Welan gum

　　In the oil industry, welan gum has excellent alkali resistance, high temperature characteristics of the oil drilling industry in the complex geological environment for the application of high-quality drilling fluid and completion fluid to provide a guarantee.

　　In oil well cement, welan gum can increase the suspension stability of cement slurry without adding any dispersant, and control the water loss of mud, so as to achieve the effect of stabilizing the shaft lining. It is superior to other cellulosic products in terms of temperature resistance above 150 ° C.

　　In dry-mixed mortar, welan gum as an additive to improve viscosity, used to keep the cement part of the free water and improve its mobility. It is combined with superplasticizer to produce a highly mobile and stable system with a very low yield value and the appropriate viscosity, has good effect for the preparation of underwater concrete, post-tensioned grouting and self-consolidation of concrete .

　　In the self-compacting concrete, the rational use of welan gum can improve the ability of concrete mix and resistance to separation. It can significantly increase the viscosity of aqueous solution to solve the high mobility, high expansion of the new concrete deformation capacity and resistance to segregation of contradictions, to improve the self-compacting concrete stability, filling. Welan gum can improve the slump of concrete while maintain a very low bleeding.

　　Performance and reliability of E-bio Welan gum have excellent performance in textile printing and dyeing, fire pharmaceuticals, ink printing, cleaning agents, coating agents, ceramics, microcapsules and non-fluorine-based protein and many other industries . Our technical staff has been researching its wide application value.

　　Anti-high temperature biopolymers:

　　It is a product with low price, low consumption, good temperature resistance, and it can be used more than 3,000 meters vertical from the deep well drilling and completion;

　　Anti-high temperature biopolymer has shear dilution property ,so it can be used for oil recovery in oil displacement and profile control water shutoff;

　　With good temperature resistance, good salt tolerance Anti-high temperature biopolymer can be used for formation pressure system, naked eye segment length, wall stability conditions are complex, high temperature, high pressure, deep formation rock drillability poor ultra-deep well drilling;

　　Many oil fields have poor geological conditions, mostly are to high temperature and high salinity reservoirs, and polyacrylamide can not work under this condition. The temperature and salt resistance of the biopolymer can be used for ASP flooding.

　　Anti-high temperature biopolymer has high viscosity, good thermal stability, sand carrying performance. It can be directly used for fracturing fluid without other cross-linking agent . It is easy to operate and reduce costs.