FIELD: mining.
SUBSTANCE: group of inventions relates to a method of processing several intervals of a productive stratum in a single triggering operation, devices for realizing the method. Method of processing several intervals of a productive stratum in one lowering-lifting operation involves lowering into the well of a device containing a hydraulic fracturing port, through packers, an anchor and a perforator. Device is tied to depth of specified interval of productive formation; further, access of working fluid to inner cavity of device under lower through packer, supply of working fluid into tubing string. Between activation packers, inter-packer annular space is separated. Rotary perforator is brought into working position and perforated casing string is perforated. Working fluid pressure is reduced, feed packers are deactivated and the device is lowered to the position whereat the perforated interval of the productive formation is located between the flow packers and the device is fixed in the well. Liquid access is blocked into the inner cavity of the device under the lower through packer, hydraulic fracturing fluid is supplied under pressure, hermetically isolating the inter-packer space, and hydraulic fracturing is performed. Device is transferred into the transport position and lifted to the next interval of the productive stratum to be treated.
EFFECT: technical result is provision of tight insulation of each perforation interval.
20 cl, 21 dwg
