DOWNHOLE GRAVITATION FILTER GFD
GFD is designed to ensure ESP protection from a wide range of particle sizes, including proppant.
Filter is placed at motor base and is comprised of the following units:
storage container for solids
slotted (wire-wrapped) screen
Sand handling process involves 3 main stages:
1. centrifugal separation
2. separation under the actions of gravitation and inertia forces
3. finally, solids are retained by the slotted screen.