MULTI-STAGE TREATMENT DEVICE OF FORMATION Russian patent published in 2019 - IPC E21B43/263 E21B23/14 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to devices for thermogas-dynamic treatment of oil-gas-bearing formations by powder gases and can be used for intensification of oil and gas production caused by mechanical, thermal and physical-chemical impact on oil-and-gas bearing formations of solid fuel combustion products. Device includes powder charges installed in the housing, incandescent spirals electrically connected to logging cable, temperature and pressure sensors. Device is modular from separate sections, which bodies are connected to each other on the thread, on ends of each housing there are contacts connecting separate sections electrically, one of contacts in pair is spring-loaded and made movable in axial direction. In each working section, wires coming from contacts and incandescent spirals installed in upper and lower powder charges are connected through sealed lead-ins with controller located in sealed compartment, in which sensors of temperature and pressure are connected to controller. Body of the working section is perforated with holes; the sections are connected in the following sequence: from above a connecting section is installed, which is intended for connection of the device for multi-stage treatment of the formation with a geophysical cable; a working section is installed below it; in case of treatment of two or more formations through the remote sections additional working sections are installed. Number of remote and working sections is selected based on the condition of accurate installation of working sections opposite the treated formations. Guide conic shoe is attached to lower working section, on ribs of which there are rollers installed on axes, which facilitate lowering of assembled device into well.

EFFECT: technical result is improved functionality of the device.

6 cl, 9 dwg