What happens to gravel during squeezing in the crossover method?

What happens to gravel during squeezing in the crossover method?

• A. Gravel remains in the screen
• B. Gravel is dissolved by carrier fluid
• C. Gravel is pumped back to surface
• D. Gravel is placed in the perforation tunnels

Answer: (D)

In a gravel squeeze with the crossover method, the goal is to form a gravel pack in the perforation tunnels behind the screen. The crossover tool directs the gravel slurry through the tubing and into each perforation, so the gravel settles into the perforation tunnels. This places the protective gravel where it’s needed to stabilize the formation and control sand production. Therefore, the gravel is placed in the perforation tunnels, not left in the screen, not dissolved by the carrier fluid, and not pumped back to surface.

In a gravel squeeze with the crossover method, the goal is to form a gravel pack in the perforation tunnels behind the screen. The crossover tool directs the gravel slurry through the tubing and into each perforation, so the gravel settles into the perforation tunnels. This places the protective gravel where it’s needed to stabilize the formation and control sand production. Therefore, the gravel is placed in the perforation tunnels, not left in the screen, not dissolved by the carrier fluid, and not pumped back to surface.