles tailored for drilling fluids, cement slurries, fracturing, and EOR applications
Full compliance with ISO 13500 and API standards for oilfield chemicals, supported by complete traceability and quality certification
| Items | Specification |
|---|---|
| E No. | E418 |
| CAS No. | 96949-22-3 |
| Aspect, Flavor | Cream to light tan colored free-flowing powder |
| Particle size | Min. 95% through 80 mesh (or customized per request) |
| Rheology | 1% solution in deionized water: ≥1500 mPa·s (Brookfield, 25°C) |
| Loss on drying | Not more than 15.0% |
| pH | 6.5 - 8.0 (1% aqueous solution) |
Nourisi® Oilfield-Grade Welan Gum serves as a high-performance rheology modifier and fluid-loss control agent across various oilfield operations:
Used as a key additive in water-based drilling muds to provide superior viscosity and suspension properties, ensuring effective cuttings transport and wellbore stability in high-temperature, high-salinity environments.
Employed in oilwell cement slurries to control fluid loss, prevent gas migration, and enhance slurry stability under extreme downhole conditions.
Applied in hydraulic fracturing fluids to carry and suspend proppants effectively, improving fracture conductivity and reservoir stimulation efficiency.
Utilized in polymer flooding systems to improve sweep efficiency and mobility control in challenging reservoir conditions, particularly in high-salinity formations.
Incorporated in completion and workover fluids to maintain well control and minimize formation damage during well intervention operations.
Nourisi® Oilfield-Grade Welan Gum demonstrates exceptional technical properties:
Maintains stable viscosity in high-temperature environments
Provides excellent suspension in brines with salt concentrations
Enhances fluid-loss control in cementing and drilling operations under extreme pressure
Offers outstanding compatibility with calcium-based and monovalent/divalent salt systems
Displays robust shear-thinning behavior for efficient pumping and rapid structural recovery
Nourisi® Oilfield-Grade Welan Gum is recognized as a high-performance additive for oilfield operations and complies with the quality and technical specifications established by API (American Petroleum Institute) and ISO (International Organization for Standardization) for drilling and completion fluids. The product fully meets the stringent requirements for thermal stability and salt tolerance in extreme downhole conditions, and holds relevant ISO 9001 and ISO 14001 certifications. However, we recommend that users verify this product's compliance with specific local environmental regulations and technical requirements in their operating regions, particularly in the oilfields and basins where the product will be utilized.
25kg kraft bag lined with a polyethylene bag or valve bags, meanwhile, other packaging are available on request. Store away from heat and moisture.

Nourisi Group, as the leading manufacturer and supplier of Xanthan Gum for almost 20 years’ experience since 2006, committed to innovation and continuous improvement, and growing together with our customers globally.
Our R&D team brings deep expertise in food science, nutrition, biology, and chemistry, backed by collaborations with leading university research labs in China. This ensures our solutions are at the forefront of scientific advancement, tailored to meet your unique project needs.
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