WELL SUCKER-ROD PUMP UNIT FOR PUMPING OUT HIGH VISCOUS FORMATION FLUIDS

摘要

SUMMARY OF THE INVENTION: in well annulus to tubing string is set rod pump. The plunger pump is coupled directly to a column of hollow rods. Between the rods and the pipe string is formed an annular channel for supplying a reactant. Normally closed bypass valve ustanovlzn the bottom of the rod string. At the top of the pipe string formed equalizing capillary opening for fluid communication with the annulus annular cavity. Column rods associated through further plunger mounted pair, which cylinder fastened to the wellhead fixture rod and integral with the machine-yl kachalkoy.1.