ACID TREATMENT METHOD OF BOTTOM-HOLE OIL FORMATION ZONE

摘要

FIELD: oil and gas industry. ^ SUBSTANCE: acid treatment method of bottom-hole oil formation zone involves pumping of diverter -hydrocarbon gel prepared using Khimeko-N gel shaper, Khimeko-N activating agent and diesel fuel and further treatment at least of one low-permeable zone of formation with chlorhydric acid with concentration of 12% to 24%; at that, chlorhydric acid is used with decreasing concentration and volumes at repeated treatment operations. ^ EFFECT: coverage of oil formation with acid throughout the depth and height due to slowdown of acid reaction speed in treatment zone and reduction of due dates if further development of the well at minimum use of diverter with function of acid reaction speed retarder in conditions of oil formation with carbonate rock. ^ 2 cl, 5 tbl, 2 ex, 1 dwg