Gravel Pack With Words

A ball is dropped and string is pressured up to set the packer

Pressure up on string, so that piston pushes down on the packer. At the same time pull on the string so that the combined piston force and pulling force will release MPW tool from upper packer Pick up MPW tool several feet so that crossover port is exposed to the annulus

Pressure up on string to shear ball seat on MPW tool.

Then slack off on MPW tool so that it goes back to Squeeze/Circulate position

Pump sand. Sand goes through the tubing and gets diverted by the crossover port to the annulus in between the casing and screens

When the Sand/water slurry is being pumped down, the sand is prevented from entering the wash pipe (because its being filtered by the screen) But clean water can get through the screens and returns to the annulus through the wash pipe Wash pipe

Red arrow = Sand Slurry Blue arrow = “Clean Brine”

When the MPW tool is being pulled from the Gravel pack assembly, the shifting tool (grey in colour) will grab the closing sleeve (red) to close up the “Closing Sleeve”

Can you see the shifting tool has grabbed the closing sleeve to shift it close

The closing sleeve has to be closed so that sand does not enter the inside of the GP assembly through the Closing sleeve port.