Patent ID: 8622135

Claim:
Well equipment, comprising: a return pipeline connecting a well head to a gas separator on top of a sand separator box; a transfer pipeline connecting the sand separator box to one or more frac tanks; a first pump pipeline connecting one or more of the frac tanks to a reverse pump; a second pump pipeline connecting the sand separator box to the reverse pump; and a reverse pipeline connecting the reverse pump to the well head; with the sand separator box including: a tank; a filter fixed in place in the tank and dividing the tank into an upper compartment and a lower compartment, with the filter adapted to allow water to pass from the upper compartment into the lower compartment, while filtering out sand in the water and keeping the sand in the upper compartment; the gas separator having one or more outlets above the upper compartment of the tank; with the second pump pipeline and the transfer pipeline both connected to the lower compartment of the tank.