96949-22-3

  • Product Name:Welan gum
  • Molecular Formula:
  • Purity:99%
  • Molecular Weight:0
inquiry the lastest price

Product Details;

CasNo: 96949-22-3

Quality Manufacturer Supply Top Purity Welan gum 96949-22-3 Cheapest Price


Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of viscosity at elevated temperatures. Welan Gum exhibits superior temperature stability over 200° F in fresh water and low pH fluids. Welan Gum is a tan colored dry powder with a density of 26.25 lbs/ft³. Welan Gum is used in various industries where high molecular weight biopolymers are useful.
 

Physical requirements:

 

Appearance: white to cream color powder
Odor mild
pH: 7.0-9.0
Bulk density: 26.25 lbs./ ft3 (500-700kg/m3)
Specific Gravity: 1.45
Particle Size: 90% pass 80 mesh
Viscosity

0.66% in Dl water

by Fann 35 at 70ºF

0.66% in Dl water

by Fann 35 with 1.0 spring at 185ºF

300rpm 39-49 37-47
200rpm 33-43 32-42
100rpm 29-37 28-35
6rpm > 17 > 17
3rpm > 16 > 16

 

Warm wheel glue has the following characteristics:

 

Higher viscosity at low concentrations

 

Higher viscosity at low speed

 

Excellent water holding capacity

 

Special stability under high salt conditions

 

high temperature resistance

 

Excellent rheological properties

 

Items Specification
Appearance Off white powder
Viscosity (1% H2O,, 25℃) mpa.s 1500-3500
Loss on drying % 6.0-16.0
Ash % ≤13

 

Packaging 1kg-15kg packing 2 PE bag inside + 1 foil bag outside in carton
25kg-50kg packing 2 PE bag inside + 1 foil bag outside in drum
Other packing Customized packing
Drum Size D38cm*H60cm or customized, 25 kg/ drum
Shipping 1-50kg International Express Fast and convenient Door to Door
50-500kg Air Transportation Fast and cheap To Air Port
Above 500kg Sea Transportation Cheap and convenient To Port

Welan gum(Cas 96949-22-3) Usage

Description

Welan gum represents a versatile biopolymer with multifaceted applications across diverse industrial sectors, particularly in oil and gas exploration, construction, and manufacturing processes. Its unique rheological properties and temperature stability make it an invaluable additive for enhancing the performance and functionality of numerous industrial formulations.

Uses

Oil and Gas Industry: Welan gum serves as a versatile fluid loss additive (viscosifier) in drilling muds, helping mitigate loss circulation and maintain suspension stability. It is also utilized as a set retarder in cementing systems, enhancing the performance and reliability of oil and gas well operations.
Hydraulic Fracturing: In hydraulic fracturing fluids, welan gum contributes to viscosity control and suspension stability, facilitating the efficient extraction of hydrocarbons from underground reservoirs.
Cement Manufacturing: Welan gum is employed as a cement or concrete viscosifier, enhancing the workability and performance of cementing grouts. It aids in preventing fluid loss and maintaining the integrity of cement slurries during construction and wellbore completion.

96949-22-3 Relevant articles

Rheological properties of grouts with viscosity modifying agents as diutan gum and welan gum incorporating pulverised fly ash

Mohammed Sonebi

, Cement and Concrete Research Volume 36, Issue 9, September 2006, Pages 1609-1618

Similar mixes made with welan gum were compared to those containing diutan gums. The effect of admixtures on fluidity and rheological parameters are discussed in this paper. The effect of the replacement of cement by pulverised fly ash (PFA) was also investigated. Grouts with replacements of PFA of 5, 13 and 20% by mass were used with the same W/B. Similar control grouts and mixes incorporated different dosages of PFA made with welan gum were made in order to compare the fluidity and the rheological parameters to the previous grouts made with diutan gum.

Rheological Properties of Welan Gum in Aqueous Media

Masakuni Tako, Masahiro Kiriaki

, Agricultural and Biological Chemistry, Volume 54, Issue 12, 1 December 1990, Pages 3079–3084

The flow behavior and dynamic viscoelasticity of welan gum solutions were measured with a rheogoniometer. The welan gum showed shear-thinning behavior at a concentration of 0.1%, but plastic behavior above 0.3% at 25°C. The dynamic viscoelasticity increased with increasing concentration, and was scarcely changeable with increasing temperature even at 80°C.