FIELD: oil-and-gas production.
SUBSTANCE: group of inventions related to wells boring and production, particularly to method and equipment of reservoir opening with jetting action of the bottomhole formation zone (BHFZ) and creation of caverns, can be use for different type of wells construction and maintenance. The method includes descending a perforating tool into well on a tubing string (TS), creating an least of a one slot in the string and jetting action of bottomhole formation zone (BHFZ) with creation of caverns by generation of overburden pressure in the perforation tool and supply with hydraulic fracturing fluid at least through one of jet nozzles of the perforation tool, with a jet pointed to the created slot. At the beginning of slot creation jet nozzle shuted down, in order to avoid fracturing fluid circulation through it. Its openes after slot creation process has started, determined by moment of perforation toll cutting unit penetration through column, or just after column opening, determined by moment perforation toll cutting unit displacement at distance long enough to pass through string wall. Then when slot has already created, increase pressure in TS in order to create jet effect at the fracturing fluid outflow from jet nozzle and execute jet treatment of (BHFZ) and cavern creation. After jet action completion decrease pressure in TS, stop fluid supply through jet nozzles by shutting it down, lift up perforation tool or move it to the new perforation interval. If necessary the method repeated at one or several perforation intervals without additional actions of perforation tool descending and lifting up.
EFFECT: process characteristics improvement, quality column opening increase, load decrease on pumps, jet nozzles, and perforation tool in total, its operational period increase.
7 cl, 4 dwg
