Armovis EHS-W is based on the Armovis EHS viscoelastic surfactant but modified to have a much lower pour-point to facilitate the use of the material in cold climate regions. Providing unsurpassed viscosification of sand, gravel or depleted acid to temperatures up to 350°F (180°C), this product can be used as an effective viscosifying or diverting agent in oilfield stimulation applications.