Well screen with erosion protection walls

摘要: An erosion-resistant sand screen assembly is described for use in petroleum wells of the type which tends to become entrained stream entering wellbore. The especially useful cased holes formations consist very find sand, such as have been encountered Gulf Coast region United States and off east coast Trinidad. uses a sleeve with an wall at least one-fourth inch thick, positioned around outside layer wire screen. Preferably, has outer surface resilient elastomeric material.