Rotary pump stabilizer

Details Rotary pump stabilizer Rotary pump stabilizer

E - Fixed Constructions

21

B

E21B 17/10 (2006.01) E21B 43/12 (2006.01)

Patent

CA 2292867

Apparatus is provided for stabilizing a rotary or progressive cavity pump suspended from production tubing. The stabilizing apparatus is connected to the pump and comprises a tubular body having a contiguous wall, a longitudinal bore contiguous with the production tubing and a sliding dog disposed in a longitudinal pocket formed in the exterior of the tubular body. One or more longitudinal piston bores are formed within the cylindrical wall and each contains a longitudinally movable piston. Each piston extends into the pocket and pivotally connects to the sliding dog. The piston bore is connected to the longitudinal bore. In operation, fluid pressure drives the pistons, actuating the sliding dog and driving the dog radially outwards to brace against the casing, the radial force produced being proportional with the fluid pressure. Under de-pressurized conditions, upward drag on the sliding dog compresses the pistons, retracting the dog, and permits removal of the tool and pump.

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