PUMPING SYSTEM WITH HIGH DISCHARGE POSITIVE DISPLACEMENT PUMP

• Main Authors: CHOLET, HENRI, BOURDON, JEAN-CLAUDE
• Format: Patent
• Language: English; French
• Published: 14.12.2004
• Edition: 5
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

La présente invention concerne un système de pompage d'un effluent produit p ar une formation géologique, dans lequel une pompe rotative est entraînée par des tiges mises en rotation à partir de la surface. Les tiges permettent l'injection d'un fluid e de lubrification et éventuellement de refroidissement dans des moyens mécaniques coopérants avec les tiges, le rotor et le stator de ladite pompe. Les moyens mécaniques peuvent comporter un multiplicateur de la vitesse de rotation du rotor par rapport à la vitesse d e rotation des tiges. Le fluide injecté peut également diminuer la viscosité de l'effluent refoulé par la pompe. Well pumping system has a pump comprising a stator (17), a rotor (20) and rods (12) which connect the pump to the surface and which are rotated by a surface drive for driving the rotor. The novelty is that the pump includes a maintenance and transmission mechanism (13), which cooperates with the rods, rotor and stator, and that the rods (12) allow injection from the surface of a fluid which circulates through the mechanism (13). ADVANTAGE - The design allows injection from the surface of a lubricant which circulates through the rotor mounting, allows incorporation of a speed multiplier to achieve high pump output with reasonable rod rotational speed and allows mixing of the injected fluid with the well product to improve pumping yield.