METHOD FOR DEVELOPMENT OF OIL PRODUCING WELL AND DEVICE THEREFOR Russian patent published in 2017 - IPC E21B43/27 C02F1/66 

FIELD: oil industry.

SUBSTANCE: group of inventions relates to oil industry, in particular, to methods for development of oil producing wells and device for realising said methods. Method for development of oil well includes steps of: acid treatment of bottom-hole zone, on which acid solution is pumped into bottom-hole zone, holding for period of time of reaction of acid solution with rock of bottom-hole zone; bringing well to operation conditions, on which shank is lowered into bottom-hole zone, wherein shank loaded with granules of magnesium metal, pump equipment is lowered into well, pumping equipment switched to operation conditions, fluid is extracted from well, wherein fluid extracted from well by means of pumping equipment, when passing through shank is brought into contact with granules of magnesium metal, loaded into shank, pumped fluid is directed towards exhaust line. Device for neutralising acid comprises shank, connected to tubing string (TS), wherein shank has a housing, an inner cavity, in which are loaded granules of magnesium metal, and holes for extraction of fluid medium, made in housing of shank, wherein cavity of shank is linked with hole of tubing string.

EFFECT: technical result is reduction of corrosion of downhole equipment, shorter duration of well development, lower power and labour costs for transportation, processing and recovery of acid.

20 cl, 2 dwg