METHOD OF INCREASING time between maintenance of downhole pumping equipment Mining WELL COMPLICATED scaling

摘要

FIELD: oil-and-gas production.;SUBSTANCE: according to method of bottom hole pumping equipment overhaul period increase in the production well complicated with scaling periodically perform preliminary cleaning out of oil film and asphalt resin paraffin of the mentioned above equipment - pumping of organic solvent into well, then removal of iron saline disposals from the equipment surface - pumping composition with % content: chlorohydric acid or acetic acid 25, corrosion inhibitor 18, scaling inhibitor 17, water 40, in to stopped well tubing annulus, overflush into pump and withstand it 1.5-2.0 hours, that mention above composition used in volume of 5.0-5.5% to well liquid volume from dynamic level to pump intake.;EFFECT: production well pumping equipment overhaul period increase.;1 ex