Enclosed circulation tool for a well

Details Enclosed circulation tool for a well Enclosed circulation tool for a well

2011-07-12

2011-07-12

Gay, Jennifer H (Department: 3676)

Wells

Processes

Cleaning or unloading well

C166S177700, C166S068000, C166S105000, C166S167000

Reexamination Certificate

active

07975765

ABSTRACT:
An enclosed circulation tool for a well including a tubular body having a top end, a bottom end and an interior cavity. A progressive cavity pump positioned at the bottom end of the body, the pump having a rotor mounted within a stator. The rotor has an upper end and a lower end, with the upper end extending into the interior cavity. A drive is coupled to and adapted to rotate the rotor in order to draw sand into the interior cavity. A first fluid passage is provided along which fluids from pumped from surface pass to fluidize solids within the interior cavity. A second fluid passage is provided along which fluidized solids from within the interior cavity pass to surface.

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