SUBSURFACE PUMPING INSTALLATION FOR HANDLING VISCOUS OR SAND-LADEN FLUIDS

摘要

SUBSURFACE PUMPING INSTALLATION FOR HANDLING VISCOUS OR SAND-LADEN FLUIDS A subsurface pumping installation in which solvent or diluent is introduced to the well from the surface and blends with the well fluid to enable it to be pumped more readily. The diluent is introduced through a power tubing which may be either concentric with the casing or concentric with a production tubing within the casing. A mixture of well fluid and diluent is conducted to the surface through an annulus which surrounds the power tubing. The diluent is injected into the well fluid in a blending chamber inside the pump, where it blends effectively without loss into the formation around the pump.