Welan gum is a fermentation-derived hydrocolloid produced by the microorganism Alcaligenes sp. Biopolymer WG-S from Oceanivewchem is recommended for use as a viscosity modifier in oilfield operations, such as hydraulic fracturing, wellbore cleanup, drilling, workover and completion fluids, as well as construction and concrete applications. Biopolymer WG-S provides high performance reliability.
In oilfield applications, WG-S demonstrates unique rheological characteristics to provide optimum wellbore cleanup and suspension. It delivers high viscosity at low concentrations. The unique high viscosity of WG at low shear rate enhances the suspension properties of low-concentration colloid and bentonite-free fluid formulations. Meanwhile its highly pseudoplastic properties results in oil drilling fluids that have good flowability at high shear rate which can help in significantly reducing transportation costs.
In cement applications, WG-S is excellent in facilitating the flow of sand and aggregator in self-levelling and seepage systems. It reduces the precipitation and separation of sand and ensures consistent strength throughout the cement system.
Our WG-S is stable under a wide range of temperatures and pH levels. It is compatible with most oil field additives as well as many make-up fluids such as fresh, sea and brackish waters, making it the hydrocolloid of choice.
Typical use levels of WG-S range from 0.05% to 1.0%.
